Method for automatically matching multisource space-borne SAR (Synthetic Aperture Radar) images based on RFM (Rational Function Model)
A reference image and image technology, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve problems such as increasing computational complexity, limiting detection of wrong matches, and poor matching reliability, to achieve solution Convenience, simple form, reliable and precisely matched effects
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings. An RFM model-based automatic multi-source spaceborne SAR image matching method, each step is described in detail as follows:
[0025] Step 1 RPC parameter calculation 1 of multi-source spaceborne SAR images:
[0026] Using a terrain-independent method (refer to "High Resolution Remote Sensing Satellite Application—Imaging Model, Processing Algorithm and Application Technology" by Zhang Yongsheng, Gong Danchao, etc.), using the strict geometric model of spaceborne SAR images, and generating them based on different elevation surfaces A dense and uniformly distributed virtual control grid, such as figure 1 As shown in , the RPC parameters of each image are obtained by using virtual control points to solve according to the principle of least squares.
[0027] Step 2 data preprocessing 2:
[0028] Step 2.1 Pyramid image generation: Use a practical and simple 3×3 ...
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