CN117148383A

CN117148383A - Signal strength determining method, apparatus, computer device and storage medium

Info

Publication number: CN117148383A
Application number: CN202311063162.5A
Authority: CN
Inventors: 胡磊国
Original assignee: China Telecom Technology Innovation Center; China Telecom Corp Ltd
Current assignee: China Telecom Technology Innovation Center; China Telecom Corp Ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2023-12-01

Abstract

The application relates to a signal strength determining method, a signal strength determining device, computer equipment and a storage medium. The method comprises the following steps: the method comprises the steps of obtaining environmental parameters of a to-be-measured point at the current moment and ephemeris data of a satellite corresponding to the current moment, determining a shielding relation between the satellite and the to-be-measured point according to the environmental parameters and the ephemeris data, and determining the signal intensity of the to-be-measured point according to the shielding relation and attribute information of a shielding object. According to the application, based on the actual environmental parameters of the point to be measured and the ephemeris data of the satellite at the current moment, the shielding relation between the satellite and the point to be measured is determined, and then the signal intensity of the point to be measured is determined according to the shielding relation and the environmental parameters of the point to be measured.

Description

Signal strength determining method, apparatus, computer device and storage medium

Technical Field

The present application relates to the field of satellite navigation technologies, and in particular, to a method and apparatus for determining signal strength, a computer device, and a storage medium.

Background

The Beidou satellite navigation system consists of an air surface section, a ground section and a user section, and can provide high-precision and high-reliability positioning, navigation, time service and other services for various users all weather and all the time in the global scope. Along with the large-scale and industrialized development of the Beidou satellite navigation system, the analysis and evaluation of the signal intensity of the Beidou satellite navigation system at the user side gradually becomes a problem to be solved.

Currently, the existing signal strength determining method mainly comprises the following steps: the professional sets up big dipper positioning instruments on a plurality of test points positions of pre-layout to receive big dipper satellite navigation system's locating signal through big dipper positioning instruments and carry out the field measurement, thereby confirm big dipper satellite navigation system's signal strength at the user terminal according to the result that many times measurement obtained.

However, the above-described method of determining signal strength has a problem of inaccuracy in the face of a complicated geographical environment.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a signal strength determination method, apparatus, computer device, and storage medium that can improve the accuracy of signal strength in a complex geographical environment.

In a first aspect, the present application provides a method of determining signal strength. The method comprises the following steps:

Acquiring environmental parameters of a to-be-measured point at the current moment and ephemeris data of a satellite corresponding to the current moment; the environmental parameters comprise attribute information of the shielding object;

determining a shielding relation between the satellite and the point to be detected according to the environmental parameters and the ephemeris data; the shielding relation represents a state of whether the point to be detected is shielded or not;

and determining the signal intensity of the to-be-measured point according to the shielding relation and the attribute information of the shielding object.

In one embodiment, determining an occlusion relationship between a satellite and a point under test based on environmental parameters and ephemeris data comprises:

determining first angle information between the shielding object and the point to be detected in a geographic coordinate system and second angle information between the satellite and the point to be detected in the geographic coordinate system according to the attribute information and the ephemeris data of the shielding object;

determining whether the first angle information and the second angle information meet a preset shielding condition, and if so, determining that the point to be detected is in a shielded state; if not, determining that the point to be detected is in a non-shielded state.

In one embodiment, the first angle information includes a first angle between a position of a highest point of the shielding object and a horizon where a point to be detected is located, the second angle information includes a second angle between a position of a satellite and the horizon where the point to be detected is located, and determining whether the first angle information and the second angle information meet a preset shielding condition includes:

Determining whether the first angle is smaller than the second angle, and if so, determining that the first angle information and the second angle information meet a preset shielding condition; if the first angle information and the second angle information are not smaller than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a highest point of the obstruction, the ephemeris data includes position information of a satellite, determining first angle information between the obstruction and a point to be measured in a geographic coordinate system and second angle information between the satellite and the point to be measured in the geographic coordinate system according to the attribute information of the obstruction and the ephemeris data includes:

determining a first angle according to the position information of the highest point of the shielding object and the position coordinates of the point to be measured in a geographic coordinate system;

and determining a second angle according to the position information of the satellite and the position coordinates of the point to be measured in the geographic coordinate system.

In one embodiment, the first angle information further includes a third angle between the first surface of the shielding object and the north pole line where the point to be detected is located, the second angle information further includes a fourth angle between the position of the satellite and the north pole line where the point to be detected is located, and determining whether the first angle information and the second angle information meet a preset shielding condition includes:

Under the condition that the first angle is smaller than the second angle, determining whether the third angle is larger than the fourth angle, and if so, determining that the third angle information and the fourth angle information meet a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the third angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a first face of the obstruction, the ephemeris data includes position information of a satellite, determining first angle information between the obstruction and a point to be measured in a geographic coordinate system and second angle information between the satellite and the point to be measured in the geographic coordinate system according to the attribute information of the obstruction and the ephemeris data includes:

determining a third angle according to the position information of the first surface of the shielding object and the position coordinates of the to-be-measured point in the geographic coordinate system;

and determining a fourth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In one embodiment, the first angle information further includes a fifth angle between a second face of the shielding object and a north pole line where the point to be detected is located, the second angle information further includes a sixth angle between a position of the satellite and the north pole line where the point to be detected is located, and determining whether the first angle information and the second angle information meet a preset shielding condition includes:

Under the condition that the third angle is larger than the fourth angle, determining whether the fifth angle is larger than the sixth angle, and if so, determining that the first angle information and the second angle information meet the preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a second face of the obstruction, the ephemeris data includes position information of a satellite, determining first angle information between the obstruction and the point to be detected in the geographic coordinate system and second angle information between the satellite and the point to be detected in the geographic coordinate system according to the attribute information of the obstruction and the ephemeris data includes:

determining a fifth angle according to the position information of the second surface of the shielding object and the position coordinates of the to-be-measured point in the geographic coordinate system; the distance between the second face and the north pole line is greater than the distance between the second face and the north pole line;

and determining a sixth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In one embodiment, the attribute information includes a material of the shielding object, and determining the signal strength of the to-be-measured point according to the shielding relation and the attribute information of the shielding object includes:

Under the condition that the point to be detected is in a shielded state according to the shielding relation, determining whether the material of the shielding object is of a shielding type, if so, determining that the signal intensity of the point to be detected is a preset value; if not, determining the signal intensity of the to-be-measured point according to the signal intensity of the satellite transmission signal and a preset attenuation coefficient.

In one embodiment, determining the signal strength of the to-be-measured point according to the signal strength of the satellite transmission signal and the preset attenuation coefficient includes:

determining a preset attenuation coefficient according to the material of the shielding object;

and carrying out attenuation treatment on the signal intensity of the satellite transmitted signal according to a preset attenuation coefficient to obtain the signal intensity of the to-be-measured point.

In one embodiment, obtaining the environmental parameter of the point to be measured at the current time includes:

inputting the position information of the to-be-measured point into a preset shielding model for analysis to obtain the environmental parameters of the to-be-measured point; the preset shielding model is constructed in advance according to the corresponding relation between the environmental parameters and the position information of the plurality of to-be-measured points in the current environmental area.

In a second aspect, the application further provides a device for determining the signal intensity. The device comprises:

the acquisition module is used for acquiring the environmental parameters of the to-be-measured point at the current moment and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters comprise attribute information of the shielding object;

The first determining module is used for determining the shielding relation between the satellite and the point to be detected according to the environmental parameters and the ephemeris data; the shielding relation represents a state of whether the point to be detected is shielded or not;

and the second determining module is used for determining the signal intensity of the to-be-measured point according to the shielding relation and the attribute information of the shielding object.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:

The method, the device, the computer equipment and the storage medium for determining the signal intensity acquire the environmental parameters of the point to be measured at the current moment and the ephemeris data of the satellite corresponding to the current moment, determine the shielding relation between the satellite and the point to be measured according to the environmental parameters and the ephemeris data, and determine the signal intensity of the point to be measured according to the shielding relation and the attribute information of the shielding object. According to the method, based on the actual environment parameters of the to-be-measured point and the ephemeris data of the satellite at the current moment, the shielding relation between the satellite and the to-be-measured point is determined, and then the signal intensity of the to-be-measured point is determined according to the shielding relation and the environment parameters of the to-be-measured point, so that the determined signal intensity of the to-be-measured point not only depends on the environment parameters of the to-be-measured point, but also depends on the shielding relation between the satellite and the to-be-measured point.

Drawings

FIG. 1 is an application environment diagram of a method of determining signal strength in one embodiment;

FIG. 2 is a flow chart of a method for determining signal strength in one embodiment;

FIG. 3 is attribute information of surrounding occlusions of a point to be measured;

FIG. 4 is an environmental and texture map of surrounding occlusions of a point under test;

FIG. 5 is a view of the occlusion relationship of the occlusion at the point to be measured with the satellite;

FIG. 6 is a flow chart of a method for determining signal strength according to another embodiment;

FIG. 7 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 8 is a schematic diagram of the positional relationship among a satellite, an obstruction, and an object under test;

FIG. 9 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 10 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 11 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 12 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 13 is a flow chart of a method for determining signal strength in another embodiment;

FIG. 14 is a block diagram showing the construction of a signal strength determining apparatus in one embodiment;

FIG. 15 is a block diagram showing the construction of a signal strength determining apparatus in one embodiment;

Fig. 16 is a block diagram showing the configuration of a signal strength determining apparatus in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The Beidou satellite navigation system consists of an air surface section, a ground section and a user section, and can provide high-precision and high-reliability positioning, navigation, time service and other services for various users all weather and all the time in the global scope. The functions, performances and functions of the Beidou satellite navigation system are realized and benefit is exerted through the terminal supporting Beidou, so that the analysis and evaluation of the positioning performance and stability of the Beidou satellite navigation system at the user side are gradually the problems to be solved while the large-scale and industrialized development of the application of the Beidou satellite navigation system is accelerated.

At present, under a complex scene, performance test of the Beidou satellite navigation system is often carried out in a manual drive test mode, namely, a professional sets Beidou positioning instruments at a plurality of test point positions which are laid out in advance, and receives positioning signals of the Beidou satellite navigation system through the Beidou positioning instruments to carry out field measurement, so that the positioning performance and stability of the Beidou satellite navigation system at a user side are determined according to a result obtained by multiple measurements. However, as the test area is continuously enlarged, the manpower cost and equipment cost of the artificial road test are continuously increased, and in the actual process, satellite signals can be affected by many factors (such as distance, topography and buildings, for example) in the air, and meanwhile, the relative positions of the road test ground and the satellites can be periodically changed along with the change of time, so that the inaccurate determination method of the signal strength is caused when facing to a complex geographical environment. This patent aims to solve this problem.

After the background technology of the method for determining signal strength provided by the embodiment of the present application is described, an implementation environment related to the method for determining signal strength provided by the embodiment of the present application will be briefly described below. The method for determining the signal strength provided by the embodiment of the application can be applied to the computer equipment shown in fig. 1. The computer device may be a global satellite navigation system (Global Navigation Satellite System, GNSS) device or a terminal. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of determining signal strength. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the architecture shown in fig. 1 is merely a block diagram of some of the architecture associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements are applied, and that a particular terminal may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

After the application scenario of the signal strength determination method provided by the embodiment of the present application is described, the signal strength determination method described in the present application is mainly described below.

In one embodiment, as shown in fig. 2, a method for determining signal strength is provided, and the method is applied to the computer device in fig. 1 for illustration, and includes the following steps:

s201, acquiring environmental parameters of a to-be-measured point at the current moment and ephemeris data of a satellite corresponding to the current moment.

The environment parameters comprise attribute information of the shielding object, wherein the attribute information of the shielding object comprises height information of the shielding object, position information of the highest point of the shielding object, material information of the shielding object, occupied area information of the shielding object, position information of each surface of the shielding object and the like.

The ephemeris data of the satellite comprises longitude information of the satellite, latitude information of the satellite and altitude information of an orbit in which the satellite is located.

In the embodiment of the application, before the signal intensity of the Beidou satellite at the current moment at the to-be-measured point is determined, the environmental parameters of the to-be-measured point at the current moment can be obtained through actual measurement of the acquisition equipment, and ephemeris data of a plurality of satellites capable of positioning the to-be-measured point at the current moment are obtained from the Beidou satellite navigation system. Optionally, the attribute information of the shielding object around the to-be-measured point at the current moment can be obtained through actual measurement of a radar or camera device, the attribute information of the shielding object comprises the height information of the shielding object, the position information of the highest point of the shielding object, the material information of the shielding object, the occupied area information of the shielding object, the position information of each surface of the shielding object and the like, and longitude information of a plurality of satellites capable of positioning the to-be-measured point at the current moment, latitude information of the satellites and the height information of the orbit of the satellites can be obtained from the Beidou satellite navigation system. For example, as shown in fig. 3, attribute information of a surrounding obstruction of the point to be measured.

For example, the process of obtaining the environmental parameter of the point to be measured at the current time may include: the acquisition equipment (for example, radar) with the satellite positioning function firstly acquires longitude information, latitude information and altitude information of a to-be-measured point, then acquires height information, position information, material information, occupied area information, position information of shields such as surrounding buildings, trees or hillsides and the like of the to-be-measured point once every other preset angle (for example, 10 degrees), and then generates an environmental map around the to-be-measured point with the to-be-measured point as a center according to the acquired height information, position information, occupied area information and position information of the shields such as the surrounding buildings, the trees or the hillsides and the like of the to-be-measured point at all angles, and simultaneously generates a material map around the to-be-measured point with the to-be-measured point as a center according to the material information of the shields around the to-be-measured point. For example, as shown in fig. 4, an integrated graph of an environmental graph and a texture graph is shown at 15 ° intervals around a test point.

Optionally, in practical application, the process of acquiring the environmental parameters of the plurality of to-be-measured points on the to-be-selected path, that is, recording the environmental parameters of the plurality of to-be-measured points on the to-be-selected path, may include: the acquisition equipment (such as a radar) with the satellite positioning function is pushed to move along a target path, and environmental parameters of each to-be-measured point are acquired at intervals of preset distances (such as 10 meters, 50 meters and the like) in the moving process, so that an environmental map and a material map of each to-be-measured point on the target path are formed.

S202, determining the shielding relation between the satellite and the point to be detected according to the environmental parameters and the ephemeris data.

The shielding relation represents a state of whether the to-be-detected point is shielded or not.

In the embodiment of the application, after the environmental parameters of the point to be detected at the current moment and the ephemeris data of the satellite corresponding to the current moment are obtained, whether each satellite and the point to be detected are blocked by the blocking object can be determined according to whether the environmental parameters and the ephemeris data meet the preset conditions. Optionally, determining the shielding relation between each satellite and the point to be detected according to the height of the shielding object in the environmental parameter, the orbit height of each satellite, the longitude and latitude information of the shielding object and the longitude and latitude information of each satellite; for example, if the included angle between the satellite and the highest point of the shielding object is far smaller than the included angle between the highest point of the shielding object and the point to be detected on the horizon, and the ratio of the horizontal distance between the highest point of the shielding object and the satellite to the horizontal distance between the satellite and the point to be detected is far smaller than the ratio of the vertical distance between the highest point of the shielding object and the satellite to the vertical distance between the satellite and the point to be detected, the satellite and the point to be detected are determined to be completely blocked by the obstacle. For example, fig. 5 shows the occlusion relationship between an occlusion object and a satellite at a point to be detected.

S203, determining the signal intensity of the to-be-measured point according to the shielding relation and the attribute information of the shielding object.

The attribute information of the shade is material information of the shade, such as cement buildings, glass buildings, hillsides, trees and the like.

In the embodiment of the application, after the shielding relation between the satellite and the to-be-detected point and the attribute information of the shielding object are determined, whether the shielding object completely shields the signal of the satellite or not is determined according to the shielding relation and the attribute information of the shielding object, and the signal intensity of the satellite at the to-be-detected point is determined according to the shielding result of the shielding object. For example, if the above-mentioned shielding relation determined in step S202 is that the first satellite is completely blocked by the shielding object and the attribute information of the shielding object is determined to be a cement building, then it is determined that the shielding object completely shields the signal of the first satellite, so as to determine that the signal intensity of the first satellite at the point to be measured is a first value, and if the above-mentioned shielding relation determined in step S202 is that the second satellite is completely blocked by the shielding object and the attribute information of the shielding object is determined to be a tree, then it is determined that the shielding object does not completely shield the signal of the satellite, so as to determine that the signal intensity of the satellite at the point to be measured is a second value.

According to the method for determining the signal intensity, provided by the embodiment of the application, the environmental parameters of the to-be-measured point at the current moment and the ephemeris data of the satellite corresponding to the current moment are obtained, the shielding relation between the satellite and the to-be-measured point is determined according to the environmental parameters and the ephemeris data, and the signal intensity of the to-be-measured point is determined according to the shielding relation and the attribute information of the shielding object. According to the method, based on the actual environment parameters of the to-be-measured point and the ephemeris data of the satellite at the current moment, the shielding relation between the satellite and the to-be-measured point is determined, and then the signal intensity of the to-be-measured point is determined according to the shielding relation and the environment parameters of the to-be-measured point, so that the determined signal intensity of the to-be-measured point not only depends on the environment parameters of the to-be-measured point, but also depends on the shielding relation between the satellite and the to-be-measured point.

Optionally, the computer device may collect environmental parameters of each to-be-measured point on the target path in advance, form an environmental model based on the environmental parameters of each to-be-measured point, and simulate the signal intensity sent by the satellite received by each to-be-measured point on the target path based on the environmental model to obtain the signal intensity of each to-be-measured point on the target path.

In one embodiment, a process of determining an occlusion relationship between a satellite and a point to be measured according to environmental parameters and ephemeris data may be described based on the embodiment shown in fig. 2, as shown in fig. 6, S202 "determining an occlusion relationship between a satellite and a point to be measured according to environmental parameters and ephemeris data" includes:

s301, determining first angle information between the obstruction and the point to be detected in the geographic coordinate system and second angle information between the satellite and the point to be detected in the geographic coordinate system according to attribute information and ephemeris data of the obstruction.

In the embodiment of the application, after the attribute information of the shielding object and the ephemeris data of the current moment are obtained, the first angle information between the shielding object and the point to be measured in the geographic coordinate system can be determined according to the attribute information of the shielding object and the position information of the point to be measured, and the second angle information between the satellite and the point to be measured in the geographic coordinate system can be determined according to the ephemeris data of the satellite and the position information of the point to be measured.

S302, determining whether the first angle information and the second angle information meet a preset shielding condition.

And S303, if the detection result is met, determining that the point to be detected is in a blocked state.

And S304, if the detection result is not met, determining that the point to be detected is in a non-shielded state.

In the embodiment of the application, after the first angle information and the second angle information are determined, whether the first angle information and the second angle information meet the preset shielding condition is determined, if the first angle information and the second angle information meet the preset shielding condition, the to-be-measured point is determined to be in a shielded state, and if the first angle information and the second angle information do not meet the preset shielding condition, the to-be-measured point is determined to be in a violation shielding state. For example, if the first angle information is greater than the second angle information, the preset shielding condition is satisfied, at this time, the point to be measured is considered to be in a shielded state, and if the first angle information is not greater than the second angle information, the preset shielding condition is not satisfied, at this time, the point to be measured is considered to be in a non-shielded state.

Optionally, three types of information are provided below, wherein according to attribute information and ephemeris data of the shielding object, first angle information between the shielding object and a point to be detected in a geographic coordinate system is determined, second angle information between the satellite and the point to be detected in the geographic coordinate system is determined, whether the first angle information and the second angle information meet preset shielding conditions or not is determined, and if the first angle information and the second angle information meet preset shielding conditions, the point to be detected is determined to be in a shielded state; if not, determining that the point to be detected is in a non-shielded state by the method:

As shown in fig. 7, if the attribute information includes position information of a highest point of the obstruction, the ephemeris data includes position information of a satellite, and if the first angle information includes a first angle between a position of the highest point of the obstruction and a horizon where a point to be measured is located, the second angle information includes a second angle between the position of the satellite and the horizon where the point to be measured is located, S301 "determine, according to the attribute information of the obstruction and the ephemeris data, the first angle information between the obstruction and the point to be measured in a geographic coordinate system, and the second angle information between the satellite and the point to be measured in the geographic coordinate system", including:

s401, determining a first angle according to the position information of the highest point of the shielding object and the position coordinates of the point to be measured in the geographic coordinate system.

The position information of the highest point of the shielding object comprises position coordinates of the highest point of the shielding object and the height of the highest point of the shielding object.

In the embodiment of the application, after the position information of the highest point of the shielding object and the position coordinate of the point to be measured in the geographic coordinate system are obtained, the position coordinate of the highest point of the shielding object and the included angle between the connecting line of the position coordinate of the point to be measured in the geographic coordinate system and the horizon line can be determined as the first angle. As shown in fig. 8, A1 is a first angle.

S402, determining a second angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In the embodiment of the application, after the position information of the satellite and the position coordinate of the point to be measured in the geographic coordinate system are obtained, the included angle between the connecting line of the position coordinate of the satellite and the position coordinate of the point to be measured in the geographic coordinate system and the horizon is determined as the second angle. As shown in fig. 8, A2 is the second angle.

Further, S302 "determining whether the first angle information and the second angle information meet the preset shielding condition" includes:

s403, determining whether the first angle is smaller than the second angle.

S404, if the first angle information and the second angle information are smaller than the preset shielding conditions, the first angle information and the second angle information are determined to meet the preset shielding conditions.

And S405, if not smaller than the preset shielding condition is determined that the first angle information and the second angle information do not meet the preset shielding condition.

In the embodiment of the application, after the first angle and the second angle are determined, whether the first angle is smaller than the second angle is judged, if the first angle is smaller than the second angle, the first angle information and the second angle information are determined to meet the preset shielding condition, and if the first angle is not smaller than the second angle, the first angle information and the second angle information are determined to not meet the preset shielding condition. For example, as shown in fig. 8, if the first angle A1 is not smaller than the second angle A2, the first angle information and the second angle information do not satisfy the preset shielding condition, that is, the point to be measured is in a non-shielded state.

As shown in fig. 9, if the attribute information includes the position information of the first surface of the shielding object, the ephemeris data includes the position information of the satellite, and if the first angle information further includes the third angle between the first surface of the shielding object and the north line where the point to be measured is located, the second angle information further includes the fourth angle between the position of the satellite and the north line where the point to be measured is located, S301 "determine, according to the attribute information of the shielding object and the ephemeris data, the first angle information between the shielding object and the point to be measured in the geographic coordinate system, and the second angle information" between the satellite and the point to be measured in the geographic coordinate system, including:

s501, determining a third angle according to the position information of the first surface of the shielding object and the position coordinates of the point to be measured in the geographic coordinate system.

The position information of the first surface of the shielding object is a straight line of the surface of the shielding object closest to the north pole.

In the embodiment of the application, after the position information of the first surface of the shielding object and the position coordinate of the to-be-measured point in the geographic coordinate system are obtained, the included angle between the position information of the first surface of the shielding object and the north pole line where the position coordinate of the to-be-measured point in the geographic coordinate system is located can be determined as the third angle. As shown in fig. 8, A5 is a third angle.

S502, determining a fourth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In the embodiment of the application, after the position information of the satellite and the position coordinate of the point to be measured in the geographic coordinate system are obtained, the included angle between the connecting line of the position coordinate of the satellite and the position coordinate of the point to be measured in the geographic coordinate system and the north pole line can be determined as the fourth angle. As shown in fig. 8, A3 is a fourth angle.

s503, if the first angle is smaller than the second angle, determining whether the third angle is larger than the fourth angle.

S504, if the first angle information and the second angle information are larger than the preset shielding conditions, the first angle information and the second angle information are determined to meet the preset shielding conditions.

S505, if not, determining that the first angle information and the second angle information do not meet the preset shielding condition.

In the embodiment of the application, under the condition that the first angle is determined to be smaller than the second angle, determining a third angle and a fourth angle, judging whether the third angle is larger than the fourth angle, if the third angle is larger than the fourth angle, determining that the first angle information and the second angle information meet the preset shielding condition, and if the third angle is not larger than the second angle, determining that the first angle information and the second angle information do not meet the preset shielding condition. For example, as shown in fig. 8, if the third angle A5 is greater than the fourth angle A3, the first angle information and the second angle information satisfy the preset shielding condition, that is, the point to be measured is in a shielded state.

In an example three, as shown in fig. 10, if the attribute information includes the position information of the second surface of the shielding object, the ephemeris data includes the position information of the satellite, and if the first angle information further includes the fifth angle between the second surface of the shielding object and the north line where the point to be measured is located, the second angle information further includes the sixth angle between the position of the satellite and the north line where the point to be measured is located, then S301 "determine, according to the attribute information of the shielding object and the ephemeris data, the first angle information between the shielding object and the point to be measured in the geographic coordinate system, and the second angle information" between the satellite and the point to be measured in the geographic coordinate system, including:

s601, determining a fifth angle according to the position information of the second surface of the shielding object and the position coordinates of the point to be measured in the geographic coordinate system.

Wherein the distance between the second face and the north pole line is greater than the distance between the second face and the north pole line. The position information of the second surface of the shielding object is a straight line of the surface of the shielding object farthest from the north pole.

In the embodiment of the application, after the position information of the second surface of the shielding object and the position coordinate of the to-be-measured point in the geographic coordinate system are obtained, the included angle between the position information of the second surface of the shielding object and the horizon where the position coordinate of the to-be-measured point in the geographic coordinate system is located can be determined to be the fifth angle. As shown in fig. 8, A4 is a fifth angle.

S602, determining a sixth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In the embodiment of the application, after the position information of the satellite and the position coordinate of the point to be measured in the geographic coordinate system are obtained, the included angle between the connecting line of the position coordinate of the satellite and the position coordinate of the point to be measured in the geographic coordinate system and the north pole line can be determined as the fourth angle. As shown in fig. 8, A3 is a sixth angle.

s603, if the third angle is larger than the fourth angle, determining whether the fifth angle is larger than the sixth angle.

S604, if the first angle information and the second angle information are larger than the preset shielding condition, the first angle information and the second angle information are determined to meet the preset shielding condition.

And S605, if the first angle information and the second angle information are not larger than the preset shielding condition, determining that the first angle information and the second angle information do not meet the preset shielding condition.

In the embodiment of the application, under the condition that the third angle is determined to be larger than the fourth angle, determining a fifth angle and a sixth angle, judging whether the fifth angle is larger than the sixth angle, if the fifth angle is larger than the sixth angle, determining that the first angle information and the second angle information meet the preset shielding condition, and if the fifth angle is not larger than the sixth angle, determining that the first angle information and the second angle information do not meet the preset shielding condition. For example, as shown in fig. 8, if the fifth angle A4 is greater than the sixth angle A3, the first angle information and the second angle information satisfy the preset shielding condition, that is, the point to be measured is in a shielded state.

According to the method for determining the signal intensity, whether the point to be detected is shielded by the shielding object is determined based on the ephemeris data at the current moment and the environmental parameters of the shielding object at the point to be detected, so that a foundation is laid for determining the signal intensity of the point to be detected according to the shielding relation and the environmental parameters of the point to be detected, the determined signal intensity of the point to be detected is enabled to depend on the environmental parameters of the point to be detected and the shielding relation between satellites and the point to be detected, and compared with the existing signal intensity of the point to be detected determined under a static and open shielding-free scene, the method considers the actual environmental parameters around the point to be detected, and therefore accuracy of the signal intensity of the point to be detected is further improved.

In one embodiment, based on the embodiment shown in fig. 2 to 10, the attribute information includes a material of the shielding object, and a process of determining the signal strength of the to-be-measured point according to the shielding relation and the attribute information of the shielding object may be described, as shown in fig. 11, where the step of determining the signal strength of the to-be-measured point according to the shielding relation and the attribute information of the shielding object, S203 "includes:

s701, under the condition that the point to be detected is in the shielded state according to the shielding relation, determining whether the material of the shielding object is of a shielding type.

Wherein, the material of sheltering from the thing includes concrete material, glass material, hillside material and trees material etc..

In the embodiment of the application, under the condition that the point to be detected is in a shielded state according to the shielding relation, if the material of the shielding object is a concrete material and a hillside material, the material of the shielding object is a shielding type, and if the material of the shielding object is a glass material and a tree material, the material of the shielding object is not a shielding type, namely a semi-shielding type.

S702, if yes, determining the signal intensity of the to-be-measured point as a preset value.

In the embodiment of the application, if the point to be detected is determined to be in the shielded state according to the shielding relation, and the material of the shielding object is determined to be of the shielding type, the signal intensity of the point to be detected is determined to be a preset value. For example, when the point to be measured is in a blocked state and the material of the blocking object is determined to be of a shielding type, the signal intensity of the point to be measured is determined to be 0.

And S703, if not, determining the signal intensity of the to-be-measured point according to the signal intensity of the satellite transmission signal and a preset attenuation coefficient.

The preset attenuation coefficient may be specific attenuated signal intensity, or may be a number between 0 and 1.

In the embodiment of the application, if the point to be detected is determined to be in a shielded state according to the shielding relation and the material of the shielding object is determined not to be of a shielding type, the signal intensity of the point to be detected is determined according to the signal intensity of the satellite transmitted signal and the preset attenuation coefficient. Optionally, under the condition that the signal intensity of the acquired satellite transmission signal is 100PB and the preset attenuation coefficient is 20PB, determining that the signal intensity of the to-be-measured point is 80PB according to the difference between the signal intensity of the satellite transmission signal and the preset attenuation coefficient.

Optionally, a method for determining the signal strength of the to-be-measured point according to the signal strength of the satellite transmission signal and the preset attenuation coefficient is provided below, as shown in fig. 12, S703 "determining the signal strength of the to-be-measured point according to the signal strength of the satellite transmission signal and the preset attenuation coefficient", including:

s801, determining a preset attenuation coefficient according to the material of the shielding object.

Wherein, the material of sheltering from the thing is different, and preset attenuation coefficient is also different.

According to the embodiment of the application, the preset attenuation coefficient is determined according to the material of the shielding object. For example, if the material of the shielding object is a glass material, the preset attenuation coefficient determined according to the glass material is 10%; if the shielding material is a tree material, the preset attenuation coefficient determined according to the glass material is 5%.

S802, carrying out attenuation processing on the signal intensity of the satellite transmitted signal according to a preset attenuation coefficient to obtain the signal intensity of the to-be-measured point.

In the embodiment of the application, after the preset attenuation coefficient corresponding to the material of each shielding object is obtained, the signal intensity of the signal sent by each satellite can be attenuated according to the preset attenuation coefficient to obtain the signal intensity of each satellite at the point to be measured, and then the signal intensity of each satellite at the point to be measured is accumulated and calculated to obtain the signal intensity of the point to be measured. For example, if the preset attenuation coefficient is 10% and the signal strength of the signal sent by the satellite a is 100PB, the signal strength of the satellite a at the point to be measured is 90PB; the preset attenuation coefficient is 50%, the signal intensity of a signal sent by the satellite B is 50PB, the signal intensity of the satellite B at a point to be detected is 25PB, and the signal intensity of the satellite A at the point to be detected and the signal intensity of the satellite B at the point to be detected are accumulated and calculated to obtain the signal intensity of the satellite A at the point to be detected as 115PB.

According to the method for determining the signal intensity, the signal intensity of the shielding objects of different materials at the point to be detected is determined based on the shielding relation and the material of the shielding objects, so that the determined signal intensity of the point to be detected is not only dependent on the shielding relation of the point to be detected, but also dependent on the material of the shielding objects.

In one embodiment, a process of acquiring the environmental parameter of the point to be measured at the current time may be described based on the embodiment shown in fig. 2 to 12, where S201 "acquiring the environmental parameter of the point to be measured at the current time" includes:

and inputting the position information of the to-be-measured point into a preset shielding model for analysis to obtain the environmental parameters of the to-be-measured point.

The preset shielding model is constructed in advance according to the corresponding relation between the environmental parameters and the position information of the plurality of to-be-measured points in the current environmental area. The obtaining process of the preset shielding model may include: the process of obtaining the environmental parameters of the plurality of to-be-measured points in the current environmental area, that is, recording the environmental parameters of the plurality of to-be-measured points in the current environmental area, may include: the method comprises the steps of pushing acquisition equipment (such as a radar) with a satellite positioning function to move along a target path, acquiring environment parameters of each to-be-measured point at intervals of preset distances (such as 10 meters, 50 meters and the like) in the moving process, forming an environment map and a material map of each to-be-measured point in the current environment area, further synthesizing the environment parameters of the current environment area, and further obtaining the corresponding relation between the environment parameters of a plurality of to-be-measured points and the position information of the plurality of to-be-measured points in the current environment area.

In the embodiment of the application, the preset shielding models can be constructed in advance, and when the signal intensity of the to-be-measured point in each preset shielding model needs to be determined, the position information of the to-be-measured point is input into the preset shielding model for analysis, so that the environmental parameters of the to-be-measured point are obtained.

According to the method for determining the signal intensity, the preset shielding model is built in advance, the position information of the to-be-measured point is input into the preset shielding model, the environment parameters of the to-be-measured point can be obtained, when the signal intensity of the to-be-measured point is required to be determined, the environment parameters of the to-be-measured point are not required to be acquired in the field, and the environment parameters are directly acquired from the preset shielding model, so that the determining step of the signal intensity is simplified to a certain extent.

In one embodiment, as shown in fig. 13, there is further provided a complete method for determining signal strength, including:

s10, acquiring attribute information of a shielding object of a point to be detected at the current moment and ephemeris data of a satellite corresponding to the current moment;

s11, determining first angle information between the shielding object and a point to be detected in a geographic coordinate system and second angle information between the satellite and the point to be detected in the geographic coordinate system according to attribute information and ephemeris data of the shielding object;

S12, determining whether the first angle information and the second angle information meet a preset shielding condition;

s13, if the detection result is met, determining that the point to be detected is in a blocked state;

s14, if the detection result is not met, determining that the point to be detected is in a non-shielded state;

s15, under the condition that the point to be detected is in a shielded state according to the shielding relation, determining whether the material of the shielding object is of a shielding type or not;

s16, if yes, determining the signal intensity of the to-be-measured point as a preset value;

s17, if not, determining a preset attenuation coefficient according to the material of the shielding object;

and S18, carrying out attenuation treatment on the signal intensity of the satellite transmitted signal according to a preset attenuation coefficient to obtain the signal intensity of the to-be-measured point.

According to the method for determining the signal intensity, provided by the embodiment of the application, the environmental parameters of the to-be-measured point at the current moment and the ephemeris data of the satellite corresponding to the current moment are obtained, the shielding relation between the satellite and the to-be-measured point is determined according to the environmental parameters and the ephemeris data, and the signal intensity of the to-be-measured point is determined according to the shielding relation and the attribute information of the shielding object. According to the application, based on the actual environment parameters of the point to be measured and the ephemeris data of the satellite at the current moment, the shielding relation between the satellite and the point to be measured is determined, and then the signal intensity of the point to be measured is determined according to the shielding relation and the environment parameters of the point to be measured, so that the determined signal intensity of the point to be measured not only depends on the environment parameters of the point to be measured, but also depends on the shielding relation between the satellite and the point to be measured, and compared with the existing signal intensity of the point to be measured determined under static and open shielding-free scenes, the method considers the actual environment parameters around the point to be measured, thereby further improving the accuracy of the signal intensity of the point to be measured; in addition, the method can collect the environmental parameters of each to-be-measured point on the target path in advance, form an environmental model based on the environmental parameters of each to-be-measured point, and input the model and ephemeris data of satellites into global satellite navigation system (Global Navigation Satellite System, GNSS) equipment for simulation to obtain the signal intensity of each to-be-measured point on the target path, thereby solving the problem of incomplete coverage of the traditional static instrument simulation test scene.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a signal strength determining device for realizing the above related signal strength determining method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the device for determining signal strength or signal strengths provided below may be referred to the limitation of the method for determining signal strength hereinabove, and will not be repeated here.

In one embodiment, as shown in fig. 14, there is provided a signal strength determining apparatus, including: an acquisition module 10, a first determination module 11 and a second determination module 12, wherein:

the acquisition module 10 is used for acquiring environmental parameters of a to-be-measured point at the current moment and ephemeris data of a satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction.

The first determining module 11 is configured to determine a shielding relationship between the satellite and the point to be detected according to the environmental parameter and the ephemeris data; the occlusion relationship indicates a state of whether the point to be detected is occluded.

The second determining module 12 is configured to determine a signal strength of the to-be-measured point according to the occlusion relationship and attribute information of the occlusion object.

In one embodiment, as shown in fig. 15, the first determining module 11 includes a first determining unit 110 and a second determining unit 111, where,

the first determining unit 110 is specifically configured to determine, according to attribute information and ephemeris data of the obstruction, first angle information between the obstruction and a point to be detected in the geographic coordinate system, and second angle information between the satellite and the point to be detected in the geographic coordinate system;

the second determining unit 111 is specifically configured to determine whether the first angle information and the second angle information meet a preset shielding condition, and if so, determine that the point to be detected is in a shielded state; if not, determining that the point to be detected is in a non-shielded state.

In one embodiment, the first angle information includes a first angle between a position of a highest point of the shielding object and a horizon where a point to be detected is located, the second angle information includes a second angle between a position of a satellite and the horizon where the point to be detected is located, and the second determining unit 111 is specifically configured to determine whether the first angle is smaller than the second angle, and if so, determine that the first angle information and the second angle information meet a preset shielding condition; if the first angle information and the second angle information are not smaller than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a highest point of the obstruction, the ephemeris data includes position information of a satellite, and the first determining unit 110 is specifically configured to determine the first angle according to the position information of the highest point of the obstruction and a position coordinate of the point to be measured in the geographic coordinate system; and determining a second angle according to the position information of the satellite and the position coordinates of the point to be measured in the geographic coordinate system.

In one embodiment, the first angle information further includes a third angle between the first surface of the shielding object and the north line where the point to be detected is located, the second angle information further includes a fourth angle between the position of the satellite and the north line where the point to be detected is located, and the second determining unit 111 is specifically configured to determine, when determining that the first angle is smaller than the second angle, whether the third angle is greater than the fourth angle, and if so, determine that the first angle information and the second angle information satisfy a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a first surface of the obstruction, the ephemeris data includes position information of a satellite, and the first determining unit 110 is specifically configured to determine a third angle according to the position information of the first surface of the obstruction and a position coordinate of the point to be measured in the geographic coordinate system; and determining a fourth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In one embodiment, the first angle information further includes a fifth angle between the second surface of the shielding object and the north line where the point to be detected is located, the second angle information further includes a sixth angle between the position of the satellite and the north line where the point to be detected is located, and the second determining unit 111 is specifically configured to determine, when determining that the third angle is greater than the fourth angle, whether the fifth angle is greater than the sixth angle, and if so, determine that the first angle information and the second angle information satisfy a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

In one embodiment, the attribute information includes position information of a second surface of the obstruction, the ephemeris data includes position information of a satellite, and the first determining unit 110 is specifically configured to determine the fifth angle according to the position information of the second surface of the obstruction and a position coordinate of the point to be measured in the geographic coordinate system; the distance between the second face and the north pole line is greater than the distance between the second face and the north pole line; and determining a sixth angle according to the position information of the satellite and the position coordinates of the to-be-measured point in the geographic coordinate system.

In one embodiment, the attribute information includes a material of the shielding object, as shown in fig. 16, and the second determining module 12 includes a third determining unit 120, specifically configured to determine, when it is determined that the point to be measured is in the shielded state according to the shielding relationship, whether the material of the shielding object is a shielding type, and if so, determine that the signal strength of the point to be measured is a preset value; if not, determining the signal intensity of the to-be-measured point according to the signal intensity of the satellite transmission signal and a preset attenuation coefficient.

In one embodiment, the third determining unit 120 is specifically configured to determine a preset attenuation coefficient according to a material of the obstruction; and carrying out attenuation treatment on the signal intensity of the satellite transmitted signal according to a preset attenuation coefficient to obtain the signal intensity of the to-be-measured point.

In one embodiment, the acquiring module 10 includes: the analysis unit is specifically used for inputting the position information of the to-be-measured point into a preset shielding model for analysis to obtain the environmental parameters of the to-be-measured point; the preset shielding model is constructed in advance according to the corresponding relation between the environmental parameters and the position information of the plurality of to-be-measured points in the current environmental area.

The respective modules in the above-described signal strength determination means may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in FIG. 1. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of determining signal strength. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the architecture shown in fig. 1 is merely a block diagram of some of the architecture relevant to the present inventive arrangements and is not limiting as to the computer device to which the present inventive arrangements may be implemented, as a particular computer device may include more or less components than those shown, or may be combined with some components, or may have a different arrangement of components.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

In one embodiment, the processor when executing the computer program further performs the steps of:

under the condition that the first angle is smaller than the second angle, determining whether the third angle is larger than the fourth angle, and if so, determining that the first angle information and the second angle information meet a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

under the condition that the point to be detected is in a shielded state according to the shielding relation, determining whether the material of the shielding object is of a shielding type, if so, determining that the signal intensity of the point to be detected is a preset value;

if not, determining the signal intensity of the to-be-measured point according to the signal intensity of the satellite transmission signal and a preset attenuation coefficient.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor further performs the steps of:

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method of determining signal strength, the method comprising:

acquiring environmental parameters of a to-be-measured point at the current moment and ephemeris data of a satellite corresponding to the current moment; the environment parameters comprise attribute information of the shielding object;

2. The method of claim 1, wherein determining an occlusion relationship between the satellite and the point under test based on the environmental parameter and the ephemeris data comprises:

determining first angle information between the obstruction and the point to be detected in a geographic coordinate system and second angle information between the satellite and the point to be detected in the geographic coordinate system according to the attribute information of the obstruction and the ephemeris data;

3. The method of claim 2, wherein the first angle information includes a first angle between a highest point of the obstruction and a horizon at which the point to be measured is located, the second angle information includes a second angle between the satellite location and the horizon at which the point to be measured is located, and the determining whether the first angle information and the second angle information satisfy a preset obstruction condition includes:

4. A method according to claim 3, wherein the attribute information includes position information of a highest point of the obstruction, the ephemeris data includes position information of the satellite, the determining first angle information between the obstruction and the point under test in a geographic coordinate system and second angle information between the satellite and the point under test in the geographic coordinate system based on the attribute information of the obstruction and the ephemeris data includes:

determining the first angle according to the position information of the highest point of the shielding object and the position coordinates of the point to be detected in the geographic coordinate system;

and determining the second angle according to the position information of the satellite and the position coordinates of the point to be detected in the geographic coordinate system.

5. The method of claim 3, wherein the first angle information further includes a third angle between the first face of the obstruction and a north line where the point to be measured is located, the second angle information further includes a fourth angle between the position of the satellite and the north line where the point to be measured is located, and the determining whether the first angle information and the second angle information satisfy a preset obstruction condition includes:

Determining whether the third angle is larger than the fourth angle under the condition that the first angle is smaller than the second angle, and if so, determining that the third angle information and the fourth angle information meet a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the third angle information and the second angle information are determined to not meet the preset shielding condition.

6. The method of claim 5, wherein the attribute information includes position information of a first face of the obstruction, the ephemeris data includes position information of the satellite, the determining first angle information between the obstruction and the point under test in a geographic coordinate system and second angle information between the satellite and the point under test in the geographic coordinate system based on the attribute information of the obstruction and the ephemeris data includes:

determining the third angle according to the position information of the first surface of the shielding object and the position coordinates of the point to be detected in the geographic coordinate system;

and determining the fourth angle according to the position information of the satellite and the position coordinates of the point to be detected in the geographic coordinate system.

7. The method of claim 5, wherein the first angle information further includes a fifth angle between a second face of the obstruction and a north pole line where the point to be measured is located, the second angle information further includes a sixth angle between a position of the satellite and the north pole line where the point to be measured is located, and the determining whether the first angle information and the second angle information satisfy a preset obstruction condition includes:

determining whether the fifth angle is larger than the sixth angle under the condition that the third angle is larger than the fourth angle, and if so, determining that the first angle information and the second angle information meet a preset shielding condition; if the first angle information and the second angle information are not larger than the preset shielding condition, the first angle information and the second angle information are determined to not meet the preset shielding condition.

8. The method of claim 7, wherein the attribute information includes position information of a second side of the obstruction, the ephemeris data includes position information of the satellite, the determining first angle information between the obstruction and the point under test in a geographic coordinate system and second angle information between the satellite and the point under test in the geographic coordinate system based on the attribute information of the obstruction and the ephemeris data includes:

Determining the fifth angle according to the position information of the second surface of the shielding object and the position coordinates of the point to be detected in the geographic coordinate system; a distance between the second face and the north pole line is greater than a distance between the second face and the north pole line;

and determining the sixth angle according to the position information of the satellite and the position coordinates of the point to be detected in the geographic coordinate system.

9. The method according to any one of claims 1-8, wherein the attribute information includes a material of the obstruction, and the determining the signal strength of the to-be-measured point according to the obstruction relation and the attribute information of the obstruction includes:

determining whether the material of the shielding object is of a shielding type or not under the condition that the point to be detected is in a shielded state according to the shielding relation, and if so, determining that the signal intensity of the point to be detected is a preset value; if not, determining the signal intensity of the to-be-measured point according to the signal intensity of the satellite transmitting signal and a preset attenuation coefficient.

10. The method according to claim 9, wherein the determining the signal strength of the point to be measured according to the signal strength of the satellite transmission signal and a preset attenuation coefficient includes:

Determining the preset attenuation coefficient according to the material of the shielding object;

and carrying out attenuation treatment on the signal intensity of the satellite transmitted signal according to the preset attenuation coefficient to obtain the signal intensity of the point to be detected.

11. The method according to any one of claims 1-8, wherein the obtaining the environmental parameter of the point to be measured at the current time includes:

inputting the position information of the point to be measured into a preset shielding model for analysis to obtain the environmental parameters of the point to be measured; the preset shielding model is constructed in advance according to the corresponding relation between the environmental parameters and the position information of the plurality of to-be-measured points in the current environmental area.

12. A signal strength determining apparatus, the apparatus comprising:

the acquisition module is used for acquiring the environmental parameters of the to-be-measured point at the current moment and the ephemeris data of the satellite corresponding to the current moment; the environment parameters comprise attribute information of the shielding object;

the first determining module is used for determining the shielding relation between the satellite and the point to be detected according to the environmental parameter and the ephemeris data; the shielding relation represents a state of whether the point to be detected is shielded or not;

13. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 11 when the computer program is executed.

14. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 11.