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GPS module test system

A technology of GPS module and test system, which is applied in the direction of radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., can solve the problems of long test time, high test cost, large space occupied by the test system, etc., and achieve accurate The effect of high precision and improved accuracy

Pending Publication Date: 2021-07-13
杭州永谐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the GPS module test system needs to build more black boxes (each satellite positioning signal simulator must correspond to a black box), so as to ensure that the GPS module will not receive GPS simulation signals emitted by other satellite positioning signal simulators, and the test system occupies The site is larger, the test cost is higher and the test time is longer

Method used

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  • GPS module test system
  • GPS module test system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a GPS module testing system includes a server 300 and several satellite positioning signal simulators 100. The server 300 communicates with the satellite positioning signal simulator 100, and each of the satellite positioning signal simulators 100 has a characteristic number ;

[0031] Such as figure 2 As shown, the satellite positioning signal simulator 100 is configured with a signal encryption strategy 110 and a signal transmission strategy 120;

[0032] The signal encryption strategy 110, before the GPS simulation signal is sent, the GPS simulation signal is encrypted to obtain an encrypted simulation signal;

[0033] The signal sending strategy 120 sends the encrypted simulation signal to the GPS module to be tested, and sends the address and the feature number of the satellite positioning signal simulator 100 to the server 300;

[0034] Such as figure 2 As shown, the server 300 stores a decryption information database 310, the decr...

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Abstract

The invention discloses a GPS module test system, which comprises a server and a plurality of satellite positioning signal simulators, and the server communicates with the satellite positioning signal simulators. By encrypting and decrypting the simulation signal, the tested GPS module can only identify the simulation signal sent by the corresponding satellite positioning signal simulator, so that the advantages that the received tested signal almost has no noise and the testing accuracy is high are achieved. The method does not need a darkroom occupying a large area, and is low in operation difficulty and high in operation speed. The positioning reference information is generated by the address of the satellite positioning signal simulator, and the positioning reference information can be considered to have no error, so that the accuracy of the finally measured GPS positioning is far higher than that of the prior art.

Description

technical field [0001] The invention relates to the technical field of GPS module performance testing, in particular to a GPS module testing system. Background technique [0002] The Global Positioning System (Global Position System, GPS) is a technology for precise coordinate positioning of vehicles, ships and other objects. Some electronic devices, such as personal digital assistants (PDAs), computers, mobile phones, watches, etc., are equipped with miniature GPS modules to allow users to navigate anytime and anywhere through these electronic devices. The GPS module includes the antenna part, radio frequency, analog-to-digital converter (AnalogtoDigitalConverter, ADC) and temporary data storage space. After the antenna receives the weak signal transmitted by the GPS satellite, it amplifies the signal to an appropriate level through the radio frequency component; then lowers the frequency to Intermediate frequency (IF) or baseband (Baseband); then the ADC component convert...

Claims

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 马长春黄东明
Owner 杭州永谐科技有限公司
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