NEW DELHI - India on April 20 carried out the accelerated launch of its Risat-2, a military surveillance satellite built with help from Israel and carrying an Israeli synthetic-aperture radar.
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合成孔径成像是提高图像方位向分辨率的有效方法，但算法运算量大，在机载条件下往往实时性得不到保证。
The focused synthetic aperture imaging processing is the available method to improve the azimuth resolution, but the operational quantity is so large that it could not accomplish in real time.
These propagation rules of Gaussian beam limited by the aperture could promote the applications of Gaussian beam in the optical communication and the optical super resolution.
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