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In the general bistatic SAR (GBiSAR) for imaging of fluctuant terrains, e.g., hilly or mountainous areas, the diverse platform’s types and various geometric configurations of the GBiSAR system lead to a 3-D spatial variance with complicated couplings and significant variation in its frequency-domain matching filter (FDMF) kernel, which brings great challenges to the conventional frequency-domain (FD)...
In this paper, a generalized frequency domain imaging algorithm is proposed for focusing data from the bistatic SAR (BSAR) with arbitrary geometry configurations. The proposed algorithm is derived from the ideal frequency-domain spectrum of arbitrary BSAR, which is achieved from the method of the series reversion (MSR). By implementing the 2-D linear regression, the process of the ideal frequency...
In this paper, a frequency domain imaging algorithm is proposed for the spaceborne/airborne bistatic synthetic aperture radar (SA-BSAR) with highly squint angle. The imaging processing is carried out with the following two stages. In the first stage, the space-invariant part of the raw spectrum data is compensated by multiplying with the conjugate of the spectrum from the reference target. In the...
Focusing bistatic SAR data in frequency domain requires the two dimensional (2D) point target reference spectrum (PTRS). In this paper, a 2D PTRS is derived based on Loffeld's bistatic formula (LBF). The spectrum in this paper combines the influence of the Doppler centroids and frequency modulated rates of the transmitter and receiver on the total Doppler contributions. The essential of this paper...
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