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Study of Passive Radar Imaging Algorithm Based on External Illuminators Sub-apertures Synthesis

Author: ZhangZuoWen
Tutor: WangJun
School: Xi'an University of Electronic Science and Technology
Course: Signal and Information Processing
Keywords: External illuminators Dual / multi- base synthetic aperture radar The coherent Doppler chromatography (CDT) Synthetic aperture
CLC: TN958.97
Type: Master's thesis
Year: 2006
Downloads: 21
Quote: 0
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Abstract


Dual / multi- static radar using external radiation sources ( TV, radio , and other civilian opportunities irradiation source ) , give full play to the advantages of conventional radar , but also has a strong ability to survive . Take advantage of the system of radar moving target imaging , can be used to target classification, identification , etc. , with a wide range of application prospects . Passive radar imaging technique based on outside sources of radiation , in essence belongs to a dual / multi- base synthetic aperture radar imaging technology . The bistatic radar ISAR imaging , a brief analysis of this the institutional radar imaging technology , and then focuses on the how to make use of more than one TV , FM radio station , a combination of the transmitted signal to achieve the turntable imaging of moving targets . TV, FM radio signal of the signal characteristics of continuous-wave and continuous wave radar turntable imaging the a coherent Doppler chromatography (CDT) imaging algorithm based ; then introduce some of the characteristics of bistatic synthetic aperture radar its equivalent monostatic radar , called the bistatic equivalence theorem . Based multi- launch pad - the single receiver orbiting imaging model , each transmitting station was considered to form a sub-aperture data processing . Finally, based on the principle and implementation of the program of the multiple transmit the passive table synthetic aperture radar imaging algorithm : first in each sub- aperture internal CDT imaging algorithm for data processing , the formation of coarse resolution sub-image ; comprehensive form then all sub- images a fine resolution images to achieve high-resolution imaging .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radar > Radar: institutional sub- > Passive radar
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