NVDF provides instantaneous PTT VHF/UHF geolocation capability to support missions where it is possible to fly much closer to targets than traditional stand-off systems. Ideal for rural or remote areas wehre the density of emitters is low (no inherent interference cancellation, ideal for AFG operations) Signal types for initial system frequency range: 100-500 MHz (Push to Talk Transceivers (PTT), FRS Transceivers, High-Powered Cordless Phones (Handset and Base Station), CW Beacons and RF Tags, Trunk Mobile Radios
- Better look-angle, resolution, and accuracy for EO/IR sensors (directly above target, +/- 60 degrees angle, sub 50m accuracy achieved in CONUS testing) - More favorable intercept conditions for low power emitters (Locate priority talkers vice repeaters)alri - Instantaneous Geolocation from a signal measurement due to a 2D look-down antenna array. - Proto-type (CIA) system designed for general aviation acft. AST Hydrah processor, 4x10 ft array w/ cavity backed circular polarized spiral antennas designed to cover 100-100Mhz range.
Torrance, California-based AST is a division of defense giant Raytheon. The company touts its expertise in collecting and exploiting communications signals, including via remote sensing, with the goal of “increasing situational awareness.” — Margot Williams, The Intercept
Cost: $1.5 mil