Design and Realization of Automatic Test System for Anti-Jamming Performance of GNSS Receivers

Abstract

Abstract The performance test is a key part of the anti-jamming the global navigation satellite system (GNSS) receivers in researching and production. To solve the big workload and cumbersome in performance tests, an automatic test system is proposed in this paper. This system, whose core part is software which designs in Microsoft Visual Studio, can automatically control jammer, holder and anti-jamming antenna. The test software can automatically receive data from the navigation receiver and the anti-jamming antenna, can automatically statistics the carrier to noise ratio (CNR) and position information, also can automatically monitor the jam to signal ratio (JSR) in real time. Taking the CNR and the position information as anti-jamming performance test indicators, the software can automatically control the radio frequency (RF) power of jammer by setting the start, stop and step values of the jammer power. The test result shows that it can realize the automatic test after setting the necessary parameter. Also, it can automatically generate test report after completing the test. This system improves the efficiency of the anti-jamming performance test of GNSS receivers.