Split type corner reflector of synthetic aperture radar for interference remote sensing

Abstract

The invention relates to a split type corner reflector of a synthetic aperture radar for interference remote sensing. The split type corner reflector comprises a triangular pyramid corner reflector (1) which is formed by connecting three pieces of same isosceles right-angled triangle aluminium plates and has a right-angled apex angle, wherein one piece of aluminium plate is used as a base plate (101), and the other pieces of aluminium plates are used as side plates (102 and 103); the split type corner reflector is characterized in that the bottom surface of the base plate is connected with a supporting plate (2) by a connecting rod; the sloping side of the base plate (101) upwarps so that the base plate (101) and the supporting plate (2) have an angle elevation of 10-30 degrees; a fixed support (4) is connected under a fixed plate (3); a connecting piece (301) is arranged on the fixed plate (3); and the supporting plate (2) is provided with a connecting hole (302) which is adaptive with the connecting piece (301). The corner reflector has the advantages of small occupied space, less space required, strong concealment, low manufacturing cost and the like, is convenient to use and easy to maintain and does not interfere agricultural production and transportation.

Description

technical field [0001] The invention relates to a split corner reflector for synthetic aperture radar interference remote sensing. Background technique [0002] The satellite synthetic aperture radar differential interferometric remote sensing technology (Interferometric Synthetic Aperture Radar, InSAR) based on phase information processing obtains a synthetic aperture (SAR) radar image with phase information by transmitting electromagnetic waves to ground targets and recording the echo signals scattered by ground targets. And through differential interferometry (DInSAR) to detect large-scale regional surface deformation, with its high deformation sensitivity, high spatial resolution and technical characteristics based on surface observation, it greatly compensates those geodetic methods based on point observation (such as triangulation / edge measurement) , GPS, and leveling) are limited by the low spatial resolution. However, the application of differential interferometry i...

AI Technical Summary

Problems solved by technology

[0005] (1) Difficult to deploy points

Because its concrete base protrudes from the ground, and the corner reflectors are embedded in it, it covers a large area, takes up a large space, and has a great impact on agricultural production and transportation

If the selected location of the corner reflector is located in a place where free land resources are scarce, it may cause the base to not be built at the selected location

[0006] (2) High production cost

[0007] (3) Complex production

[0008] (4) Difficult to protect

Corner reflectors are made of a lot of metal materials, which are easy to be stolen if they are placed in the wild for a long time

Also, once the base is destroyed, the attitude of the reflector will be affected

For this reason, it is necessary to specially build a yard for protection in places that are easy to be stolen or damaged, and the cost is very high, and the protection cost is much higher than the cost of the reflector.

[0009] (5) The attitude of the reflector is not easy to control

The installation and construction process of the reflector is mainly completed by workers. Although there are professionals to direct, construction errors are inevitable, and this method is prone to large attitude errors, which will affect the reflection effect of radar waves.

[0010] (6) Easily affected by the natural environment and difficult to maintain

The fixed corner reflector is placed in the field all the year round, and it is easy to rust, accumulate water, snow or be filled with debris due to the influence of climate and weather, which seriously affects the scattering of radar waves

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