Satellite time service machine and navigation receiver testing station

Abstract

The invention relates to a satellite time service machine and navigation receiver testing station, which comprises a testing control computer, wherein the testing control computer is connected with an oscilloscope through a USB (Universal Serial Bus)-GPTB (General Purpose Interface Bus) interface, and is connected with a tested receiver through a first USB-RS422 circuit; the testing control computer is connected with the control end of a relay module through a second USB-RS422 circuit, and is used for controlling the output state of the relay module and providing a power supply channel for the tested receiver; navigation data demodulated by the tested receiver are transmitted to the testing control computer through the first USB-RS422 circuit; the oscilloscope is used for comparing a 1PPS time service signal input from a port A and a standard 1PPS signal input from a port B at the frequency of one every second; the oscilloscope is used for transmitting the measured data to the testing control computer for processing through a USB-GPIB adapting wire; testing of multiple indexes of the product is finished by controlling the oscilloscope and each module through the testing computer, and data are recorded. The satellite time service machine and navigation receiver testing station has the beneficial effects that the testing time is saved, more useful data are read, the measured data are displayed in the forms of a trend curve graph and a statistical histogram in real time, and the data are accurate.

Description

technical field [0001] The invention relates to the field of production and testing of electronic products, in particular to a satellite service timing and a satellite navigation receiver testing station. Background technique [0002] The timing of satellite delivery is the time reference in many fields of communication, navigation, and radar. During the development and production process, 1PPS second pulse, cold start time of power-on, and positioning accuracy are all indicators that need to be evaluated for satellite delivery timing and navigation receivers. But because the above-mentioned signals need to appear once every second, the researchers cannot keep up with the signal changes by manually measuring and recording. For example: 1PPS second pulse measurement can only use the oscilloscope to compare with the standard second pulse at this stage, and judge whether the error of the second pulse exceeds the specified range according to the afterglow trace displayed by...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to solve the difficulties existing in the development and production of satellite timing and satellite navigation receivers at the present stage, and to provide a design scheme for developing satellite timing and satellite navigation receiver universal test stations , through the present invention to provide scientific research personnel with accurate measurement data, in order to more accurately find out where the problems occurred in the product development process, and at the same time, archive and backup the measurement data of the instrument during the trial production process, so as to accumulate experience for future product development

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