用于空间飞行器动态成像采用卫星波形的双基地SAR
安东迪米托米·拉扎洛夫
【期刊名称】《雷达科学与技术》 【年(卷),期】2013(011)003
【摘要】Spaceborne bistatic synthetic aperture radar(BSAR) concept and topology with a transmitter of opportunity based on the satellite and stationary receiver,and moving target is presented.Kinematical vector equations are derived and mathematical model of BSAR signal with Barker's phase code modulated (BPCM) is described.It is proven that BSAR signal formation and image reconstruction can be interpreted as direct and inverse projective operation,respectively.Through Taylor expansion of the projective operator basic image reconstruction procedures,including
phase
correction,Fourier
transform
range
compression and Fourier transform azimuth compression are defined.Numerical experiment to verify mathematical models derived is carried out.%给出一种天基双基地合成孔径雷达(BSAR)的概念,其拓扑结构为卫星机会发射机、固定接收机和运动目标.推导出运动学矢量方程并描述了采用巴克相位编码调制(BPCM)的BSAR信号数学模型.经证实,BSAR信号形成与图像重构可被分别理解直接投影运算和横向投影运算.通过对投影算子基本图像重构过程进行泰勒扩展,包括相位校正,定义了傅里叶变换距离压缩和傅里叶变换方位压缩.通过数值实验验证了导出的数学模型. 【总页数】10页(227-235,245)
用于空间飞行器动态成像采用卫星波形的双基地SAR
