A Radar Correlation Imaging Method Based on Single Emitter System

Abstract

The invention discloses a radar correlated imaging method of a single transmitting system, comprising the following steps: the size of a meta-material reflective plate and the spacing, number and arrangement shape of scattering units are acquired; an arrangement mode of the scattering units maximizing the distribution detection precision is acquired; a simulation analysis is made of the meta-material reflective plate using HFSS software, and a meta-material modulation reflective plate is designed to realize radar correlated imaging of a single transmitting antenna; an electromagnetic wave signal transmitted by a transmitting antenna is randomly modulated by the modulation reflective plate and irradiated on an imaging target, and after the electromagnetic wave signal is scattered by the target, scattering echo is received by a receiving antenna; and a data processor processes a calculated radiation field and the received scattering echo to get an image of the target. Based on radar correlated imaging of a single transmitting antenna, a target can be imaged at high quality, at high resolution and at a long distance. The complexity and cost of the transmitting system are reduced. Correlated imaging radar is enabled to have functions of target tracking and measuring simultaneously while the detection distance is ensured.

Description

technical field [0001] The invention relates to the technical field of antenna design, in particular to a radar correlation imaging method with a single transmitting antenna. Background technique [0002] Correlation imaging, also known as ghost imaging, is a new imaging technology developed by using the phenomenon of quantum entanglement. The development of ghost imaging has gone through stages such as entangled two-photon ghost imaging, pseudothermal ghost imaging, true thermal ghost imaging, reflected light ghost imaging and computational ghost imaging. In 1995, Shi Yanhua's group at the University of Maryland first experimentally realized ghost imaging based on entangled two-photon pairs. In 2006, Scarcelli et al. used a classical pseudothermal light source to realize lensless thermal optical ghost imaging. Subsequently, Wu Ling'an's group used the rubidium hollow cathode electron tube as the light source to realize true thermal optical ghost imaging. [0003] The rad...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current radar correlation imaging uses a large-scale emission array to obtain random radiation fields, and has complex requirements for the site and the transmission array feeding network, and proposes a radar correlation imaging method with a single emission system to reduce emission The complexity and cost of the system ensure the detection distance and at the same time enable the associated imaging radar to have the function of tracking and measuring the target

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