Xiong Jintao

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Time-frequency rate distribution (TFRD) indicates the characteristics of instantaneous frequency rate (IFR) of a signal. This paper proposed a method based on time-frequency rate distribution to estimate Doppler frequency rate by analyzing the linear frequency-modulated (LFM) characteristics of synthetic aperture radar (SAR) echo in the azimuth direction.(More)
The parallel flight squint mode of airborne bistatic synthetic aperture radar (SAR) is discussed in this paper. The bistatic squint imaging mode (SIM) algorithm is used to solve the coupling between the range and the azimuth of this mode. Simulation results prove the availability of this algorithm. The bistatic SIM algorithm is also used to process the(More)
A complete method of synchronization technology of bistatic radar using global position system (GPS) is presented. The time benchmark signal 1PPS was elaborately modified in order to increase the time synchronization precision. A very high time synchronization precision was achieved. Using the modified 1PPS to discipline the local VCXO, the reference(More)
In this paper, a bistatic SAR echo's mathematical expression with frequency errors is given, and the frequency error was analysed. Two types of frequency synchronization errors were considered. We analysed the different effects about imaging of bistatic SAR in the condition that the echo with different frequency errors. The analytical result is proved by(More)
In this paper, a novel fast backprojection (BP) algorithm for stripmap bistatic SAR is presented. This algorithm gets improvements from the perspective of beam form and the space relation between the flight path and the mapping areas. Comparing with the traditional BP algorithm, the fast BP algorithm has higher computational efficiency. Also, it keeps the(More)
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