Method for selecting test data length of navigation terminal based on wheel difference method

Abstract

The invention discloses a method for selecting test data length of a navigation terminal based on a wheel difference method. The method comprises the following steps of: step 1, selecting the corresponding test equipment according to a determined general test scene to test the preset time of the navigation terminal, and then obtaining sample data; step 2, selecting the test data length of the sample data based on the wheel difference method. According to the method, based on the wheel difference method, the test length is selected aiming at the index test of the navigation terminal, and the selected length is used for the same index test of the same navigation terminals; compared with the traditional test methods, the test data length is greatly reduced while the test effectiveness is met, and the cost-benefit ratio of the test is greatly improved aiming at the test of batches of the navigation terminals.

Description

technical field [0001] The invention belongs to the technical field of navigation terminal testing, in particular to a method for selecting the length of navigation terminal test data based on a wheel difference method. Background technique [0002] In the process of testing the navigation terminal, whether using an analog signal generator for signal simulation or using other methods such as received real satellite signals for testing, it is necessary to determine the length of the satellite signal. Traditional navigation terminal indicator testing methods generally believe that the longer the test data obtained, the more conducive to the analysis and processing of indicators. For commonly used precision indicators, such as timing accuracy, we are used to obtaining 24 hours or even longer data for analysis, which will undoubtedly greatly reduce the test efficiency and increase the test cost; for batch test terminals, if we use this principle to test, The cost-effectiveness ...

AI Technical Summary

Problems solved by technology

In short, if the amount of data is too large, it will increase the amount of calculation in the test process and increase unnecessary costs

[0003] In addition, in the actual test, in order to save test time, the testers often test the indicators for too short a time. Based on the consideration of test effectiveness, if the data is too short, it is difficult to reflect the statistical characteristics of the navigation terminal, resulting in low accuracy of the test results.

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