Abstract:
In noncooperative bistatic synthetic aperture radar (SAR), the position of the transmitter's beam footprint should be detected and tracked in real time to perform beam sy...Show MoreMetadata
Abstract:
In noncooperative bistatic synthetic aperture radar (SAR), the position of the transmitter's beam footprint should be detected and tracked in real time to perform beam synchronization. Theoretical analysis shows that the signal-to-noise ratio (SNR) of the reflected signals from the observational scene is too low to apply the conventional detection and tracking method. According to the cross correlation and Doppler frequency information of the raw data, a transmitter's beam footprint detection and tracking method is proposed in this paper. This method can realize the beam footprint detection in the sidelobe of the receiver's beam footprint and obtain the relative position between the transmitter and the receiver, therefore significantly improve the performance of beam footprint detection and tracking in noncooperative. Meanwhile, vehicle-based bistatic SAR experiment and airborne bistatic SAR experiment are performed to evaluate the performance of the proposed transmitter's beam footprint detection and tracking method. Experimental results show that the proposed method performs well for real-time transmitter's beam footprint detection and tracking.
Published in: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( Volume: 10, Issue: 6, June 2017)