Aiming at the problem of angle motion estimation in monopulse three - dimension imaging , a novel angle motion parameters estimation method based on the inverse synthetic aperture radar imaging for difference beam is presented 摘要针对单脉冲三维成像时的目标角运动估计问题，提出一种基于差波束逆合成孔径雷达成像的新的角运动参数估计方法。
Synthetic aperture radar ( sar ) has the characteristic of all - weather , day / night and long range , so it is of great value to study on real - time processing for sar imaging in both civilian and military applications 合成孔径雷达成像具有全天候、全天时和远距离的特点，因此合成孔径雷达成像实时信号处理的研究对军用和民用均具有重要的实用价值。
Radar imaging is an epoch - making achievement in modern exploration science . it made the basal function of radar entitative changed , and it radically enlarged human ’ s ability of observing the nature and the living space 雷达成像是现代探测科学领域的一项划时代成就,它使雷达的基本功能发生了质的变化,从根本上扩展了人类观察自然界和生存环境的能力。
Mainly this paper discusses applying time - frequency analysis in several questions , including estimation of doppler parameter imaging of sar , detection of moving target and estimation of direction of arrival in array signal processing 本文讨论了时频分析在合成孔径雷达成像中的多普勒参数估计的应用、时频分析在动目标检测中的应用以及它在信源来波方向估计中的应用。
A real - time imaging tracking system overcomes the shortcomings of the ladar system which needs high cost , is easily disturbed by electromagnetic wave and ca n ' t be visualized . compared with the infrared , it is superior in the aspect of tracking cold - target 实时成像跟踪系统克服了雷达成像系统费用昂贵，容易受外界电磁波的干扰，并且难于达到可视化的缺点，在跟踪冷目标方面又较红外优越。
Motion errors are given first , and then theoretical analysis , simulation result show affections caused by 3 kinds of typical motion errors both on the doppler and the image . last the phase error criterions are given . 4 4 .研究了机载双站sar中偏航、俯仰和横滚三种姿态误差对回波多普勒频率和雷达成像的影响,并分析研究了天线指向误差对回波幅度的影响,最后通过仿真实验证明了研究的正确性。
The revised range spread function is validated by simulation . the method to design waveform and sar system is described , and the steps of sar imaging are presented . the stepped - chirp waveform and stepped - chirp sar imaging are presented in detail 主要创新在于：修正了径向速度引起的距离像展宽表达式，提出了用于合成孔径雷达成像的频率步进波形设计方法，给出了频率步进合成孔径雷达的系统设计与成像步骤。
Synthetic aperture radar interferometric ( insar ) is a new radar imaging technique developed from sar . carried forward the merit of sar , it can provide accurate digital three - dimensional topographic measurement in all weather conditions day and night 干涉合成孔径雷达( interferometricsyntheticapertureradar ,简称insar )是在合成孔径雷达( syntheticapertureradar ,简称sar )基础上发展起来的一项新的雷达成像技术。
The effect of the radial velocity on synthetic spectrum and synthetic range profile is discussed , and the velocity compensation method is described . the ambiguity of stepped - chirp is presented and < wp = 6 > used to design the waveform . furthermore , the stepped - chirp sar system design and sar imaging are discussed 创新点在于：提出了脉内调频脉冲串波形合成宽带回波、获得一维高分辨率距离像的方法，给出了脉内调频脉冲串合成孔径雷达成像的具体步骤。
Linear frequency modulated continuous wave ( lfmcw ) radar has many characteristics of simple structure , small volume , light weight , low cost , low transmitter peak power , short wavelength , thus it is especially suitable to be used in radar image , research of target characteristic , end control and guide , battlefield spy , scene watch etc . and more people in the world interested in it , it will have a wide prospect 线性调频雷达具有结构简单、体积小、重量轻、造价低、发射峰值功率低、波长短等一系列优点，特别适合于雷达成像、目标特性研究、末制导、战场侦察和场面监视等领域，目前已受到国内外的广泛重视与研究，应用前景十分诱人。
