Double-displacement-measurable corner reflector

Abstract

The invention discloses a double-displacement-measurable corner reflector. The double-displacement-measurable corner reflector is characterized by comprising a triangular pyramidal reflector body, a Y-direction sliding module, a rotating module, an X-direction sliding module, a base module and connection rods, wherein the triangular pyramidal reflector body and the Y-direction sliding module are connected through the rotating module; the X-direction sliding module and the base module are located below the Y-direction sliding module; all the modules are connected through the connection rods. The double-displacement-measurable corner reflector has the advantages that a cardan joint allows the corner reflector to freely rotate in a three-dimensional space, so the repeating utilization rate is high; the corner reflector can move in the X-direction and the Y-direction and simulate radar sight direction displacement at high precision; vernier calipers are installed on the two sides of the X-direction and the Y-direction of the corner reflector, so reading errors caused by movement of the corner reflector can be reduced; the corner reflector is convenient to carry, easy and convenient to install and detach, low in cost, and capable of adjusting directions of the reflector body in the three-dimensional space and enhancing the reflection intensity and the SNR of a radar signal.

Description

Technical field [0001] The invention relates to a double displacement measurable angle reflector, belonging to the technical field of ground-based radar interferometry. Background technique [0002] With the continuous development of InSAR technology, the technology can not only quickly and large-scale obtain topographic maps of various scales, but also can be used in many fields such as resource investigation, environmental monitoring, disaster forecasting, disaster assessment and military reconnaissance. Research and development that can make full use of InSAR theory and technology and expand the application of InSAR technology in various fields of economic and social sustainable development have attracted more and more attention from academic and industrial circles. InSAR has become an indispensable sensor in the field of earth observation technology due to its characteristics of all-weather and all-weather acquisition of surface information. It is especially suitable for area...

AI Technical Summary

Problems solved by technology

At the same time, GBInSAR technology is more and more widely used in the deformation monitoring of bridges, landslides, glaciers and dams. In order to ensure the quantitative observation function of the GBInSAR system, it is necessary to perform calibration in the observation area. Large radar cross-sectional area, so it is often used as a standard reference target during calibration, and corner reflectors are placed in the monitoring area. However, due to the complicated installation of ordinary corner reflectors and low reuse rate, quantitative simulation of displacement cannot be performed. Therefore, Research on a measurable directional and high-efficiency corner reflector is of great significance to the research of GBInSAR

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