Effectiveness of Pulse Compression Signal Processing Techniques of Radar

Radar Signal Processing is a very important aspect of Radar systems. Pulse Compression Technique is a Signal Processing Technique used in Radar systems to avail the benefits of large range detection capability of long duration pulse and high range resolution capability of short duration pulse. But at the output of Pulse Compression filter, sidelobes are present and these unwanted outputs may mask a weaker target which is present nearer to a stronger target. Hence, these sidelobes affect the performance of the Radar detection system. In this paper, focus is given on which technique achieves less number of sidelobes, narrow mainlobe width, better range resolution and low Peak Sidelobe Level (PSL) under various Doppler shift, multiple target environment and noise conditions,. For these purposes, the three very important Radar Pulse Compression techniques, Polyphase, Biphase and Linear Frequency Modulated (LFM) Codes are discussed in detail. Simulations are carried out to know the effectiveness of the Codes used in the Pulse Compression Signal Processing Techniques of Radar.