Accession Number:

ADA470520

Title:

FM-MRR Analog Audio System

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC REMOTE SENSING DIV

Report Date:

2005-01-01

Pagination or Media Count:

9.0

Abstract:

In this work, we describe a hybrid free-space infrared communications link that supports audio transmission. The technique combines conventional frequency modulation FM techniques with optical amplitude modulation AM with a Multiple Quantum Well MQW Modulating Retroreflector MRR technology. The method has produced a robust, low power system capable of transmitting high quality audio information over a free space infrared link extending to multiple kilometers, depending on the characteristics of the TransmitReceiver interrogator and the sensor MRR unit at the data source.

Subject Categories:

  • Telemetry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE