At present,the application of emergency call system(eCall)in vehicles is increasingly extensive,especially for the vehicle models exported overseas,which usually require eCall certification testing.This article conducts a method study on the certification testing of eCall system in the complex electromagnetic environment formed by special testing sites.The optimization is carried out through the replacement of test equipment,the selection of test system and the arrangement of the test site.The test results show that the optimized testing plan greatly improves the quality and stability of cellular signals,shortens the vehicle debugging time before testing,and improves the overall testing efficiency.
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