摘要
在复杂的电子战环境中,为了精确定位目标,需要探测目标的距离。被动测距具有探测距离远、隐蔽性好、抗打击能力和生存能力强等特点。机载红外搜索跟踪系统(IRST)可以通过连续获取目标的角度数据估测目标的距离。基于这种连续测角的被动测距技术,建立了空间极坐标系下的测距模型,并对此模型的可观测性进行分析验证,然后通过选用滤波算法,进行仿真实验和飞行实验。实验结果表明,此测距方法收敛速度快,精度高达5%,具有很高的实用价值。
In the electronic warfare, it needs to detect the distance of the target to determine its position. The passive detection has the characters of far range, good imperceptibility and strong viability. The IRST can detect the distance of the target by getting the data of its angles. Based on this technique, the paper presented the model in the system of polar coordinate, and analyzed the observability. Through selecting the filtering algorithm, simulation experiments were processed. The simulation experimental results indicate that this method of measuring distance has highly practical value because of the quick speed of convergence and the high precision （reach to 5%）.
出处
《电子设计工程》
2010年第12期45-48,53,共5页
Electronic Design Engineering
关键词
被动测距
IRST
连续测角
可观测性
滤波算法
passive measuring distance
IRST
continuously-measuring angle
observability
filtering algorithm
