Analysis On The Effect Range Of The Burst Point Instrumentation System

The concept of irradiance signal-to-noise ratio(SNR) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector's target plane and the background irradiance SNR, the equation of the flying bomb's effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well.The next move is to deduce the range of a bombing radiating wavelength with the flying bomb's temperature being analyzed and to compute the target's irradiance and radiated luminance between spectral penetrating strip based on the Planck formula for the black body. With the respect of complex sky background, the sky spectrum radiated luminance formula is set up. The characteristics of the sky spectrum-radiating feature in theory are discussed according to an atmosphere mode close to the practical working conditions of the point of burst measuring system.The target and background irradiance that can arrive at the detector's target plane were computed. The detector's target plane irradiance SNR of the point of burst measuring system, the target irradiance on the target plane and experiment data were explored. The results are as follows: the target and background irradiance SNR on the detector's are greater than the minimum SNR on a 40-kilometer distance; the target irradiance on the detector's target plane can comply with the minimum irradiance that is not beyond the capability of the detector; the system effect range from the experiment data can satisfy this index.In addition, referring to the irradiance SNR, several measures used to improve the system effect range are proposed.