Simulation and Analysis of Staggered PRI Sequence for NISAR

NISAR (NASA ISRO Synthetic Aperture Radar) is a joint SAR mission between NASA and ISRO having the capability to image a wide swath at high resolution using the SweepSAR technique. Blind ranges are manifested while imaging wide swath because of the large receive data window in comparison to PRI (Pulse Repetition Interval). To uniformly distribute blind ranges across swath PRIs can be staggered. Staggered PRI sequences for the S-Band of NISAR have been simulated and analyzed. The efficacy of designed PRI sequences is established using point target response and the distribution of blind ranges across the swath.