Designed And Implementation Of The Receiver In A Single Passive Locating Base

This paper explores the receiver system of the project in a single passive locating base. First, the paper sets down the total precept of the receiver. The receiver system is composed of high-frequency receiver and broadband digital receiver. The two subsystems have been detailedly discussed in two parts of the paper.In chapter 3, the design and test of the high-frequency receiver have been presented. The channel of the high-frequency receiver mostly uses MMIC component. It can reduce the debugging work and the design cubage. And it can give the channels of the receiver consistent capability. The microwave designed soft ADS and Serenade are used to design the other pars of the high-frequency receiver.In chapter 4, the broadband digital receiver has been introduced. The design of it is composed of the hardware and the arithmetic. The broadband digital receiver measures the signal parameter in proper arithmetic which is working on the high-speed hardware. The arithmetic modules have four parts: digital orthogonal transform, cross correlation, measuring frequency, checking and controlling. The digital orthogonal transforming has a special arithmetic. It can get the digital signal orthogonal transform without the signal frequency. The different phase of two channels may be measured throughout the CORDIC arithmetic in the cross correlation module. And the PRONY arithmetic is used to measure the signal frequency. The checking and controlling arithmetic manages the others.In the end of the paper, the receiver system has been analyzed through the test inside and outside. Some methods are used to resolve the problems of the receiver. The outside experiment indicates that the receiver may measure the target when the receiver gets a good SNR. It can measure the signal frequency transmitted by the target, the target azimuth and distance.