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J. Electromagn. Eng. Sci > Volume 11(3); 2011 > Article
Journal of the Korean Institute of Electromagnetic and Science 2011;11(3):213-219.
DOI: https://doi.org/10.5515/JKIEES.2011.11.3.213   
Development of Frequency Discriminated Simulative Target Generator Based on DRFM for Radar System Performance Evaluation
Myung-Soo Chung1, Woo-Sung Kim1, Chang-Ok Bae2, Seung-Min Kang3, Dong-Chul Park4
1Agency for Defense Development (ADD)
2Human Resources Development Service of Korea
3R&D Department of Neolinx Co. Ltd.
4Department of Radio Science and Engineering, Chungnam National University
Simulative target generators are needed for testing and calibrating various radar systems. The generator in this study discriminates the transmitting frequency from a radar and simulates parameters like target range, range rate, and atmospheric attenuation using the digital RF memory technique. The simulative target echo is then sent to the radar for testing and evaluation. This paper proposes a novel architecture for controlling the digital RF memory so it continually writes ADC data to the memory and reads it for the DAC with increasing one step address in order to control the delay of target range in a simple way. The target echo is programmed according to various preprogrammed scenarios and is generated in real time using a wireless local area network (LAN). To analyze the detected and generated target information easily, the system times for the radar and simulative target generator are synchronized using a global positioning system (GPS).
Key words: Doppler Radar, Digital Radio Frequency Memory (DRFM), Simulative Target Generator, Test Equipments
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