Sparse vegetation height inversion method of polarimetric SAR interferometry
A height inversion and vegetation technology, which is applied in the field of signal processing, can solve the problems of reduced accuracy, low accuracy of sparse vegetation height inversion, ignoring the difference of interference phase, etc., and achieve the effect of improving accuracy, reducing difference and concentrating distribution
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[0025] The specific embodiments and effects of the present invention will be described in further detail below with reference to the accompanying drawings:
[0026] Reference figure 1 , Polarization Interferometric SAR sparse vegetation height retrieval method, including the following steps:
[0027] Step 1. Perform the phase correction of the flat-ground interference on the auxiliary polarized interferometric SAR image.
[0028] (1a) Estimate the flat-ground interference phase in the polarization interferometric SAR interferometric phase diagram:
[0029] Existing estimation methods include geometric method, frequency shift method, and geographic positioning method. In this embodiment, geometric method is used to obtain a flat-ground interferometric phase map A of the same size as the interferometric phase map. f , Where the flat-ground interference phase of each pixel φ flat for:
[0030]
[0031] In the formula, λ is the working wavelength of polarization interferometric SAR, R fl...
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