CN112415544A - GPS test system, method and terminal equipment - Google Patents
GPS test system, method and terminal equipment Download PDFInfo
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- CN112415544A CN112415544A CN202011350535.3A CN202011350535A CN112415544A CN 112415544 A CN112415544 A CN 112415544A CN 202011350535 A CN202011350535 A CN 202011350535A CN 112415544 A CN112415544 A CN 112415544A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
Abstract
The embodiment of the invention discloses a GPS test system, a method and terminal equipment. The GPS test system comprises a GPS terminal to be tested, a GPS signal generator and a measurement and control system; the GPS signal generator is used for sending a positioning signal to the GPS terminal to be detected; the GPS terminal to be tested comprises a GPS chip, the GPS chip comprises a receiving module and a transmitting module, the receiving module is used for receiving the positioning signal sent by the GPS signal generator, and the transmitting module is used for sending the position signal generated according to the positioning signal to the GPS signal generator; the GPS signal generator is also used for comparing preset position information with the position signal and sending a comparison result to the measurement and control system; the measurement and control system is used for receiving the comparison result and controlling the power of the positioning signal sent to the receiving module by the GPS signal generator according to the comparison result. The system can reduce equipment required by testing, avoid interference generated by other modules and improve the testing precision of the sensitivity index of the GPS terminal to be tested.
Description
Technical Field
The invention relates to the technical field of GPS, in particular to a GPS test system, a method and terminal equipment.
Background
The GPS (Global Positioning System) is a Positioning System with high accuracy, automation, large scale and high benefit, and as the intelligent terminal is popularized and the GPS navigation function is improved, more and more users use the GPS navigation function through the terminal while going out. After the GPS module in the terminal is designed, it is usually necessary to detect the minimum power of the positioning signal required for the GPS module to be able to successfully position, so as to determine the positioning sensitivity index of the GPS module. In the research and practice process of the prior art, the inventor of the invention finds that the GPS module can only receive signals but cannot transmit signals, and when sensitivity detection is performed, other modules need to be used for sending generated position information to test software, so that the test of the GPS module needs complex and various devices, and interference signals can be introduced to influence the test accuracy of sensitivity indexes.
Disclosure of Invention
The embodiment of the invention provides a GPS test system, a method and terminal equipment, wherein a transmitting module is arranged in a GPS terminal to be tested, so that the GPS terminal to be tested can send generated position information without using other modules, equipment required by test is reduced, interference generated by other modules is avoided, and the test precision of sensitivity indexes is improved.
The embodiment of the invention provides a GPS test system, which comprises a GPS terminal to be tested, a GPS signal generator and a measurement and control system;
the GPS signal generator is used for sending a positioning signal to the GPS terminal to be detected;
the GPS terminal to be tested comprises a GPS chip, the GPS chip comprises a receiving module and a transmitting module, the receiving module is used for receiving the positioning signal sent by the GPS signal generator, and the transmitting module is used for sending a position signal generated according to the positioning signal to the GPS signal generator;
the GPS signal generator is also used for comparing preset position information with the position signal and sending a comparison result to the measurement and control system;
the measurement and control system is used for receiving the comparison result and controlling the power of the positioning signal sent to the receiving module by the GPS signal generator according to the comparison result.
Optionally, in some embodiments of the present invention, the GPS terminal to be tested includes a host address of the GPS signal generator.
Optionally, in some embodiments of the present invention, the GPS terminal to be tested includes a duplexer, the duplexer is electrically connected to the GPS chip, and the duplexer is configured to combine a receiving path for transmitting the positioning signal and a transmitting path for transmitting the position signal.
Optionally, in some embodiments of the present invention, the GPS terminal to be tested includes a low noise amplifier, the low noise amplifier is electrically connected between the GPS chip and the duplexer, and the low noise amplifier is configured to amplify the positioning signal sent by the duplexer and send the amplified positioning signal to the GPS chip.
Optionally, in some embodiments of the present invention, the GPS terminal to be tested includes a filter, the filter is electrically connected between the low noise amplifier and the GPS chip, and the filter is configured to filter an interference signal.
Optionally, in some embodiments of the present invention, the GPS terminal to be tested includes a GPS antenna, the GPS antenna is electrically connected to the duplexer, and the GPS antenna is configured to receive the positioning signal sent by the GPS signal generator, send the positioning signal to the duplexer, receive the position signal sent by the duplexer, and send the position signal to the GPS signal generator.
Correspondingly, the embodiment of the invention also provides a GPS test method, which comprises the following steps:
controlling a GPS signal generator to send a positioning signal to a GPS terminal to be detected through a measurement and control system;
controlling the GPS terminal to be tested to generate a position signal according to the received positioning signal and sending the position signal to the GPS signal generator;
comparing the position signal with preset position information by using the GPS signal generator, and sending a comparison result to the measurement and control system;
and determining the target power of the positioning signal required by the GPS terminal to be detected according to the comparison result by the measurement and control system.
Optionally, in some embodiments of the present invention, the comparing the position signal with preset position information by using the GPS signal generator, and sending a comparison result to the measurement and control system includes:
comparing the position signal with preset position information by using the GPS signal generator;
when the deviation between the position signal and the preset position information is smaller than or equal to a preset deviation threshold value, the GPS signal generator determines that the GPS terminal to be tested is successfully positioned, and reports the position signal to the measurement and control system;
and when the deviation between the position signal and the preset position information is greater than the deviation threshold value, determining that the positioning of the GPS terminal to be detected fails through the GPS signal generator, and reporting to the measurement and control system.
Optionally, in some embodiments of the present invention, the determining, by the measurement and control system according to the comparison result, the power of the positioning signal sent by the GPS signal generator to the GPS terminal to be tested includes:
and recording the power of the positioning signal sent to the GPS terminal to be tested by the GPS signal generator through the measurement and control system to form a power list.
When the GPS terminal to be detected is determined to be successfully positioned, reducing the power of a current positioning signal sent to the GPS terminal to be detected by the GPS signal generator through the measurement and control system according to the power list;
and when the positioning of the GPS terminal to be detected is determined to be failed, determining the power of the positioning signal which is positioned in front of the power of the current positioning signal in the power list and adjacent to the power of the current positioning signal as the target power through the measurement and control system.
In addition, the embodiment of the invention also provides terminal equipment which comprises the GPS test system.
The embodiment of the invention provides a GPS test system, a method and terminal equipment, wherein the GPS test system comprises a GPS terminal to be tested, a GPS signal generator and a measurement and control system, the GPS terminal to be tested comprises a GPS chip, the GPS chip comprises a receiving module and a transmitting module, the receiving module is used for receiving a positioning signal sent by the GPS signal generator, and the transmitting module is used for sending a position signal generated according to the positioning signal to the GPS signal generator. When the GPS test is carried out, the GPS terminal to be tested receives the positioning signal sent by the GPS signal generator and generates a position signal, then the GPS terminal to be tested utilizes the sending module of the GPS terminal to send the position signal to the GPS signal generator, the GPS signal generator compares the position signal with preset position information and sends a comparison result to the measurement and control system, and the measurement and control system determines the sensitivity index of the GPS terminal to be tested according to the comparison result. According to the technical scheme, the GPS terminal to be tested sends the position signal by using the transmitting module of the GPS terminal to be tested instead of sending the position signal by using other modules except the GPS terminal to be tested, so that equipment required by testing is reduced, interference generated by other modules is avoided, and the testing precision of the sensitivity index of the GPS terminal to be tested is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a GPS test system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a GPS terminal to be tested according to an embodiment of the present invention;
FIG. 3 is a flow chart of a GPS testing method provided by an embodiment of the invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "spaced" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Referring to fig. 1, an embodiment of the present application provides a GPS testing system 10.
Referring to fig. 2, the GPS testing system 10 includes a GPS terminal 101 to be tested, a GPS signal generator 102, and a measurement and control system 103; a GPS signal generator 102 for sending a positioning signal to the GPS terminal 101 to be tested; the GPS terminal 101 to be tested comprises a GPS chip 1011, the GPS chip 1011 comprises a receiving module 10111 and a transmitting module 10112, the receiving module 10111 is used for receiving a positioning signal sent by the GPS signal generator 102, and the transmitting module 10112 is used for sending a position signal generated according to the positioning signal to the GPS signal generator 102; the GPS signal generator 102 is further configured to compare preset position information with the position signal, and send a comparison result to the measurement and control system 103; the measurement and control system 103 is configured to receive the comparison result, and control the power of the positioning signal sent by the GPS signal generator 102 to the receiving module 10111 according to the comparison result.
In an embodiment, the measurement and control system 103 is further configured to receive a comparison result sent by the GPS signal generator 102, determine whether the GPS terminal 101 to be tested is successfully positioned under the power value of the current positioning signal, control the GPS signal generator 102 to send a positioning signal with reduced power to the GPS terminal 101 to be tested if the positioning is successful, and record the power of the current positioning signal, and control the GPS signal generator 102 to send the positioning signal to the GPS terminal 101 to be tested with unchanged power if the positioning is failed, and determine the minimum power at which the GPS terminal 101 to be tested can be successfully positioned.
In some embodiments, the GPS test system 10 further includes a host address of the GPS signal generator 102, and the GPS terminal 101 sends the generated position signal to the GPS signal generator 102 according to the host address of the GPS signal generator 102 preset by the terminal 101.
In one embodiment, referring to fig. 2, the GPS terminal 101 further includes a duplexer 1014, where the duplexer 1014 is configured to combine a receiving path for transmitting the positioning signal and a transmitting path for transmitting the position signal, and isolate the transmitting signal from the receiving signal, so as to ensure that the GPS terminal 101 can receive and transmit signals at the same time.
In some embodiments, referring to fig. 2, the GPS terminal 101 to be tested further includes a low noise amplifier 1013, the low noise amplifier 1013 has a low noise coefficient, and the low noise amplifier 1013 is configured to amplify the weak positioning signal sent by the duplexer 1014 and send the amplified positioning signal to the GPS chip 1011.
In one embodiment, referring to fig. 2, the GPS terminal 101 to be tested further includes a filter 1012, where the filter 1012 is used to filter the interference signal in the GPS terminal 101 to be tested, so as to avoid the blocking of the receiving module 10111 of the GPS terminal 101 to be tested.
In one embodiment, referring to fig. 2 together, the GPS terminal 101 to be tested further includes a GPS antenna 1015, where the GPS antenna 1015 is configured to receive an electromagnetic wave corresponding to the positioning signal sent by the GPS signal generator 102, convert the electromagnetic wave into the positioning signal expressed in the current form in the GPS terminal 101 to be tested, and then send the converted positioning signal to the duplexer 1014, and the GPS antenna 1015 is further configured to receive a position signal sent by the duplexer 1014, convert the position signal expressed in the current form into a corresponding electromagnetic wave, and then send the electromagnetic wave corresponding to the position signal to the GPS signal generator 102.
In one embodiment, referring to fig. 2, the GPS antenna 1015 in the GPS terminal 101 to be tested is electrically connected to the duplexer 1014, the duplexer 1014 is electrically connected to the transmitting module 10112 and the receiving module 10111 included in the GPS chip 1011, the transmitting module 10112 has a transmitting port for outputting a position signal to be transmitted, the duplexer 1014 is electrically connected to the transmitting port to form a transmitting path, the receiving module 10111 has a receiving port for inputting a received positioning signal, the duplexer 1014 is electrically connected to the receiving port to form a receiving path, the filter 1012 and the low noise amplifier 1013 are sequentially electrically connected between the duplexer 1014 and the receiving module 10111 included in the GPS chip 1011, the low noise amplifier 1013 is electrically connected to the duplexer 1013, and the filter 1012 is electrically connected to the receiving module 10111.
When the GPS terminal 101 to be tested receives the positioning signal sent by the GPS signal generator 102 and generates a position signal, the GPS terminal 101 to be tested sends the position signal to the GPS signal generator 102 by using the sending module 10112 of the GPS terminal 101 to be tested, the GPS signal generator 102 compares the position signal with preset position information and sends a comparison result to the measurement and control system 103, and the measurement and control system 103 determines the minimum power at which the GPS terminal 101 to be tested can be successfully positioned according to the comparison result, thereby determining the sensitivity index of the GPS terminal 101 to be tested. Because the GPS terminal 101 to be tested sends the position signal by using the self transmitting module 10112 instead of sending the position signal by using other modules except the GPS terminal 101 to be tested, the system provided by the invention reduces the equipment required by the test, avoids the interference generated by other modules and improves the test precision of the sensitivity index.
According to the above system, an embodiment of the present invention may further provide a GPS testing method, as shown in fig. 3, a specific flow of the GPS testing method is as follows:
301, controlling the GPS signal generator to send a positioning signal to the GPS terminal to be detected through the measurement and control system.
For example, the GPS signal generator sends a positioning signal with high power to the GPS terminal to be measured, where the positioning signal is information required by the GPS terminal to be measured to perform positioning, such as satellite ephemeris, almanac information, and the like.
Optionally, if the GPS signal generator receives an instruction of the measurement and control system to reduce the power of the positioning signal, the GPS signal generator reduces the power of the positioning signal according to a specific value in the instruction, and then sends the positioning signal with the reduced power to the GPS terminal to be tested.
Optionally, if the GPS signal generator receives an instruction that the measurement and control system does not change the power of the positioning signal, the GPS signal generator sends the positioning signal to the GPS terminal to be tested according to the instruction.
And step 302, controlling the GPS terminal to be tested to generate a position signal according to the received positioning signal and sending the position signal to the GPS signal generator.
For example, a receiving module of a GPS chip included in the GPS terminal to be tested receives a positioning signal sent by a GPS signal generator, generates a position signal according to the positioning signal, where the position signal includes longitude and latitude, height, and/or the like, and then the GPS terminal to be tested sends the position signal to the GPS signal generator by using a transmitting module of the GPS chip.
Optionally, a host address of the GPS signal generator is preconfigured in the GPS terminal to be tested, the host address is used to identify a location of the GPS signal generator, and after the GPS terminal to be tested generates the location signal, the location signal is sent to the GPS signal generator according to the host address.
And 303, comparing the position signal with preset position information by using the GPS signal generator, and sending a comparison result to the measurement and control system.
For example, the GPS signal generator receives a position signal sent by the GPS terminal to be measured, compares the position signal with predetermined preset position information, and if a deviation between the position signal and the preset position information is less than or equal to a predetermined deviation threshold, the GPS signal generator determines that the GPS terminal to be measured is successfully positioned, and reports a result of the successful positioning to the measurement and control system.
Optionally, when the deviation between the received position signal and the preset position information is greater than a deviation threshold, the GPS signal generator determines that the positioning of the GPS terminal to be measured fails, and reports the result of the positioning failure to the measurement and control system.
And 304, determining the target power of the positioning signal required by the GPS terminal to be detected according to the comparison result through the measurement and control system.
For example, the measurement and control system records the power of a positioning signal sent by the GPS signal generator to the GPS terminal to be measured each time, and determines the power of the positioning signal sent by the GPS signal generator to the GPS terminal to be measured next time according to the power of the positioning signal sent by the GPS signal generator recorded each time and the comparison result sent by the received GPS signal generator until the target power of the positioning signal required by the GPS terminal to be measured is determined.
Optionally, the measurement and control system records the power of the positioning signal sent by the GPS signal generator to the GPS terminal to be tested to form a power list, and after the measurement and control system receives the comparison result between the position signal sent by the GPS signal generator and the preset position information, if the measurement and control system determines that the result of successful positioning of the GPS terminal to be tested is received, the power of the current positioning signal sent by the GPS signal generator to the GPS terminal to be tested is reduced according to the power list.
Optionally, the measurement and control system determines a specific numerical value for reducing the power of the positioning signal according to the recorded power of the historical sending positioning signal, then sends the reduced power of the positioning signal to the GPS signal generator, and controls the GPS signal generator to send the reduced power of the positioning signal to the GPS terminal to be tested.
The specific value for reducing the power of the positioning signal is not limited, and can be set to 3dB, 1dB, 0.5dB and the like, and can be flexibly set according to the actual situation.
Optionally, the measurement and control system determines a specific value for reducing the power of the positioning signal according to the recorded historical power for sending the positioning signal, and then sends the specific value to the GPS signal generator, and the GPS signal generator subtracts the specific value from the power value of the positioning signal sent recently to obtain the power for sending the positioning signal to the GPS terminal to be measured next time.
Optionally, after the measurement and control system receives the comparison result between the position signal sent by the GPS signal generator and the preset position information, if the measurement and control system determines that the result of positioning failure of the GPS terminal to be detected is received, the power of the current positioning signal sent by the GPS signal generator to the GPS terminal to be detected is not changed, the GPS signal generator is controlled to still send the positioning signal of the current power to the GPS terminal to be detected, until the measurement and control system receives the power and the number of times of positioning failure of the GPS terminal to be detected reaches a preset number threshold, it is indicated that the power of the current positioning signal cannot achieve the positioning function of the GPS terminal to be detected, and the measurement and control system determines the power of the positioning signal which is located before the power of the current positioning signal in the power list and is adjacent to the power of the current positioning signal as the.
Optionally, if the measurement and control system does not receive the comparison result between the position signal sent by the GPS signal generator and the preset position information, it is determined that the positioning of the GPS terminal to be measured fails, and the power of the current positioning signal sent by the GPS signal generator to the GPS terminal to be measured is not changed.
Accordingly, an embodiment of the present invention further provides a terminal, as shown in fig. 4, the terminal may include Radio Frequency (RF) circuits 401, a memory 402 including one or more computer-readable storage media, an input unit 403, a display unit 404, a sensor 405, an audio circuit 406, a Wireless Fidelity (WiFi) module 407, a processor 408 including one or more processing cores, and a power supply 409. Those skilled in the art will appreciate that the terminal configuration shown in fig. 4 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. Wherein:
the RF circuit 401 may be used for receiving and transmitting signals during a message transmission or communication process, and in particular, for receiving downlink information of a base station and then sending the received downlink information to the one or more processors 408 for processing; in addition, data relating to uplink is transmitted to the base station. In general, the RF circuitry 401 includes, but is not limited to, an antenna, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 401 may also communicate with networks and other devices via wireless communications.
The memory 402 may be used to store software programs and modules, and the processor 408 executes various functional applications and data processing by operating the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal, etc. Further, the memory 402 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 402 may also include a memory controller to provide the processor 408 and the input unit 403 access to the memory 402.
The input unit 403 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in a particular embodiment, the input unit 403 may include a touch-sensitive surface as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (e.g., operations by a user on or near the touch-sensitive surface using a finger, a stylus, or any other suitable object or attachment) thereon or nearby, and drive the corresponding connection device according to a predetermined program.
The display unit 404 may be used to display information input by or provided to the user and various graphical user interfaces of the terminal, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 404 may include a Display panel, and optionally, the Display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The terminal may also include at least one sensor 405, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that may turn off the display panel and/or the backlight when the terminal is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the terminal, detailed description is omitted here.
WiFi belongs to short distance wireless transmission technology, and the terminal can help the user to send and receive e-mail, browse web page and access streaming media etc. through WiFi module 407, it provides wireless broadband internet access for the user. Although fig. 4 shows the WiFi module 407, it is understood that it does not belong to the essential constitution of the terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 408 is a control center of the terminal, connects various parts of the entire handset using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 402 and calling data stored in the memory 402, thereby integrally monitoring the handset. Optionally, processor 408 may include one or more processing cores; the processor 408 may include a GPS chip including a receiving module for receiving the positioning signal sent by the GPS signal generator and a transmitting module for sending a position signal generated from the positioning signal to the GPS signal generator.
The terminal also includes a power source 409 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 408 via a power management system to manage charging, discharging, and power consumption via the power management system. The power supply 409 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
Although not shown, the terminal may further include a camera, a bluetooth module, and the like, which will not be described herein. Specifically, in this embodiment, the processor 408 in the terminal loads the executable file corresponding to the process of one or more application programs into the memory 402 according to the following instructions, and the processor 408 runs the application programs stored in the memory 402, thereby implementing various functions: controlling a GPS signal generator to send a positioning signal to a GPS terminal to be detected through a measurement and control system; controlling the GPS terminal to be tested to generate a position signal according to the received positioning signal and sending the position signal to a GPS signal generator; comparing the position signal with preset position information by using a GPS signal generator, and sending a comparison result to a measurement and control system; and determining the target power of the positioning signal required by the GPS terminal to be detected according to the comparison result through the measurement and control system.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The GPS testing system, the method and the terminal device provided by the embodiment of the present invention are described in detail, and a specific example is applied in the description to explain the principle and the implementation of the present invention, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A GPS test system is characterized by comprising a GPS terminal to be tested, a GPS signal generator and a measurement and control system;
the GPS signal generator is used for sending a positioning signal to the GPS terminal to be detected;
the GPS terminal to be tested comprises a GPS chip, the GPS chip comprises a receiving module and a transmitting module, the receiving module is used for receiving the positioning signal sent by the GPS signal generator, and the transmitting module is used for sending a position signal generated according to the positioning signal to the GPS signal generator;
the GPS signal generator is also used for comparing preset position information with the position signal and sending a comparison result to the measurement and control system;
the measurement and control system is used for receiving the comparison result and controlling the power of the positioning signal sent to the receiving module by the GPS signal generator according to the comparison result.
2. The GPS test system according to claim 1, wherein the GPS terminal under test includes a host address of the GPS signal generator.
3. The GPS test system according to claim 1, wherein the GPS terminal under test comprises a duplexer, the duplexer is electrically connected to the GPS chip, and the duplexer is used for combining a receiving path for transmitting the positioning signal and a transmitting path for transmitting the position signal.
4. The GPS test system according to claim 3, wherein the GPS terminal under test comprises a low noise amplifier electrically connected between the GPS chip and the duplexer, the low noise amplifier is used for amplifying the positioning signal sent by the duplexer and sending the amplified positioning signal to the GPS chip.
5. The GPS test system according to claim 4, wherein the GPS terminal under test comprises a filter, the filter is electrically connected between the low noise amplifier and the GPS chip, and the filter is used for filtering interference signals.
6. The GPS test system according to claim 3, wherein the GPS terminal to be tested comprises a GPS antenna, the GPS antenna is electrically connected with the duplexer, and the GPS antenna is used for receiving the positioning signal sent by the GPS signal generator, sending the positioning signal to the duplexer, receiving the position signal sent by the duplexer, and sending the position signal to the GPS signal generator.
7. A GPS testing method, comprising:
controlling a GPS signal generator to send a positioning signal to a GPS terminal to be detected through a measurement and control system;
controlling the GPS terminal to be tested to generate a position signal according to the received positioning signal and sending the position signal to the GPS signal generator;
comparing the position signal with preset position information by using the GPS signal generator, and sending a comparison result to the measurement and control system;
and determining the target power of the positioning signal required by the GPS terminal to be detected according to the comparison result by the measurement and control system.
8. The method of claim 7, wherein comparing the position signal with preset position information by the GPS signal generator and sending the comparison result to the measurement and control system comprises:
comparing the position signal with preset position information by using the GPS signal generator;
when the deviation between the position signal and the preset position information is smaller than or equal to a preset deviation threshold value, the GPS signal generator determines that the GPS terminal to be tested is successfully positioned, and reports the position signal to the measurement and control system;
and when the deviation between the position signal and the preset position information is greater than the deviation threshold value, determining that the positioning of the GPS terminal to be detected fails through the GPS signal generator, and reporting to the measurement and control system.
9. The method according to claim 8, wherein the determining, by the measurement and control system, the target power of the positioning signal required by the GPS terminal to be tested according to the comparison result includes:
and recording the power of the positioning signal sent to the GPS terminal to be tested by the GPS signal generator through the measurement and control system to form a power list.
When the GPS terminal to be detected is determined to be successfully positioned, reducing the power of a current positioning signal sent to the GPS terminal to be detected by the GPS signal generator through the measurement and control system according to the power list;
and when the positioning of the GPS terminal to be detected is determined to be failed, determining the power of the positioning signal which is positioned in front of the power of the current positioning signal in the power list and adjacent to the power of the current positioning signal as the target power through the measurement and control system.
10. A terminal device, characterized in that it comprises a GPS test system according to any one of claims 1 to 6.
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