单站双波段红外被动测距算法研究

空中目标的红外辐射在大气中传输时，大气以及大气中的气溶胶会对红外辐射产生吸收和散射，从而造成红外辐射的衰减。波长不同，大气对其产生的衰减也不同，从而导致红外探测系统接收的目标辐射信号不同。通过对所接收的双波段目标辐射信号进行分析，推导了简单的被动测距算法，并对算法分析得出：此算法模型距离估算的难点在于目标辐射强度J准确值的获得。为此文中改进了测距算法，推导了不再包含目标辐射强度J，的距离新算法，从而简化了距离估算。

Algorithm of Passive Ranging by Single Station

When the infrared radiation of aerial object transmits through the air, and be absorbed or scattered by the air and the aerosol in it, the infrared radiation energy is attenuated which is dependent on wavelengths, the infrared detector will be different. The simple algorithm of passive ranging is derived on basis of analysing the infrared radiation of aerial object. The difficult of the algorithm is how to derive the accurate value of the infrared radiation intensity(J). So the paper amend the algorithm of passive ranging. The new algorithm abbreviate the estimation without the infrared radiation intensity(J).