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Of ultra wideband impact signal through walls radar

Author: ChenHuiHua
Tutor: ZhuXiaoHua
School: Nanjing University of Technology and Engineering
Course: Communication and Information System
Keywords: Wall radar Ultra-wideband impact signal Direct-coupled suppression Back projection algorithm Incoherent imaging algorithm Compressed sensing
CLC: TN958
Type: Master's thesis
Year: 2010
Downloads: 293
Quote: 2
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Abstract


The ultra-wideband radar signal has the advantages of broad-band , high-resolution , with a wide range of applications in many areas of the probe target and the target imaging . Through the wall radar to locate and imaging of fixed obstacles target , there is great potential in the war on terrorism , disaster relief , hostage rescue . Therefore, the two combined to study through the wall of ultra-wideband radar . First wall radar characteristics , describes the system and its performance of several common radar signal , which is mainly to study the impact of ultra-wideband signal , select the appropriate frequency range and penetration characteristics of electromagnetic waves . Then in accordance with the working principle of the wall radar echo signal model and analyze the echo components of the respective signals . The clutter component in the echo signal in accordance with a different time domain frequency domain characteristics, using different methods for the clutter filter . Direct coupled -wave component of the energy in the clutter , have a greater impact on the target signal This article is mainly to study the removal of direct coupled wave the average offset method , principal component analysis , and horizontal filtering adaptive offset law . This paper analyzes the three filtering algorithm works in the ultra-wideband through-wall radar and simulation , to verify its validity . Finally, we filter out clutter target imaging studies , the traditional radar system , the coherent imaging studies back projection algorithm , incoherent imaging study for the new radar system , research algorithm based on triangulation technology ; wall radar imaging algorithm based on compressed sensing . This paper analyzes the working principle of the imaging algorithm , simulation , and analysis of the impact of parameter estimation errors on the imaging results .

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