Microwave correlated imaging method based on radar rotating emission array

A technology of transmitting array and imaging method, which is applied in the direction of using re-radiation, radio wave measurement system, and radio wave reflection/re-radiation, etc., can solve the problems of low degree of freedom, low resolution, and poor imaging effect of large scene targets.
CN104199028AActive Publication Date: 2014-12-10XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2014-12-10

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Abstract

The invention discloses a microwave correlated imaging method based on a radar rotating emission array and relates to the technical field of radar information acquisition and processing. The microwave correlated imaging method comprises the step 1 of setting a radar rotating emitting antenna, the step 2 of setting the detection surface of the radar and dividing the detection surface into a plurality of detection units, the step 3 of obtaining time delay, the step 4 of obtaining a steering vector by use of the time delay to obtain an array manifold matrix, the step 5 of setting an echo signal vector, the step 6 of establishing a radiation field vector, the step 7 of establishing the correlation form of an original echo vector under M pulses received by the radar and the radiation field vector, the step 8 of solving the objective function of an objection reflection coefficient vector under the constraint condition of the objective function to obtain the objection reflection coefficient vector, and the step 9 of obtaining a rearranged objection reflection coefficient vector matrix, namely the imaging matrix of an objection. The microwave correlated imaging method based on the radar rotating emission array is capable of improving the space-time randomness and the spatial freedom of the radiation field and realizing high resolution image of a large-scene objection.
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Description

technical field

[0001] The invention belongs to the technical field of radar information acquisition and processing, and relates to microwave correlation imaging technology, in particular to a microwave correlation imaging method based on a radar rotating transmitting array. technical background

[0002] Correlation imaging has achieved rapid development in recent years. Correlation imaging is different from traditional radar imaging. Correlation imaging requires light sources to participate in the imaging process, and requires light sources to have statistical characteristics of heat and light, that is, randomness in time and space. fluctuation characteristics. In the actual experimental process, the method of pseudothermolight is generally used instead of real thermolight to study correlation imaging. Martienssen et al. proposed a method of pseudothermolight generation, that is, laser light is used to irradiate the rotating frosted glass, and pseudothermolight is generated...

Claims

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