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Seasat remote sensing observation data matching method and system

A technology of observation data and satellite remote sensing, applied in the field of remote sensing surveying and mapping, can solve the problem of large data processing amount, and achieve the effect of small calculation amount

Inactive Publication Date: 2013-11-13
NAT SATELLITE OCEAN APPL SERVICE
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AI Technical Summary

Problems solved by technology

[0006] To sum up, the star cross-matching technology in the related technology has a technical defect of a huge amount of data processing

Method used

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  • Seasat remote sensing observation data matching method and system
  • Seasat remote sensing observation data matching method and system

Examples

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Embodiment Construction

[0054] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0055] An embodiment of the present invention provides a method for matching ocean satellite remote sensing observation data, see figure 1 shown, including steps:

[0056] Step S110: Preset the time matching threshold, the spatial matching threshold and the matching time length, and divide the spherical surface of the earth into uniform virtual grids according to the latitude and longitude according to the spatial matching threshold.

[0057]Wherein, the temporal matching threshold and the spatial matching threshold are the reference basis for dividing the size of the grid, which can be specifically determined by those skilled in the art according to the actual situation, and the embodiments of the present invention do not list them one by one. Preferably, as an implementable manner, the time matching threshold is...

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Abstract

The invention relates to the technical field of remote sensing surveying and mapping, in particular to a seasat remote sensing observation data matching method and a seasat remote sensing observation data matching system. The method comprises the steps of setting a time match threshold value, a space match threshold value and a match time length in advance, and dividing the sphere face of the earth into uniform virtual reseaus according to longitude and latitude; inputting time, searching the remote sensing observation data in the match time length by taking the time as the index; and computing the reseaus corresponding to the remote sensing observation data, traversing each reseau according to the row sequence of the reseaus, and computing time difference of the remote sensing observation data of a first satellite and a second satellite, corresponding to the same reseau, judging whether the time difference is smaller than or equal to the time match threshold value or not, and finishing the match according to the judging result. The seasat remote sensing observation data match system comprises a networking module, an index module and a network match module. The seasat remote sensing observation data match method and the seasat remote sensing observation data matching system can greatly reduce the data processing amount and are higher in operation efficiency.

Description

technical field [0001] The invention relates to the technical field of remote sensing surveying and mapping, in particular to a method and system for matching marine satellite remote sensing observation data. Background technique [0002] The space-time matching technology of marine observation data refers to the technology of establishing a set of quasi-synchronous observation samples in time and space through time and space matching for two or more types of ocean observation data at a certain time and space threshold. [0003] This technology is widely used in geophysical model modeling (scatterometer), calibration, authenticity verification and other fields of ocean remote sensing. Taking the authenticity test as an example, all marine remote sensing satellites currently in commercial operation need authenticity test before distributing data products to users. The general process is to use on-site observation data (or satellite remote sensing Data) as the benchmark, by c...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 邹巨洪林明森邹斌郭茂华
Owner NAT SATELLITE OCEAN APPL SERVICE
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