Research on and Application of the Techniques of Digital IF and Pulse Compression in Radar
|School||Xi'an University of Electronic Science and Technology|
|Course||Electronics and Information Engineering|
|Keywords||IF sampling Quadrature coherent detection Joint coherent detection method Pulse compression Field Programmable Gate Array|
Quadrature coherent detection complex envelope retains all the information of the signal , and thus get a wide range of applications in signal processing in the frequency domain , under the conditions of high data sampling rates, especially for large -bandwidth product , pulse compression can significantly reduce the computation amount . In this paper, a phase parameter main vibration enlarge search radar developed requirements , compare quadrature coherent detection techniques to realize - Hilbert filtering , interpolation , low-pass filtering method for practical application , combined with coherent detection method . Chirp compression principle . Finally, based on the practical application of the IF sampling and pulse compression design , and design simulation with Matlab , verify the rationality of the design by using field-programmable gate array (FPGA) and digital processor (DSP) to achieve the hardware .