Procedures for radar measurements on urban area and landslide movements.

摘要

(57) Abstract Topic The urban district territory which features that N-1 for the identical picture (master) making use of the standard digital high-level model (DEM) which possesses the vertical precision being better than 50 meters, you analyze the finite difference interference image, identify the permanent scatterer and the procedure regarding the radar measurement of motion of landslide zone. SolutionsInterferometer phase the series is drawn up temporarily concerning each pixel of the picture which is selected on the basis of the statistical character of reflectance ratio. Next, being attached difference between the series is formed slyly temporarily in the contiguity pixel (temporary finite difference series). Concerning each temporary finite difference series, in connection with the phase component which is connected to base line and the known displacement model, the linear phase component is calculated in regard to time. It connects with the linear phase component of the temporary finite difference series relative error with those which is obtained from the precision altitude and standard DEM of the pixel, in regard to base line. It connects relative motion of the pixel to the direction of SAR, in regard to the poly- nominal (polynominal) phase fluctuation and time of the temporary finite difference series. Phase remainder pulls the influence which was calculated with the step before and after the phase development procedure to on the dispersion grid, is drawn up by going away. Analyzing the spectrum density of phase remainder, when the remainder which is related to each single picture has correlated spatially, releasing in the man-made work in the atmosphere, it removes, when being larger than the threshold where the other remainders which are related to each single picture are appropriate, it abolishes the pixel of that.