CN115856942B - Virtual station-based foundation enhancement network type optimization method and storage medium - Google Patents
Virtual station-based foundation enhancement network type optimization method and storage medium Download PDFInfo
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- 238000012216 screening Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
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Abstract
The invention relates to the technical field of Beidou navigation foundation enhancement, in particular to a foundation enhancement network type optimization method based on a virtual station and a storage medium. The position of the reference station is adjusted by using a virtualization reference station technology, so that a high-quality resolving result is formed by resolving the foundation enhancement network, positioning service with a larger range, lower cost and higher precision is provided for regional high-precision foundation enhancement service, and the reliability, high efficiency, stability and safety of the Beidou comprehensive service platform operation are improved, so that the platform advantage is improved.
Description
Technical Field
The invention relates to the technical field of Beidou navigation foundation enhancement, in particular to a foundation enhancement network type optimization method based on a virtual station and a storage medium.
Background
After the Beidou satellite navigation system is built in a globalization way in three periods, the Beidou satellite navigation system is widely applied to various industries in China, beidou foundation enhancement service also provides guarantee for Beidou high-precision application, and by utilizing the Beidou foundation enhancement network, a terminal user can complete centimeter-level positioning. The Beidou system has independent intellectual property rights in China and can provide the capability of navigation, positioning, time service and short message for users.
The foundation enhancement system is a supplementary measure for lifting the Beidou satellite navigation system. By establishing a large number of networking continuous monitoring reference stations on the ground, a user can collect satellite observation data by using Beidou satellites and receive the data of the ground continuous monitoring reference stations, and centimeter-level relative positioning can be completed through a relative positioning technology.
However, with this relative positioning technique, the range of service users is limited due to the position of the reference station, and when the user is far from the reference station, the positioning accuracy is lowered. In order to solve the problem of traditional relative positioning, at present, a network real-time relative positioning technology is mostly adopted, a reference station network is formed by adopting a plurality of reference stations, satellite errors, troposphere errors and atmospheric errors of each reference station are calculated by carrying out adjustment calculation on the whole network, then interpolation is carried out nearby users, and continuously-operated reference stations are virtualized to provide differential observation data for the users, so that the coverage range of the provided service is improved.
By utilizing the network real-time relative positioning technology, a certain network type is formed by continuously monitoring the reference station to acquire high-quality virtual station data, and the network baseline distance of a frame is required to be between 100km and 200km in general, and the network reference station baseline distance in the network is required to be the optimal network type within 60 km. However, the construction of the reference station depends on geographical features, for example, in areas such as lake areas and unmanned areas, the reference station cannot be constructed, and therefore, the network type of the areas is poor, and parameters of virtual points cannot be calculated.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: a virtual station-based foundation enhancement network type optimization method and a storage medium are provided.
In order to solve the technical problems, the invention adopts a technical scheme that:
a foundation enhancement network type optimization method based on a virtual station comprises the following steps:
s1, acquiring site information data of a reference station in a foundation enhancement network;
s2, networking operation is carried out according to the site information data of the reference station, and a networking result is obtained;
s3, acquiring reference station site information data which does not meet requirements in a networking result;
s4, setting virtual station information data to adjust the position of the reference station information data acquired in the step S3, so that the networking result meets the requirement;
and S5, correcting original observation data in the reference station site information data associated with the virtual site information data in the networking result according to the virtual site information data in the step S4, so as to realize the foundation enhancement network type optimization.
The invention adopts another technical scheme that:
a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the method described above.
The invention has the beneficial effects that:
the method for setting the virtual station adjusts the non-ideal reference station in the foundation enhancement network to ensure that the foundation enhancement network type is optimal, and can save the construction cost of the reference station; in addition, the baseline distance can be reduced by moving the reference station for the sparse area in the network, so that the quality of data received by a user is improved.
Drawings
FIG. 1 is a flow chart of steps of a method for optimizing a foundation enhancement network based on a virtual station according to the present invention;
fig. 2 is a schematic diagram of the mesh type in the present embodiment.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, the method for optimizing the foundation enhancement network based on the virtual station provided by the invention comprises the following steps:
s1, acquiring site information data of a reference station in a foundation enhancement network;
s2, networking operation is carried out according to the site information data of the reference station, and a networking result is obtained;
s3, acquiring reference station site information data which does not meet requirements in a networking result;
s4, setting virtual station information data to adjust the position of the reference station information data acquired in the step S3, so that the networking result meets the requirement;
and S5, correcting original observation data in the reference station site information data associated with the virtual site information data in the networking result according to the virtual site information data in the step S4, so as to realize the foundation enhancement network type optimization.
From the above description, the beneficial effects of the invention are as follows:
the method for setting the virtual station adjusts the non-ideal reference station in the foundation enhancement network to ensure that the foundation enhancement network type is optimal, and can save the construction cost of the reference station; in addition, the baseline distance can be reduced by moving the reference station for the sparse area in the network, so that the quality of data received by a user is improved.
Further, the step S2 specifically includes:
networking operation is carried out on the site information data of the reference station by using a triangle networking method, so that a baseline distance after networking is obtained;
the step S3 specifically comprises the following steps:
and screening by combining the obtained baseline distance with a preset threshold, and screening out the reference station site information data which does not accord with the preset threshold.
Further, the step S2 specifically includes:
networking operation is carried out on the site information data of the reference station by using a triangle networking method, so as to obtain networking network data;
the step S4 specifically comprises the following steps:
and (3) calculating the virtual site information data of the optimal network type according to the network type data, judging whether the position difference between the virtual site information data of the optimal network type and the reference site information data which does not meet the requirement in the step (S3) meets a preset threshold, and if so, executing the step (S5).
Further, in step S4, virtual site information data of an optimal network type is obtained by calculation according to the network type data, specifically:
and taking the average center of the coordinates of more than four reference stations around the reference station as the virtual station information data of the optimal network according to the position of the reference station information data which does not meet the preset threshold requirement.
Further, the step S5 specifically includes:
and (3) correcting the original observed data in the reference station information data associated with the virtual station information data in the networking result according to the virtual station information data in the step (S4), and sending the corrected data to a differential calculation platform to calculate differential data.
Further, step S5 further includes: and correcting the antenna parameters.
The present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements a virtual station based ground enhancement net-type optimization method as described above.
Referring to fig. 1 and 2, a first embodiment of the invention is as follows:
as shown in fig. 1, the method for optimizing the foundation enhancement network type based on the virtual station provided by the invention can be applied to a Beidou foundation enhancement service system. The method specifically comprises the following steps:
s1, acquiring site information data of a reference station in a foundation enhancement network through an electric Beidou comprehensive service platform; the data includes geodetic coordinates of the station, the geodetic coordinates including longitude, latitude and altitude information of the reference station;
the station information of the reference station is acquired in a long-term adjustment or mapping calibration mode, and the station coordinates can be geodetic coordinates or other forms of coordinates which are converted into geodetic coordinates.
S2, networking operation is carried out according to the site information data of the reference station, and a networking result is obtained;
the step S2 specifically comprises the following steps:
networking operation is carried out on the site information data of the reference station by using a triangle networking method, so as to obtain a baseline distance and network data after networking;
that is, using the coordinates of all reference stations, a triangle is first constructed to contain all reference stations, then each point is judged separately, whether the point is inside or outside the triangle circumscribed circle is judged, if inside, three triangles are regenerated, and if outside, the triangle line is not changed.
And acquiring the information of each triangle of the triangle and the information of each side of the triangle, namely the baseline distance, after triangle networking.
S3, acquiring reference station site information data which does not meet requirements in a networking result;
the step S3 specifically comprises the following steps:
and screening by combining the obtained baseline distance with a preset threshold, and screening out the reference station site information data which does not accord with the preset threshold.
And judging each baseline distance according to a preset threshold, and screening out the reference stations exceeding the preset threshold for subsequent adjustment. The actual value of the preset threshold can be set according to actual requirements.
S4, setting virtual station information data to adjust the position of the reference station information data acquired in the step S3, so that the networking result meets the requirement;
the step S4 specifically comprises the following steps:
and (3) calculating the virtual site information data of the optimal network type according to the network type data, judging whether the position difference between the virtual site information data of the optimal network type and the reference site information data which does not meet the requirement in the step (S3) meets a preset threshold, and if so, executing the step (S5).
In step S4, virtual site information data of an optimal network type is obtained by calculation according to the network type data, specifically:
and taking the average center of the coordinates of more than four reference stations around the reference station as the virtual station information data of the optimal network according to the position of the reference station information data which does not meet the preset threshold requirement.
And S5, correcting original observation data in the reference station site information data associated with the virtual site information data in the networking result according to the virtual site information data in the step S4, so as to realize the foundation enhancement network type optimization.
The step S5 specifically comprises the following steps:
and (3) correcting the original observation data in the reference station site information data associated with the virtual site information data in the networking result according to the virtual site information data in the step (S4), and correcting the antenna parameters. And sending the corrected data to a differential computing platform to calculate differential data.
That is, the original observation data of the station which does not meet the distance threshold requirement is corrected according to the position of the virtual station, and the corrected content comprises geometric correction and antenna correction. And calculating the distance delay caused by coordinate change by utilizing the coordinates of the two points, calculating the distance delay caused by different antenna types, adding the delays to the original observed data, and broadcasting the delays to a foundation enhancement resolving platform.
After the data correction, the network is re-established again.
The present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements a virtual station based ground enhancement net-type optimization method as described above.
Fig. 2 is a demonstration of the modification of the reference station position in this embodiment, by which the net shape can be effectively improved. Wherein the solid line is the pre-modification net type and the dotted line is the modified net type.
In the embodiment, the strategy of adjusting the site position is realized through the virtual reference station, so that the foundation enhanced network distribution is improved, and the service experience of a user positioned relatively in real time is improved. The technology can reduce the difficulty of building the reference station, can effectively avoid the situation that the reference station is not suitable for building in lakes, mountain lands and other areas, and simultaneously greatly reduces the difficulty of maintenance personnel to maintain the reference station.
According to the embodiment, the position of the reference station can be adjusted by using a virtualized reference station technology, so that a high-quality resolving result is formed by resolving the foundation enhancement network, positioning service with a larger range, lower cost and higher precision is provided for regional high-precision foundation enhancement service, the running reliability, high efficiency, stability and safety of the Beidou comprehensive service platform are improved, and therefore the platform advantage is improved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (4)
1. The foundation enhancement network type optimization method based on the virtual station is characterized by comprising the following steps of:
s1, acquiring site information data of a reference station in a foundation enhancement network;
s2, networking operation is carried out according to the site information data of the reference station, and a networking result is obtained;
s3, acquiring reference station site information data which does not meet requirements in a networking result;
s4, setting virtual station information data to adjust the position of the reference station information data acquired in the step S3, so that the networking result meets the requirement;
s5, correcting original observation data in reference station site information data associated with the virtual site information data in the networking result according to the virtual site information data in the step S4, so as to realize foundation enhancement network type optimization;
the step S2 specifically comprises the following steps:
networking operation is carried out on the site information data of the reference station by using a triangle networking method, so that a baseline distance after networking is obtained; networking operation is carried out on the site information data of the reference station by using a triangle networking method, so as to obtain networking network data;
the step S3 specifically comprises the following steps:
screening by combining the obtained baseline distance with a preset threshold, and screening out reference station site information data which does not accord with the preset threshold;
the step S4 specifically comprises the following steps:
calculating to obtain virtual site information data of an optimal network type according to the network type data, judging whether the position difference between the virtual site information data of the optimal network type obtained by calculation and the reference site information data which does not meet the requirement in the step S3 meets a preset threshold, and if so, executing the step S5;
in step S4, virtual site information data of an optimal network type is obtained by calculation according to the network type data, specifically:
and taking the average center of the coordinates of more than four reference stations around the reference station as the virtual station information data of the optimal network according to the position of the reference station information data which does not meet the preset threshold requirement.
2. The method for optimizing the network type of the foundation enhancement network based on the virtual station according to claim 1, wherein the step S5 is specifically:
and (3) correcting the original observed data in the reference station information data associated with the virtual station information data in the networking result according to the virtual station information data in the step (S4), and sending the corrected data to a differential calculation platform to calculate differential data.
3. The method for optimizing a foundation enhancement network type based on a virtual station according to claim 2, wherein step S5 further comprises: and correcting the antenna parameters.
4. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method according to any of claims 1-3.
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