The Advanced Research Projects Agency (AEWA) has embarked on a comprehensive effort to advance the state-of-the-art in meteor burst (MB) communications. The principal ARPA MB link performance objective is the demonstration of daily-average MB link throughputs in excess of 1 kbps for unconstrained point-?o-point communications, versus 1OObps for conventional installations. This order-of-magnitude increased throughput permits the use of advanced digitized voice processors developed by the Naval Research Laboratory. In addition, ARPA seeks to enhance link performance between an unconstrained base station and a "disadvantaged" terminal.The core technologies integrated in this effort include adaptive antenna arrays, advanced MI3 modems, and digitized voice processors. This paper describes the ongoing High-ERP Meteor Burst Link Experiment (HEMBLE), presents link performance predictions, and suggests several applications for advanced MB communications.

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