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We propose a frequency synchronization method for hybrid bi-static synthetic aperture radar (SAR), which denotes a SAR system with a spaceborne illuminator and an airborne receiver. Due to the high altitude difference, the method based on extracting the direct path signal is employed. The mathematical model to compute the frequency offset between the two sides' oscillators is given. Among the model,...
It is a key step to study and design the missile-borne SAR (Synthetic Aperture Radar) by the computer simulation. In this paper, we present a simulation and assessment software of the missile-borne SAR imaging system, which calculates the flight path of the missile, generates the echo data of the target, outputs the imaging result and its quality assessment. After dividing functional modules, we exhibit...
The impact of errors of the precalculated satellite overpass time and aircraft navigation system on some performance parameters, i.e. the footprint overlapping time, the scene extension in azimuth, the offset of the imaging scene, in spaceborne/airborne hybrid bistatic SAR (SA-BSAR) is analyzed. Several related formulae are derived and simulations were performed using parameters of TerraSAR-X as the...
This paper, the issue of achieving real 3D reconstruction of the 3D scene is discussed to avoid the height blur in the conventional 2D SAR imaging. By analyzing multiple pass (or antenna) system, the conclusion is drawn that the 3D system can be realized with two 2D imaging. The problem of aperture synthesizing in height direction is presented, while conventional SAR image can be obtained with existed...
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