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):

• SHERMAN,SEYMOUR

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

Descriptors:

• *OPTICAL COMMUNICATIONS
• *OPTICAL EQUIPMENT
• *REENTRY VEHICLES
• COMMUNICATION AND RADIO SYSTEMS
• MIRRORS
• PHOTOELECTRONS
• STATISTICAL DISTRIBUTIONS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE