Low-Probability-of-Intercept/Low-Probability-of-Detection (LPI/LPD) Data Link

The role of UAVs in reconnaissance and combat missions is expanding at a rapid rate. One of the key innovations offered by UAVs is the ability to extend the vision of ground units through remote imagery. UAVs also serve as an ideal platform for relaying communications between ground units, because of their wide line of sight. These applications require a radio aboard the UAV to establish a data link with ground units. The limited payload capability of many UAVs have typically resulted in the use of unsophisticated radio systems. Not only are current systems easy to intercept, they also serve as a beacon, divulging the presence and location of the UAV and ground units that are transmitting to it. We propose developing U-DAT, an LPI/LPD data link for use in small to medium size UAVs (such as Dragon Eye and Shadow). The proposed data link uses software defined radio techniques to offer a flexible solution that can be adapted as mission needs change. We will deliver a demonstration of the waveform and functional hardware in Phase I.