BACKSCATTER SIGNATURE STUDIES FOR HORIZONTAL AND SLANT RANGE VISIBILITY.
SPERRY RAND RESEARCH CENTER SUDBURY MASS
Pagination or Media Count:
Analytical and experimental results of a study of a backscatter signature system for measurements indicative of horizontal and slant visual range are presented. The physics of the concept, including the relationships between characteristics of a time display of backscattered laser energy and the extinction coefficient of the visibility restricting scattering medium, also is discussed. Data obtained simultaneously from the backscatter signature system and conventional transmissometers were used to investigate the effectiveness of the measuring technique and the changes in the operating characteristics obtained by varying the system configuration. The backscatter signature measurements, converted to atmospheric transmittance, compare well with those of the transmissometer, considering certain incompatibilities between the measuring systems. The optimum system configuration and design parameters are discussed with respect to the design of a backscatter signature system. Author