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Distributed array radar is a significant radar system, which can not only improve radar detection capability and measurement accuracy, but also suppress mainlobe interference effectively. However, due to its equivalent large aperture, the plane wave assumption fails. What's worse, target signals arriving at each array may have the envelope migration problem, thus the traditional adaptive beamforming...
In recent years, the repeat-pass GBSAR (ground based synthetic aperture radar) system has demonstrated its capacity to acquire deformation. Nevertheless, in a variety of applications, it needs to measure the deformation with the precision up to 0.1 mm, which could not be reached by utilizing the traditional PS (permanent scatterer) algorithm in most cases. Generally, one of the main reasons could...
We present a theoretical analysis for InSAR height measurement in sand-covered arid areas based on two-layer model. The influence of radar wave's penetration on height estimation is mainly considered. If the returned signal from the subsurface is dominant, InSAR is potential to measure the subsurface height. Taking the refraction at the interface and the change of propagation velocity in the sand...
The distributed coherent aperture radar consists of several cooperating small aperture radars and a control center, which is proposed as a new technology to replace traditional large aperture radars for the next generation radar. The coherent performance of distributed coherent aperture radar is mainly affected by time synchronization. However, current time synchronization technology could not meet...
This paper presents a real-time echo simulator for natural scene. The simulator generates SAR echo according to the radar flight trace in real time. The key technique of the echo simulator is presented first and the experiment result is shown. This simulator has been used as a general purpose verification platform for SAR real-time imaging system.
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