Abstract
The spectral distribution of source intensity needed to obtain a prespecified irradiance at the receiver for different atmospheric haze condition has been calculated on the basis of semi-empirical expression due to Eldridge and Johnson (1962). Variations in the spectral distributions at the receiving end due to a general service lamp for different atmospheric condition are removable by use of matched filters in front of the source. For this study the scattering media are assumed to consist of uniform water dropl.ts of 0.1 (0.1) 0.6 micron radii with a concentration of 103 particles per c.c. The receiving distances are 0.25 (0.25) 1.0 (0.5) 4 0 Km. Attempt has been made to find out a suitable single matched filter for particular atmospheric haze condition to obtain uniform receiving illumination (with 5 percent variation) for all distances upto 1 Km.
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