Antenna and Test Parameters

0347-EX-ST-2018 Text Documents

Systems & Technology Research

2018-02-26ELS_205490

Experiment Details including Antenna Parameters File: 0851-EX-ST-2017 Date Filed: June 22, 2017 Experiment Overview The purpose of the experiments are to flight test a new radar system prototype under development for DARPA. These will be individual test events over a 6 month period, as opposed to continuous operation. We will produce and test two prototype systems, each with a phased array antenna. For all computations we consider the highest desired bandwidth and ERP of the systems. Antenna Parameters: The antenna is an electronically steered directional rectangular antenna with a 3dB azimuth beamwidth of 2.4 degrees and a 3dB elevation beamwidth of 10 degrees using the full array. In certain configurations we may have a wider beam, but the ERP will be reduced as a result. Power Parameters: The radar transmits with a 10.5% duty cycle with pulses no longer than 100 microseconds. The peak transmit power is 1135 Watts. With the 10.5% duty cycle, the average transmit power is 120 Watts. The antenna transmit gain is 31.34 dB, or a factor of 1361. So the peak ERP is 1135 * 1361 = 1.55 MW. The average ERP is 120 * 1360 = 163 kW. Operations / Flight Routes: Flights are currently planned for Lawrence, MA (KWLM) and North Texas Regional Airport (KGYI), but we anticipate similar experiments at Ypsilanti, MI and Hunstville, AL. A nominal flight altitude of 8500 ft is planned but could vary from 6,000 ft to 9,000 ft depending on weather conditions and VMC minimum requirements. 600 W. Cummings Park, Suite 6500, Woburn MA 01801  Research.com


Document Created: 2018-02-26 15:22:10
Document Modified: 2018-02-26 15:22:10
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