using a 1.56THz compact range

With the continuing interest in ATR, there is a need for high-resolution fully polarimetric data on tactical targets ata!! radar bands. Here we describe a newly developed system for acquiring W-band data with 1/16 scale models. The NGICsponsored ERADS project capability for obtaining fully polarimetric ISAR imagery now extends from X to W band.The high-frequency terahertz compact radar range developed recently to measure single polarization return fromscale models of tactical targets has been enhanced to collect thlly polarimetric data. The 1.56THz transceiver uses two high-stability optically pumped far-infrared lasers, microwave/laser Schottky diode side-band generation for frequency sweep, anda pair of Schottky diode receivers for coherent integration. Tactical targets may be measured in "free space" or on variousground terrain, which simulate different types of terrain. The results of recent polarimetric measurements on several tactical