THE ADDITION OF AN UWB DATA LINK TO ANRO'S IMPULSE RADAR SENSOR
Small Business Information
Five Militia Drive, Suite 104, Lexington, MA, 02173
Gerald F. Ross, Ph.d.
Abstract1An UWB data link is proposed to be added to an existing ANRO impulse radar sensor by creating a block orthogonal transmission scheme (e.g., pulse position modulation) where one of M equal-energy orthogonal signals is transmitted each pulse repetition period together with the radar main bang. Synchronization of the down-link data channel is accomplished by radiating a separate orthogonally polarized signal in coincidence with the main bang. It is shown how an existing miniaturized and solid state (proprietary) modulation/baseband transmitter, ideal for low-cost RPV application, can be modified directly to produce data rates as high as a 50K bits/sec; it is also shown how higher data rates can be achieved. The Phase I program is structured as a combined theoretical and experimental effort to determine concept feasibility. Techniques for LPI data transmission and a study of other synchronizing techniques, as well as the decoding of the data downlink by tunnel diode constant false alarm receiver channels are described. A laboratory experiment demonstrating the feasibility of a free space 10K bit/sec link is proposed under Phase I; expanded data rate capability will be examined during a Phase II program.
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