Optical-sar common image resolution evaluation sector target

Abstract

The invention discloses a fan-shaped target for assessment on an optical-SAR (Specific Absorption Rate) shared image resolution. The fan-shaped target mainly comprises target strips, a target substrate, auxiliary facilities and the like, wherein the target strips are artificial materials which are in black or white in an optical or SAR image; the target substrate is served as a substrate on which black and white target strips so as to ensure that a target surface is flat and is convenient for long-term operation; the auxiliary facilities are auxiliary parts which assist the whole target to carry out the assessment on optical or SAR image resolution. The target provided by the invention has the beneficial effects of being capable of assessing the spatial resolution of either an optical or an SAR remote sensing load; furthermore, the geometrical shape of the target cannot be affected by rain, snow and frost, therefore the target is applicable to long-term use in the wild; in addition, the target is good in permeability, and the surface of the target is unlikely to generate water; meanwhile, the target is good in self-cleaning property, and dust on the surface of the target can be washed down by rain water; finally, the maintenance cost needed by normal operation can be reduced greatly.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a novel fan-shaped target for image resolution evaluation shared by optics and SAR. Background technique [0002] Remote sensing technology can obtain target electromagnetic radiation information dynamically on a large scale, realize efficient cognition of real physical properties of ground objects, and has broad application prospects in resources, surveying and mapping, meteorology, and military reconnaissance. With the gradual development of earth observation and remote sensing technology in the direction of satisfying quantitative applications, regular and regular monitoring of the dynamic changes in the performance of satellite loads during operation, accurate detection of the degree of change, accurate discovery of the cause of the change and the formulation of targeted remedial measures have been recognized domestically. extensive attention. [0003] Since the "Nint...

AI Technical Summary

Problems solved by technology

[0008] The invention provides an image resolution evaluation fan-shaped target shared by optics and SAR, which solves the problem in the prior art that the optical and SAR load resolution tests cannot be performed at the same time; the existing SAR fixed artificial target is in the form of linear black and white , can only evaluate the resolution of a specific resolution SAR image, and cannot perform continuous image resolution evaluation, etc.

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