CN110967707A - High-precision virtual drive test system and method for positioning performance of 5G mobile communication terminal - Google Patents
High-precision virtual drive test system and method for positioning performance of 5G mobile communication terminal Download PDFInfo
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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
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Abstract
The field of mobile communication terminal positioning performance test, in particular to a high-precision virtual drive test system for the positioning performance of a 5G mobile communication terminal, which comprises a signal acquisition end and a signal playback test end; the signal acquisition end comprises an antenna, an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument; the RTK combined inertial navigation mobile station equipment is provided with control software; the signal playback test end comprises a control terminal server, a tested 5G smart phone and a navigation signal acquisition playback instrument; the antenna transmits the received GNSS satellite signals to an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument in real time; the navigation signal acquisition playback instrument sends the received GNSS satellite signals to the tested 5G smart phone. Has the advantages that: and the signal acquisition part acquires signals by adopting a navigation signal acquisition playback instrument and matching with equipment such as a high-precision RTK combined inertial navigation mobile station and the like, so that the positioning precision can be improved to a centimeter level, the test cost is effectively reduced, and the test efficiency is improved.
Description
Technical Field
The invention belongs to the field of mobile communication terminal positioning performance testing, and particularly relates to a high-precision virtual drive test system and method for 5G mobile communication terminal positioning performance.
Background
The Global Navigation Satellite System (GNSS) is widely used in 5G mobile communication terminals. Currently, there are three main ways for testing the positioning performance of a 5G mobile communication terminal: firstly, a satellite navigation signal simulation source test is carried out in a laboratory environment, secondly, an outdoor receiving antenna is utilized to carry out an antenna performance test, and thirdly, a navigation signal acquisition playback instrument is utilized to carry out a virtual drive test; the virtual drive test can be repeated for a plurality of times in a laboratory to construct a test scene close to a real satellite signal.
In the signal acquisition stage, the main stream of the navigation signal acquisition playback instrument used in the virtual drive test system adopts a built-in satellite navigation positioning module to calibrate the position, the positioning precision can only reach 5 to 10 meters, and the uncertainty of the test result is large, namely the problem that the position calibration precision is not high is prominent when the navigation signal acquisition playback instrument records satellite signals, and the problem becomes a technical bottleneck.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-precision virtual drive test system and a method for the positioning performance of a 5G mobile communication terminal, which can be used for data acquisition and playback of an external actual scene and judging the quality of the positioning performance of a product.
The specific technical scheme is as follows: a virtual drive test system with high positioning performance of a 5G mobile communication terminal comprises a signal acquisition end and a signal playback test end;
the signal acquisition end comprises an antenna, an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument; the RTK combined inertial navigation mobile station equipment is provided with control software;
the signal playback test end comprises a control terminal server, a tested 5G mobile communication terminal, a navigation signal acquisition playback instrument and a network switch;
the antenna transmits the received GNSS satellite signals to an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument in real time; the navigation signal acquisition playback instrument sends the received GNSS satellite signals to the tested 5G mobile communication terminal;
the RTK reference station is erected at a position with fixed coordinates, continuously receives GNSS satellite signals to obtain a common error correction quantity, and communicates with the RTK combined inertial navigation mobile station through a wireless link;
the RTK combined inertial navigation mobile station receives the differential correction quantity broadcasted by the RTK reference station through an antenna to obtain centimeter-level dynamic positioning accuracy;
after the signal acquisition is finished, the RTK combined inertial navigation mobile station control software captures satellite original data, and the positioning result data is generated after the original data conversion, the GNSS calculation, the GPS/INS calculation and the smoothing processing and is transmitted and guided into a navigation signal acquisition playback instrument through an RS232 serial port for recording the motion trail and the real-time speed of the road test;
the tested 5G mobile communication terminal receives the GNSS satellite signal feedback positioning result sent by the navigation signal acquisition playback instrument and feeds the positioning result to the control terminal server;
the control terminal server extracts high-precision position calibration information recorded in the navigation signal acquisition playback instrument through a data transmission link, namely data recorded and processed by the RTK combined inertial navigation mobile station, after test scene parameters are configured, the scene is played, position and speed information reported by the 5G mobile communication terminal to be tested is compared with the previously recorded high-precision position calibration information, a test result and a report are generated, and virtual road test is realized.
Preferably, a 5G mobile communication terminal positioning performance high-precision virtual drive test method based on the 5G mobile communication terminal positioning performance high-precision virtual drive test system includes the following steps:
step one, an RTK base station receives a satellite signal through an antenna;
secondly, the RTK combined inertial navigation mobile station continuously receives information sent by an RTK reference station through a mobile network on a preset drive test moving path, corrects the positioning accuracy through calculation, and outputs a positioning result to a navigation signal acquisition playback instrument through format conversion;
thirdly, the navigation signal acquisition playback instrument and the RTK combined inertial navigation mobile station synchronously receive the satellite signals on the road test moving path through the antenna, and obtain the accurate positioning result output by the RTK combined inertial navigation mobile station to complete the signal acquisition process;
step four, the navigation signal acquisition playback instrument sends the navigation signals acquired in advance to the tested 5G mobile communication terminal;
step five, after the tested 5G mobile communication terminal receives the satellite signal sent by the navigation signal acquisition playback instrument, feeding back a positioning result to the control terminal server;
and step six, the control terminal server extracts the positioning information in the navigation signal acquisition playback instrument, compares the positioning information with the positioning information fed back by the 5G mobile communication terminal to be tested, and judges the positioning performance of the 5G mobile communication terminal.
Preferably, the GNSS satellite signals received by the RTK reference station related to the system or method for virtual drive test with high positioning performance of the 5G mobile communication terminal include pseudo-range observation values and phase observation values.
Preferably, the common error correction quantity related to the 5G mobile communication terminal positioning performance high-precision virtual drive test system or method comprises atmospheric delay and a star clock error.
Preferably, the positioning result data related to the 5G mobile communication terminal positioning performance high-precision virtual drive test system or method is transmitted and guided into the navigation signal acquisition playback instrument through an RS232 serial port in a standard NMEA0183 format.
Preferably, the 5G mobile communication terminal related to the 5G mobile communication terminal positioning performance high-precision virtual drive test system or method is a 5G smart phone.
After the technical scheme is adopted, the invention has the beneficial effects that:
compared with the disclosed technical scheme, the technical scheme divides the virtual drive test method for the 5G mobile communication terminal equipment into two steps of signal acquisition and signal playback test; the signal acquisition part adopts a navigation signal acquisition playback instrument to be matched with equipment such as a high-precision RTK combined inertial navigation mobile station and the like to acquire signals, the positioning precision can be improved to centimeter level, the test cost is effectively reduced, and the test efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a 5G mobile communication terminal positioning performance high-precision virtual drive test system signal acquisition terminal connection;
fig. 2 is a schematic connection diagram of a signal playback test end of a 5G mobile communication terminal positioning performance high-precision virtual drive test system.
Detailed Description
The invention will be described in detail with reference to the accompanying figures 1 and 2 and the specific embodiments, but the invention is not limited thereto.
Example one
As shown in the system shown in fig. 1 and 2, a 5G mobile communication terminal positioning performance high-precision virtual drive test system comprises a signal acquisition end and a signal playback test end;
the signal acquisition end comprises an antenna, an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument; the RTK combined inertial navigation mobile station equipment is provided with control software;
the signal playback test end comprises a control terminal server, a tested 5G smart phone, a navigation signal acquisition playback instrument and a network switch;
the antenna transmits the received GNSS satellite signals to an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument in real time; the navigation signal acquisition playback instrument sends the received GNSS satellite signals to the tested 5G smart phone;
the RTK base station is erected at a position with fixed coordinates, continuously receives GNSS satellite signals (comprising pseudo-range observation values and phase observation values), obtains common error correction quantities (atmospheric time delay, satellite clock errors and the like), and communicates with the RTK combined inertial navigation mobile station through a wireless link;
the RTK combined inertial navigation mobile station receives the differential correction quantity broadcasted by the RTK reference station through an antenna to obtain centimeter-level dynamic positioning accuracy;
after the signal acquisition is finished, the RTK combined inertial navigation mobile station control software captures satellite original data, and the satellite original data is converted, subjected to GNSS resolving, GPS/INS resolving and smoothing processing to generate standard NMEA0183 format data, transmitted through an RS232 serial port and introduced into a navigation signal acquisition playback instrument, and used for recording the movement track and the real-time speed of the road test;
the tested 5G smart phone receives the GNSS satellite signals fed back to the positioning result to the control terminal server according to the navigation signal acquisition playback instrument;
the control terminal server extracts high-precision position calibration information recorded in the navigation signal acquisition playback instrument through a data transmission link, namely data recorded and processed by the RTK combined inertial navigation mobile station, after test scene parameters are configured, the scene is played, position and speed information reported by the tested 5G smart phone is compared with the previously recorded high-precision position calibration information, a test result and a report are generated, and virtual road test is achieved.
Example two
Based on the 5G smart phone positioning performance high-precision virtual drive test system in the first embodiment, the 5G smart phone positioning performance high-precision virtual drive test method includes the following steps:
step one, an RTK base station receives a satellite signal through an antenna;
secondly, the RTK combined inertial navigation mobile station continuously receives information sent by an RTK reference station through a mobile network on a preset drive test moving path, corrects the positioning accuracy through calculation, and outputs a positioning result to a navigation signal acquisition playback instrument through format conversion;
thirdly, the navigation signal acquisition playback instrument and the RTK combined inertial navigation mobile station synchronously receive the satellite signals on the road test moving path through the antenna, and obtain the accurate positioning result output by the RTK combined inertial navigation mobile station to complete the signal acquisition process;
step four, the navigation signal acquisition playback instrument sends the navigation signals acquired in advance to the tested 5G smart phone;
step five, after the tested 5G smart phone receives the satellite signal sent by the navigation signal acquisition playback instrument, feeding back a positioning result to the control terminal server;
and sixthly, the control terminal server extracts the positioning information in the navigation signal acquisition playback instrument, compares the positioning information with the positioning information fed back by the tested 5G smart phone, and judges the positioning performance of the 5G smart phone.
By using the virtual road test system to collect typical weather such as overcast and rainy, haze, clear and the like and satellite scenes under typical road conditions such as viaducts, tunnels, high speed and the like, the position reference precision of the collected satellite signals is superior to 1 cm. And the signal playback test end tests the positioning performance of the 5G smart phone and compares the acquired satellite signals with the positioning track of the tested 5G smart phone and the track accurately calibrated during recording. The result shows that the system can efficiently evaluate the positioning performance of the 5G mobile communication terminal in the practical application environment.
It will be appreciated by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (6)
1. The utility model provides a virtual drive test system of 5G mobile communication terminal positioning performance high accuracy which characterized in that: the device comprises a signal acquisition end and a signal playback test end;
the signal acquisition end comprises an antenna, an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument; the RTK combined inertial navigation mobile station equipment is provided with control software;
the signal playback test end comprises a control terminal server, a tested 5G mobile communication terminal and a navigation signal acquisition playback instrument;
the antenna transmits the received GNSS satellite signals to an RTK reference station, an RTK combined inertial navigation mobile station and a navigation signal acquisition playback instrument in real time; the navigation signal acquisition playback instrument sends the received GNSS satellite signals to the tested 5G mobile communication terminal;
the RTK base station is erected at a position with fixed coordinates, continuously receives GNSS satellite signals to obtain a common error correction quantity, and communicates with the RTK combined inertial navigation mobile station through a wireless link;
the RTK combined inertial navigation mobile station receives the differential correction quantity broadcasted by the RTK reference station to obtain centimeter-level dynamic positioning accuracy;
after the signal acquisition is finished, the satellite original data captured by the RTK combined inertial navigation mobile station control software is subjected to original data conversion, GNSS resolving, GPS/INS resolving and smoothing processing to generate positioning result data, and the positioning result data is transmitted and guided into a navigation signal acquisition playback instrument through an RS232 serial port;
the tested 5G mobile communication terminal receives the GNSS satellite signal feedback positioning result sent by the navigation signal acquisition playback instrument and feeds the positioning result to the control terminal server;
the control terminal server extracts the high-precision position calibration information recorded in the navigation signal acquisition playback instrument through the data transmission link, after test scene parameters are configured, the test scene is played, the position and speed information reported by the 5G mobile communication terminal to be tested is compared with the previously recorded high-precision position calibration information, and a test result and a report are generated.
2. The 5G mobile communication terminal positioning performance high-precision virtual drive test method based on the 5G mobile communication terminal positioning performance high-precision virtual drive test system of claim 1, comprising the following steps:
step one, an RTK base station receives a satellite signal through an antenna;
secondly, the RTK combined inertial navigation mobile station continuously receives information sent by an RTK reference station through a mobile network on a preset drive test moving path, corrects the positioning accuracy through calculation, and outputs a positioning result to a navigation signal acquisition playback instrument through format conversion;
thirdly, the navigation signal acquisition playback instrument and the RTK combined inertial navigation mobile station synchronously receive the satellite signals on the road test moving path through the antenna, and obtain the accurate positioning result output by the RTK combined inertial navigation mobile station to complete the signal acquisition process;
step four, the navigation signal acquisition playback instrument sends the navigation signals acquired in advance to the tested 5G mobile communication terminal;
step five, after the tested 5G mobile communication terminal receives the satellite signal sent by the navigation signal acquisition playback instrument, feeding back a positioning result to the control terminal server;
and step six, the control terminal server extracts the positioning information in the navigation signal acquisition playback instrument, compares the positioning information with the positioning information fed back by the 5G mobile communication terminal to be tested, and judges the positioning performance of the 5G mobile communication terminal.
3. The system or method for 5G mobile communication terminal positioning performance high-precision virtual drive test according to claim 1 or 2, characterized in that: the GNSS satellite signals received by the RTK reference station include pseudo-range observations and phase observations.
4. The system or method for 5G mobile communication terminal positioning performance high-precision virtual drive test according to claim 1 or 2, characterized in that: the common error correction quantity comprises atmospheric time delay and a star clock error.
5. The system or method for 5G mobile communication terminal positioning performance high-precision virtual drive test according to claim 1 or 2, characterized in that: and the positioning result data is transmitted and led into the navigation signal acquisition playback instrument through an RS232 serial port in a standard NMEA0183 format.
6. The system or method for 5G mobile communication terminal positioning performance high-precision virtual drive test according to claim 1 or 2, characterized in that: the 5G mobile communication terminal is a 5G smart phone.
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| CN113687391A (en) * | 2021-09-13 | 2021-11-23 | 中国信息通信研究院 | Method and device for rapidly testing satellite navigation positioning performance of wireless terminal |
| CN114578392A (en) * | 2022-02-23 | 2022-06-03 | 南京市计量监督检测院 | Beidou terminal dynamic detection system compatible with data acquisition playback instrument |
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