Azimuth spectrum reconstruction algorithm for multichannel squint SAR on high speed airborne platform
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021•ieeexplore.ieee.org
When airborne radar platforms have a hypersonic speed, the Doppler bandwidth will be
several hundred times of that from the low speed platforms. There are contradictions
between pulse repeat frequency (PRF), Doppler ambiguity and range swath during the
system parameters design. Azimuth multichannel technique is applied to make the PRF
lower and can get a wide range swath. The equivalent phase center (EPC) under high
squint (HS) mode is calculated. Then the Doppler spectrum is reconstructed by spatial …
several hundred times of that from the low speed platforms. There are contradictions
between pulse repeat frequency (PRF), Doppler ambiguity and range swath during the
system parameters design. Azimuth multichannel technique is applied to make the PRF
lower and can get a wide range swath. The equivalent phase center (EPC) under high
squint (HS) mode is calculated. Then the Doppler spectrum is reconstructed by spatial …
When airborne radar platforms have a hypersonic speed, the Doppler bandwidth will be several hundred times of that from the low speed platforms. There are contradictions between pulse repeat frequency (PRF), Doppler ambiguity and range swath during the system parameters design. Azimuth multichannel technique is applied to make the PRF lower and can get a wide range swath. The equivalent phase center (EPC) under high squint (HS) mode is calculated. Then the Doppler spectrum is reconstructed by spatial filtering method with azimuth dependent channel compensation.
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