(12) United States Patent ao) Patent No.: Us 7,545,309 Bi
Mclntire et al. (45) Date of Patent: Jun. 9,2009
(54) SYSTEM AND METHOD FOR
COMMUNICATING LOW DATA RATE
INFORMATION WITH A RADAR SYSTEM
(75) Inventors: William K. Mclntire, Sandy, UT (US);
Larry S. Thomson, Bountiful, UT (US);
David H. Robbins, Bountiful, UT (US);
James J. Boesch, Salt Lake City, UT
(US)
(73) Assignee: L-3 Communications, Corp., New
York, NY (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 21 days.
(21) Appl.No.: 11/592,537
(22) Filed: Nov. 3, 2006
Related U.S. Application Data
(60) Provisional application No. 60/733,859, filed on Nov. 3, 2005.
(51) Int. CI.
G01S13/00 (2006.01)
H04B 1/10 (2006.01)
(52) U.S. CI 342/57; 455/218; 455/223
(58) Field of Classification Search 342/57;
455/218, 223 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
A method is disclosed for transmitting low data rate symbols from a communications terminal to a burst radar transceiver. A plurality of bursts can be emitted from a burst radar transceiver, each burst having a burst interval and separated by an inter-burst interval. A symbol can be transmitted from the communications terminal to the burst radar transceiver. The symbol has a symbol period that is substantially longer than a radar transceiver burst period comprising the burst interval and the inter-burst interval. Symbol energy can be accumulated during inter-burst intervals at the burst radar transceiver over a plurality of burst periods for approximately the symbol period.
9 Claims, 6 Drawing Sheets
