中文摘要：

提出了一种新的单波段红外传感器的被动测距方法。通过研究相邻采样时刻目标辐射强度的关系,建立了小采样间隔内目标辐射强度之比与目标距离比及大气消光系数的关系式。在此基础上,通过采用切比雪夫拟合,在一个宽的气象条件下消除了大气消光系数的影响,使得能够直接用辐射强度之比估算目标距离比。最后,在可以实现的特别设定的坐标系中实现了目标被动距离估计的仿真研究。仿真试验表明,这种方法能够满足实际应用的要求。

英文摘要：

A new method of single-band infrared sensor based passive ranging was proposed.By investigating into the relationship of the radiation intensity between adjacent sampling in-stances,an equation of using the ratio of radiation intensity between two small adjacent sampling instances and the extinction coefficient to estimate the distance ratio between them was developed.Cheby-shev approximation was used to eliminate the effects of the atmospheric extinction coefficient,so the ratio of radiation intensity could be used to estimate distance ratio directly.Finally,the relative passive ranging simulation was developed under a special coordinates which could be realized.Simulation tests show that this method could meet the requirements of real applications.