Xilinx RFSoC를 사용한 레이다 펄스 신호 실시간 스펙트럼 탐색기 개발

Abstract

In this paper, we present a design and implementation method for a high-speed spectrum analyzer that can detect the spectrum of a received radar pulse signal in real time. To respond to an enemy’s target search or tracking in an electronic warfare environment, it is first necessary to quickly detect the enemy radar signal. Signal search is mainly performed through spectrum analysis, and radar signals exist over a wide band of several tens of gigahertz (GHz). Therefore, signal detection is performed by dividing the entire band into several subbands and searching sequentially or in parallel. Because the search time can be reduced as the subband becomes wider, a searcher capable of processing the wideband in real time is required. In this paper, we design a digital searcher capable of detecting radar pulse signals within a 1 GHz bandwidth in real time and present a hardware implementation method. The requirements for real-time spectrum search for the hardware used are also presented. In the proposed method, the received signal is converted to digital through a high-speed analog-to-digital converter, and the spectrum of the signal can be searched in real time by performing an FFT that reflects the characteristics of the pulse signal. The spectrum analyzer was implemented on a Xilinx RFSoC board and its performance was examined.