GPS Signal Acquisition and Processing Test System Based on Smart Antenna
|School||Huazhong University of Science and Technology|
|Course||Electromagnetic Field and Microwave Technology|
|Keywords||Smart Antenna Anti-jamming GPS software receiver Data Acquisition LabVIEW|
With GPS more widely used in military and civilian fields，the problem of it’s pooranti-jamming ability is getting worse. Due to the influence of interference, GPS receiverperformance becomes unstable or even completely ineffective. To make GPS receiverswhich in the interference environment work properly, research an anti-jamming GPSsystem is imperative.On the basis of expounding the basic theory of GPS and the currently usedanti-jamming methods, this dissertation analysis the technical requirements of thereceiving system based on the power inversion algorithm, combined with the basictheoretical knowledge of software radio, this dissertation works on the design a GPS smartantenna signal acquisition processing test system, the overall hardware structure of textsystem including antennas, microwave networks, NI acquisition equipment, software partof the test system including digital signal processing unit based on the LabVIEW platformand GPS software receiver. The whole system focus on the realization of the test systemsoftware part At last the dissertation verify function of the system, the system is fullyfunctional to meet the requirements.In summary, based on the theory of software radio-based combine with GPSpositioning principles the dissertation finished the design and implementation of a GPSsmart antenna signal acquisition and processing test system.