Remote sensing and quantizing reconnaissance method of snowslide
A remote sensing, high-resolution technology, used in the site selection and comparison of engineering plans, automatic extraction and quantitative analysis of avalanche disaster information, and optimization in the field, it can solve problems such as dependence and inability to meet engineering construction, and achieve high accuracy. , to achieve automatic extraction, comprehensive survey effect
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[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0028] A remote sensing quantitative survey method for avalanche, as shown in Figure 1, it includes the following steps:
[0029] The first step, multi-temporal high-resolution satellite stereo image / airborne LIDAR scanning data acquisition1
[0030] The survey area should select at least two different periods (two periods with less snow cover and more periods), and the resolution of satellite imaging is less than 1m high-resolution satellite stereoscopic images, such as IKONOS satellite images with a resolution of 1m, or The 0.47m WorldView satellite image can also be the image obtained by airborne LIDAR scanning with CCD camera in different periods.
[0031] High resolution satellite stereo imagery should have rational function sensor model (RPC) parameters. Airborne LIDAR data should have attitude positioning parameters such as GPS and IMU (inertial measurement u...
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