CAJ | 학술논문

低空突防目标飞行高度低、时间短，对其进行有效的探测一直是研究的重点和难题。以2.7μm、4.3μm作为探测系统的中心波长，建立了临近空间红外探测像面照度模型。模拟SBIRS天基红外系统和临近空间探测系统，仿真典型目标弹道，考虑大气影响，得到主动段、被动段红外辐射分别在SBIRS预警卫星和临近空间平台的像面照度及目标背景调制对比度。仿真结果表明：对于低空突防目标，临近空间平台较SBIRS拥有更高的信号对比度及更长的探测时间。在被动段，以4.3μm为探测中心波长探测效果好于2.7μm。
저공돌방목표비행고도저、시간단，대기진행유효적탐측일직시연구적중점화난제。이2.7μm、4.3μm작위탐측계통적중심파장，건립료림근공간홍외탐측상면조도모형。모의SBIRS천기홍외계통화림근공간탐측계통，방진전형목표탄도，고필대기영향，득도주동단、피동단홍외복사분별재SBIRS예경위성화림근공간평태적상면조도급목표배경조제대비도。방진결과표명：대우저공돌방목표，림근공간평태교SBIRS옹유경고적신호대비도급경장적탐측시간。재피동단，이4.3μm위탐측중심파장탐측효과호우2.7μm。
It has been the focus of the study for effective detection of low altitude penetration target which has low altitude, short flight time. To 2.7μm, 4.3μm wavelength as the center of the detection system, a near space infrared detection image plane irradiance model was established. SBIRS space-based infrared system and the near space detection system were simulated. Simulating typical target trajectory, considering the atmospheric effects, infrared radiation image plane irradiance and modulation contrast of object and background of boost phase and post-boost phase at SBIRS and near space platform were obtained. Simulation results show that near space platform has a higher signal contrast and a longer detection time than SBIRS. For TBM′s post-boost phase, the detection effect of 4.3μm is better than that of 2.7μm as detection center wavelength.