Accession Number:
AD0256704
Title:
OPTICAL COMMUNICATION BETWEEN A RE-ENTRY VEHICLE AND THE EARTH, PART I
Descriptive Note:
Corporate Author:
GENERAL PRECISION INC PLEASANTVILLE N Y GENERAL PRECISION LAB DIV
Personal Author(s):
Report Date:
1960-12-01
Pagination or Media Count:
1.0
Abstract:
An optical communication system betwen a re-entry vehicle and the earth is analyzed to determine source spectral radiances and signal-to-noise ratios as functions of system parameters. The optical system includes an extended source, modulator, and transmitting mirror for each transmitting system, the a mosphere as a transmission medium, and a receiver mirror, filter,AND DETECTOR FOR EACH RECEIVING SYSTEM. Noise was considered to be due to radiation from the re-e try body, daylight sunlight scattered from the atmosphere and sunlight back-scattered from the earth the dark currents of the ultiplier phototubes used as the detec ors are hown to be negligible. Author