| US 7,545,309 B1 | ||
| System and method for communicating low data rate information with a radar system | ||
| William K. McIntire, Sandy, Utah (US); Larry S. Thomson, Bountiful, Utah (US); David H. Robbins, Bountiful, Utah (US); and James J. Boesch, Salt Lake City, Utah (US) | ||
| Assigned to L-3 Communications, Corp., New York, N.Y. (US) | ||
| Filed on Nov. 03, 2006, as Appl. No. 11/592,537. | ||
| Claims priority of provisional application 60/733859, filed on Nov. 03, 2005. | ||
| Int. Cl. G01S 13/00 (2006.01); H04B 1/10 (2006.01) | ||
| U.S. Cl. 342—57 [455/218; 455/223] | 9 Claims |
| 1. A method for transmitting low data rate symbols from a communications terminal to a burst radar transceiver, the symbols
having information encoded therein, the method comprising:
emitting a plurality of bursts from a radar transmitter in the burst radar transceiver, wherein each burst has a burst interval
and is separated by an inter-burst interval;
transmitting a symbol from the communications terminal to the burst radar transceiver, wherein the symbol has a symbol transmission
period that is substantially longer than a radar transceiver burst period, the burst period comprising the burst interval
and the inter-burst interval;
accumulating symbol energy during inter-burst intervals at the burst radar transceiver over a plurality of the burst radar
transceiver burst periods for approximately the symbol period; and
identifying the information in the symbol based on a characteristic of the accumulated symbol energy.
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