Abstract:
Multichannel parameter estimation is a key technology for azimuth multichannel terrain observation by progressive scans synthetic aperture radar (MC TOPS SAR) systems. No...Show MoreMetadata
Abstract:
Multichannel parameter estimation is a key technology for azimuth multichannel terrain observation by progressive scans synthetic aperture radar (MC TOPS SAR) systems. Normally, for the traditional multichannel parameter estimation algorithms, the mismatch parameters are concluded as phase error, baseline error, and Doppler centroid. The beam rotation speed error is ignored. However, for MC TOPS SAR, beam rotation speed error will degrade the reconstruction performance of the Doppler spectrum. Moreover, only part of the mismatch parameters can be estimated for the traditional algorithms. To address those problems, a joint parameters estimation algorithm for TOPS SAR based on spatial time cross correlation coefficient (STCCC) is proposed. Combined with phase wrapping and the least-squares method (LSM), the algorithm is capable of realizing a joint parameters estimation of channel consistency error, azimuth baseline error, Doppler centroid frequency, and beam rotation speed estimation without iteration. The real data processing result shows that the method can effectively realize MC TOPS SAR data error estimation.
Published in: IEEE Geoscience and Remote Sensing Letters ( Volume: 20)
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- IEEE Keywords
- Index Terms
- Parameter Estimates ,
- Joint Parameter ,
- Single-channel Synthetic Aperture Radar ,
- Azimuth Multichannel ,
- Data Processing ,
- Least-squares ,
- Cross-correlation ,
- Rotational Speed ,
- Estimation Algorithm ,
- Synthetic Aperture Radar ,
- Phase Error ,
- Partial Parameters ,
- Phase Unwrapping ,
- Parameter Mismatch ,
- Parameter Estimation Algorithm ,
- Doppler Spectrum ,
- Estimation Results ,
- Imaging Results ,
- Unknown Parameters ,
- Red Circles ,
- Multichannel System ,
- Reference Channel ,
- Error Parameters ,
- Steering Vector ,
- Doppler Frequency ,
- Antenna Pattern ,
- Relativistic Beam ,
- Spectral Entropy ,
- Process Flow ,
- Slant Range
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Parameter Estimates ,
- Joint Parameter ,
- Single-channel Synthetic Aperture Radar ,
- Azimuth Multichannel ,
- Data Processing ,
- Least-squares ,
- Cross-correlation ,
- Rotational Speed ,
- Estimation Algorithm ,
- Synthetic Aperture Radar ,
- Phase Error ,
- Partial Parameters ,
- Phase Unwrapping ,
- Parameter Mismatch ,
- Parameter Estimation Algorithm ,
- Doppler Spectrum ,
- Estimation Results ,
- Imaging Results ,
- Unknown Parameters ,
- Red Circles ,
- Multichannel System ,
- Reference Channel ,
- Error Parameters ,
- Steering Vector ,
- Doppler Frequency ,
- Antenna Pattern ,
- Relativistic Beam ,
- Spectral Entropy ,
- Process Flow ,
- Slant Range
- Author Keywords