A Coherent Integration Process Performed at Sub-Pulse Level for Interpulse-Intrapulse Joint Frequency Agility Waveform

With the advancement of waveform generator technology, waveform design has become an active anti-jamming method where frequency agility is a primary approach. While frequency agility serves to enhance the performance of the radar, it concomitantly increases the difficulty of signal processing. Focus on the problem of coherent integration in interpulse-intrapulse joint frequency agility waveform, a novel process performed at the sub-pulse level is proposed, which is based on modified non-uniform discrete Fourier transform. In addition, velocity estimation waveform design is introduced to solve the range cell migration and velocity blurring. Simulations illustrate that this process has a good performance on moving target.