【作者】 吕华； 苏建忠；

【Author】 LV Hua SU Jian-zhong (Tianjin Jinghang Institute of Technical Physics CASC,Tianjing 300192,China)

【机构】 天津津航技术物理研究所；

【摘要】 采用激光全视场照射,ICCD 面阵接收,由于像增强器的增益指数与其工作电压成正比, 通过对 ICCD 的像增强器的选通电压进行调制提取目标四维图像。即在激光发射后一定的延迟时间内控制其工作电压递增,使在脉冲选通时间内目标距离越远的回波信号通过像增强器时增益倍数越大。这样所成的像经过 ICCD 图像采集输出,其各像素的幅值信号包含目标的距离增益信息和目标反射的灰度信息。再从幅度信息中滤除目标反射灰度信息和大气传输的影响,提取目标的距离信息, 最终从面阵探测器中提取距离信息,实现无扫描激光四维成像制导技术。更多还原

【Abstract】 This paper is concentrated on the principle method and new concept of the scannedess 4D imaging radar.The technique using a pulsed laser to illuminate the target and a commercial CCD camera plus an image intensifier can be used as a receiver.A sequence of 4D images is obtained at modulation gain of image intensifier,intensity of modulation along with time and to measure the average reflected intensity with an imaging receiver incurring modulated gain.The range-processing algorithm deduces range based on the observed relationship between intensity modulation.更多还原