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Receiver RTK precision test method and terminal

A test method and a technology for testing terminals, which are applied in measuring devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems of small R&D investment and raise the threshold of signal simulators, so as to reduce R&D investment and lower the threshold , The effect of reducing the cost of testing

Inactive Publication Date: 2020-01-10
MINJIANG UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most small and medium-sized enterprises and practitioners engaged in receiver hardware and software research and development, the signal simulator is not only a large investment in research and development, but also raises the threshold for entering the field of receiver-related technology research and development

Method used

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  • Receiver RTK precision test method and terminal
  • Receiver RTK precision test method and terminal
  • Receiver RTK precision test method and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Please refer to figure 1 , a test method for receiver RTK accuracy, comprising steps:

[0094] S1. Install a base station receiver, and determine the precise location of the base station receiver;

[0095] For the test requirements of RTK positioning, install the base station receiver and antenna under the observation conditions that are far away from high-power radio transmission sources, far away from high-voltage transmission lines, and there are no objects that emit strong satellite signals nearby, and there are no obstacles at the point of view at an elevation angle of 15° or more. , as a specific scenario, for the airborne RTK positioning test of small UAVs, the base station receiver and antenna are placed on the track and field about 100 meters south of the Guangcheng Building of Minjiang University. The base station receiver and antenna are high-performance measurement type, capable of supporting multi-frequency and multi-system satellite data collection;

[0...

Embodiment 2

[0145] Apply the above test method to a specific scene, and choose to conduct a small UAV airborne experiment on the track and field field south of Minjiang University, where the UAV flying speed is 8m / s, the flying height is about 80 meters, and the flight time About 20 minutes.

[0146] The precise location of the base station is known during the test, and the distance between the base station and the mobile station is better than 300 meters. The base station receiver supports multi-frequency and multi-mode data collection and transmission. On the small UAV, a single-frequency receiver under test and a multi-frequency receiver for comparison are connected to the same helical antenna through a power divider. During RTK processing, the single-frequency receiver under test uses GPS L1 and BDS B1 observations to perform dynamic RTK calculations, and saves the observations and calculation results. Compared with multi-frequency receivers using GPS L1 / L2+B1 / B2+GLONASS L1 / The L2 o...

Embodiment 3

[0153] Please refer to figure 2 A test terminal 1 for RTK accuracy of a single-frequency receiver, comprising a memory 2, a processor 3 and a computer program stored on the memory 2 and operable on the processor 3, the processor 3 executing the computer The program realizes each step in the first embodiment.

[0154] To sum up, the present invention provides a receiver RTK accuracy test method and terminal. The receiver to be tested and the comparison receiver are installed on the same moving carrier at the same time, and the differential signals sent from the base station receiver at the precise position are The data is forwarded to the receiver under test and the comparison receiver, so that they perform RTK calculation according to the differential data to obtain the corresponding positioning results, and then the test can be performed by comparing the positioning results of the receiver under test and the comparison receiver. measure the RTK accuracy of the receiver; after...

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Abstract

The invention provides a receiver RTK precision test method and a terminal. A to-be-tested receiver and a contrast receiver are simultaneously mounted on a moving carrier; a differential data transmitted from a base station receiver at the precise location is forwarded to the to-be-tested receiver and the contrast receiver separately to enable the to-be-tested receiver and the contrast receiver toperform RTK resolving according to the differential data to obtain corresponding positioning results; and next, the RTK precision of the to-be-tested receiver can be tested by comparing the positioning results of the to-be-tested receiver and the contrast receiver, the test can be completed only by selecting one tested high-performance contrast receiver, and the test cost can be lowered to the greatest extent; and in addition, testing can be carried out in a real dynamic environment, and research and analysis can be carried out according to the actually received satellite signals and the stored data of the receiver, so that the research and development investment of medium and small enterprises can be reduced, and the threshold of the research and development field of the receiver relatedtechnology can be lowered.

Description

technical field [0001] The invention relates to the field of positioning accuracy testing, in particular to a receiver RTK accuracy testing method and a terminal. Background technique [0002] Real-time Kinematic (RTK) technology is a real-time dynamic positioning technology based on carrier phase observations. Because of its centimeter-level positioning accuracy, it is widely used in engineering stakeout, topographic mapping, aerial photogrammetry, and precision navigation. During the real-time positioning accuracy test, because the carrier on which the receiver is installed (such as a car, ship, aircraft, etc.) is in motion, it is difficult to obtain the real trajectory of the moving carrier and the precise position of each epoch on the trajectory. Therefore, the RTK positioning Accuracy testing has always attracted people's attention. [0003] In the hardware and software development process of the GNSS (Global Navigation Satellite System, GNSS) receiver, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 樊春明管庆林黄楠
Owner MINJIANG UNIV
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