机载激光诱导荧光遥感系统相关参数的讨论

A discussion of relative parameters of the airborne remote sensing system of laser-induced fluorescence radar

以文献[1]所设计的机载激光诱导荧光遥感成像系统为例,简要地分析了该遥感系统的荧光参数、信噪比、飞机飞行参数与系统性能的关系。探测器接收到的荧光强度和信噪比除了与激光器发射的功率、被激发物质的荧光量子效率、密度、浓度和探测器的量子效率等成正比外,还受遥感系统的仪器结构、探测器的灵敏度、荧光寿命、阳光的反射,以及大气散射等因素的影响。给出了遥感系统的空间分辨率与飞机飞行高度和速度、激光扫描频率和脉冲发射频率之间的关系。分析结果对实际研制机载激光荧光遥感系统有重要的参考价值。

Based on the airborne remote sensing systems of laserinduced fluorescence radar that was designed in reference, the relative parameters such as fluorescence, ratio of signal to noise, relations between flight parameters and performance of the remote sensing system are analyzed briefly. The analysis shows that intensity and ratio of signaltonoise of fluorescence received by the remote sensing system is proportional to power of laser, density and concentration of stimulated matters, quantum efficiency of the matter and detector etc.. Besides, performance of the remote sensing is affected by structure of the system, life of fluorescence, reflection of daylight and scattering of atmosphere etc.. The relations between space resolution and height and velocity of plane, frequency of scanning and emitted pulse are given. The results are important for developing airborne remote sensing system of laserinduced fluorescence.