Accession Number : AD0621830

Title :   PHASE MODULATION IN LOW POWER TELEMETRY. (LA MODULATION DE PHASE EN TELEMETRIE DE BASSE PUISSANCE).

Descriptive Note : Rept. on Communications, Electronics, and Automation,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV

Personal Author(s) : Pulfer,J. K. ; Terreault,G. L.

Report Date : JUL 1965

Pagination or Media Count : 4

Abstract : Studies were made of the upper atmosphere using Black Brant rockets launched from Churchill Research Range on the Hudson Bay. Ion density and electron temperature inside auroral plasmas are determined. Collected data are transmitted to earth by a radio-telemetry link. It is found that for precision measurement the power of the radio trnasmitter must be reduced to limit the electromagnetic field around the probe. The problem then is to construct a high quality telemetry network between the probe and the terrestrial station.

Descriptors :   (*TELEMETER SYSTEMS, SOUNDING ROCKETS), (*PHASE MODULATION, TELEMETER SYSTEMS), UPPER ATMOSPHERE, AURORAE, DEMODULATION, TELEMETERING TRANSMITTERS, TELEMETERING RECEIVERS, ELECTRON DENSITY, CANADA

Distribution Statement : APPROVED FOR PUBLIC RELEASE