Analysis Of LPI Radar And Implementation Of Signal Processing In DSP

Low probability of interception (LPI) technique becomes significant to combat the threat of the ARM and electronic jamming. It has been an important indicator of radar whether it has LPI performance.On this background, the LPI technology and the factors influencing it are introduced in the dissertation first, and then the signal processing algorithm applied in the LFMICW system is analysed. We emphasize on the long-time coherent integration algorithm and give two improved versions with the application of the frequency agility signal.The project adopts frequency agility LFMICW signal, and accomplishes software work of the radar signal processing part on high-performance general signal processing board using ADSP-TS201S as the hardware platform for its high computation speed and input-output ability. Long-time coherent integration algorithm is adopted in the signal processing, which greatly improves the LPI performance of the radar. In the software design, parameter of system, the design requirement, distribution of assignment, the signal processing flow, analyse of the computation and storage are introduced mainly. The running results show that the signal processing system meets the requirements of radar system, and the main specifications meet the design requirements.