Synthetic aperture radar two-dimensional diagram image modulator based on phase modulation surface

Abstract

The invention discloses a synthetic aperture radar two-dimensional diagram image modulator based on a phase modulation surface, comprising a four-phase phase modulation surface, a rotation arm, a rotation table, a motor, a phase modulation surface digital controller and a motor digital controller; the modulation surface consists of one bottom plate and four side plates; the bottom plate and the side plates are formed by the modulation surface; the four side plates are vertically fixed on the bottom plate; the four side plates and the bottom plate form four analogy trihedral angle reflectors; the modulation surface is fixed on the rotation arm which is fixedly connected to the rotation table; the rotation table is electrically connected to the motor; the motor is electrically connected to the motor digital controller; the bottom plate and the four side plates are electrically connected to the digital controller; one end of the rotation arm which is away from the rotation table is used for bearing the modulation surface; the rotation arm connected to the rotation table is controlled by the rotation table and is rotated under the driving of the rotation table; the rotation of the rotation table is driven by the motor and the rotation speed is controlled by the motor digital controller; and the modulation surface digital controller is used for controlling the reflection characteristics of the four-phase phase modulation surface.

Description

【Technical field】 [0001] The invention belongs to the field of synthetic aperture radar image modulation. Specifically, it involves improving the traditional one-dimensional synthetic aperture radar image modulator by using the phase modulation surface, and further speaking, designing a two-dimensional synthetic aperture radar image modulator based on the phase modulation surface. 【Background technique】 [0002] Synthetic Aperture Radar (SAR) has the ability to perform all-weather and all-weather two-dimensional high-resolution imaging of ground targets, and is an important part of strategic reconnaissance and battlefield surveillance systems. The SARs currently deployed in various countries include: the Lynx system on the "Predator" UAV, the HISAR on the "Global Hawk" UAV, the I-Master on the French "Hawkeye" UAV platform, Germany's TerraSAR, Canada's " The spaceborne SAR system on Radarsat2, etc. In order to effectively cope with the continuous development and applicatio...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies of the existing SAR one-dimensional image modulator, and provides a SAR two-dimensional image modulator based on a phase modulation surface

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