Design And Realization Of Detection Device For Ultrashort Baseline Positioning System

Ultra-short baseline positioning system has been widely concerned because of its high precision and small array size.However,the development process of ultra-short baseline positioning system is difficult,long-period,multi-field test and so on,so the development speed is relatively slow.Based on the above situation,this paper proposes to develop a detection device for ultra-short baseline positioning system.In the process of positioning system,the performance test is carried out to provide effective guarantee for field test.The detection device includes the signal simulation software and the hardware signal detection circuit.The software is based on LabWindows/cvi development,which is used to simulate the test signal used in the test process,and the system is tested by DA data acquisition card output.The circuit is based on DSP development,and it is used to detect the ask-signal and response-signal.In this paper,the development of ultra-short baseline positioning system is introduced.According to the principle of ultrashort baseline positioning system,the basic method of system test and measurement is obtained.Through calculating the signal propagation delay and the signal amplitude,it can simulate the responder's signal.It completes the transponder test by simulating the transponder inquiry signal;and completes the positioning system calibration by outputting the calibration signal.Then it introduces the design and implementation process of each function module in the software development process.Thereal-time signal detection circuit isdeveloped basing on DSP 5509 A,and the circuit functions includes serial communication,data acquisition,low-pass filtering and other functions.It can detectthe positioning system transponder interrogation signal and response signal.Finally,this paper describes the comprehensive debugging of the system.After the comprehensive debugging,the ultra-short baseline positioning system detection devicecan runin good condition,and it can meet the design requirements.