Pseudo-random Code Keying The Gauge Signal Processing Technology

Radio technology is given from the modulated electromagnetic waves emitted by the detection target, which receives echo signals reflected by the antenna, after a series of signal processing and speed information obtained from the target. This paper describes a pseudo-random code keying fixed pitch signal processing technology, the transmit signal frequency hopping according to the law of the pseudo-random code, and thus has a wide signal bandwidth and greater signal processing gain, in terms of anti-jamming performance there are a lot of advantages, is a relatively broad prospects for fixed pitch system.Paper introduces the theory of pseudo-random code, and then set the principle that the IF signal processing technology and low-frequency signal processing techniques in two different ways from the beginning of the analysis process technology, verify its correctness by mathematical derivation from the pseudo-random code keying and in the MATLAB Simulink simulation platform environments to build the module, and the theoretical results are compared to a conclusion.On this basis, the paper select the low-frequency signal processing technology, distance and speed for a given signal processing algorithms in depth, according to the system requirements, software design using Altium signal processing circuit, and complete drawing PCB circuit board.Finally, based on the low-frequency signal processing techniques to write Verilog procedures, hardware emulation, and FPGA implementations, the basic completion of the speed function, to get a more satisfactory result.