Method for inversion of ocean surface wind direction through navigation radar images on basis of self-adaptation diminishing operator
A technology of navigation radar and sea surface wind direction, which is applied in ICT adaptation, radio wave reflection/re-radiation, and utilization of re-radiation, etc. It can solve the problem that local gradient methods are difficult to meet engineering requirements, and it is difficult to find proportional resolution and sea surface wind direction. Accuracy reduction and other issues
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[0095] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0096] A method for inverting sea surface wind direction based on an adaptive reduction operator for a navigation radar image of the present invention comprises the following steps:
[0097]Step 1, navigation radar image sequence acquisition. A set of navigation radar image sequences is collected, and the navigation radar image sequence contains N pieces of navigation radar images, and the actual wind direction and wind speed values corresponding to the time and position are collected at the same time.
[0098] Step 2, navigation radar image preprocessing. Median filtering is performed on the navigation radar image in the navigation radar image sequence to suppress the interference of the same-frequency signal on the sea surface wind direction inversion.
[0099] Step 3, sea surface static feature image extraction. Azimuth normalization is performed on t...
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