The Defense Systems Information Analysis Center (DSIAC) was recently tasked with finding sensors capable of detecting large objects (∼20 ft × 10 ft × 10 ft or greater in volume) inside an open field. This sensor must not give off a visual signature to the naked eye or low-light visual detection tools or give off radio frequency emissions. It must function in complete darkness (i.e., no sun, moon, starlight, etc.).
The sensor must meet the following criteria: maximum of 365 mm long, 156 mm wide, 110 mm high, and weigh less than 6 lb, including the mounting brackets or any other mounting and stabilizing necessities (ideal weight is less than 3.65 lb). It must also function between -20 °C and 45 °C; have an average power draw of less than 33 W, maximum average power draw no greater than 54 W, and an ingress protection value of 64 (IP64) or greater; and withstand the vibration environment in the sensor’s location while its natural frequencies avoid critical excitation frequencies of 14.7 Hz and 44 Hz.
Potential communication interfaces include serial RS-232 connection, gigabit Ethernet connection, 10/100 Ethernet port, or 1pps output to payload. Power voltage rails of 28 VDC (2A or 3A max), 12 VDC (2A or 3A max), or 5 VDC (×2, 2A max each) are available.
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