西安工业大学学报
西安工業大學學報
서안공업대학학보
JOURNAL OF XI'AN TECHNOLOGICAL UNIVERSITY
2015年
1期
29-32
,共4页
钟摆%微多普勒特征%时频分析%识别
鐘襬%微多普勒特徵%時頻分析%識彆
종파%미다보륵특정%시빈분석%식별
pendulum%micro-doppler feature%time-frequency analysis%recognition
针对室内雷达目标的分类和识别问题,建立了室内钟摆目标的微动数学模型和回波模型,分析了室内钟摆运动产生的微多普勒特征。通过仿真钟摆目标的雷达回波,采用平滑伪Winger-Ville时频分析方法,提取了钟摆目标的微多普勒特征。结果表明:室内钟摆运动产生的微多普勒特征是周期为1/2钟摆周期的正弦调制。从仿真回波中提取的微多普勒特征与理论推导一致,验证了模型及理论分析的正确性。
針對室內雷達目標的分類和識彆問題,建立瞭室內鐘襬目標的微動數學模型和迴波模型,分析瞭室內鐘襬運動產生的微多普勒特徵。通過倣真鐘襬目標的雷達迴波,採用平滑偽Winger-Ville時頻分析方法,提取瞭鐘襬目標的微多普勒特徵。結果錶明:室內鐘襬運動產生的微多普勒特徵是週期為1/2鐘襬週期的正絃調製。從倣真迴波中提取的微多普勒特徵與理論推導一緻,驗證瞭模型及理論分析的正確性。
침대실내뢰체목표적분류화식별문제,건립료실내종파목표적미동수학모형화회파모형,분석료실내종파운동산생적미다보륵특정。통과방진종파목표적뢰체회파,채용평활위Winger-Ville시빈분석방법,제취료종파목표적미다보륵특정。결과표명:실내종파운동산생적미다보륵특정시주기위1/2종파주기적정현조제。종방진회파중제취적미다보륵특정여이론추도일치,험증료모형급이론분석적정학성。
The study is about the classification and recognition of indoor targets .The motion dynamics and echo models of the pendulum were built ,and its micro-Doppler modulation was quantitatively analyzed .And then ,the micro-Doppler modulation induced by the pendulum was extracted from the radar echo by the method of Smoothed pseudo Winger-Ville time-frequency analysis .The experimental results show that the micro Doppler features extracted from the simulation echo which is the sine modulation with 1/2 pendulum period agree well with the theoretical derivation ,which verifies that the models and the mathematical derivation are valid .