New 2-D spectrum of BiSAR from the instantaneous Doppler frequency and a showcase for image algorithm

作者：Xiong Tao^*; Zhou Song; Xing Meng Dao

来源：Journal of Electronics and Information Technology, 2012, 34(8): 1840-1846.

DOI：10.3724/SP.J.1146.2011.01044

• 2-D spectrum
• Bistatic SAR
• Bistatic synthetic aperture radar
• Doppler frequency
• Frequency domains
• Image algorithms
• Imaging geometry
• Range-Doppler algorithm
• Return signals
• Simulated data
• Translational variant

A novel method to obtain the formulations of the return signals in the two dimensional (2-D) frequency domain for translational variant Bistatic Synthetic Aperture Radar (BiSAR) is proposed. In this study, the instantaneous Doppler frequency is used and two individual azimuth frequencies are introduced, so that the 2-D spectrum can be derived by these two azimuth frequencies. Using the imaging geometry of the general bistatic SAR, the expressions of the two azimuth frequencies can be obtained, as well as the 2-D spectrum. Then, the range Doppler algorithm based on the two 2-D spectrums is developed to process the spotlight general BiSAR data. Finally, the proposed algorithms are applied to the simulated data and the results confirm not only the accuracy of the derived 2-D spectrums for general BiSAR but also the effectiveness of the proposed algorithm.

• 出版日期2012
• 单位西安电子科技大学