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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。
A new method of passive ranging based on single-band infrared sensor is proposed. By studying the relationship between the target radiation intensities at adjacent sampling points, the relationship between the target radiation intensity ratio and the target distance ratio and the atmospheric extinction coefficient in a small sampling interval is established. On this basis, the influence of atmospheric extinction coefficient is eliminated under a wide range of meteorological conditions by using Chebyshev fitting, so that the target distance ratio can be directly estimated by the ratio of radiation intensities. Finally, the simulation of target passive distance estimation is realized in the special coordinate system that can be realized. Simulation results show that this method can meet the practical application requirements.