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http://dx.doi.org/10.5515/KJKIEES.2018.29.4.308

LFM Radar Implemented in SDR Architecture  

Yoon, Jae-Hyuk (Agency for Defense Development 8 th Institute)
Yoo, Seung-Oh (Agency for Defense Development 8 th Institute)
Lee, Dong-Ju (Agency for Defense Development 8 th Institute)
Ye, Sung-Hyuck (Agency for Defense Development 8 th Institute)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.4, 2018 , pp. 308-315 More about this Journal
Abstract
In this paper, we present the basic design results for high-resolution radar development at S-band frequency that can precisely measure the miss distance between two targets. The basic system requirement is proposed for the design of a 3.5 GHz linear frequency-modulated (LFM) radar with maximum detection distance and distance resolution of 2 km and 1 m, respectively, and the specifications of each module are determined using the radar equation. Our calculations revealed a signal-to-noise ratio ${\geq}30dB$ with a bandwidth of 150 MHz, transmission power of 43 dBm for the power amplifier, gain of 26 dBi for the antenna, noise figure of 8 dB, and radar cross-section of $1m^2$ at a target distance of 2 km from the radar. Based on the calculation results and the theory and method of LFM radar design, the hardware was designed using software defined radar technology. The results of the subsequent field test are presented that prove that the designed radar system satisfies the requirements.
Keywords
Linear Frequency Modulation; Range Profile; Doppler Processing; High Resolution; SDR; Radar;
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