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모델링 및 시뮬레이션 기법을 이용한 탐색레이더용 TWTA 성능 분석 및 개선
전인성(In-Sung Jeon),유희선(Hee-Swon Yoo),정성택(Sung-Taek Chung) 한국정보기술학회 2016 한국정보기술학회논문지 Vol.14 No.4
In this paper, we have analyzed the performance of the X-band 8kW TWTA(Travelling Wave Tube Amplifier) which is applied to a naval surveillance radar and identified the problem derived from this result using the M&S(Modeling & Simulation) technique. Currently, the 8kW TWTA has multiple problems: a long repair period of six months, a warm-up time of 30 minutes, a short MTBF(Mean Time Between Failure) of 5,000 hours, and a limited maximum detectable range. We suggest the SSPA(Solid State Power Amplifier) composed of a duty ratio of 13% or more and a maximum transmission output of 4kW as a method to improve these features. As a result of comparing the performance of the SSPA to TWTA, the SSPA is 25% better on detection distance of low altitude as it reached 34km, 40% better on degree of detection elevation as it was 35 degree, 100% better on detection altitude height at 4km. Additionally, we applied the pulse compression technique to solve the problem with decreased resolving power when applying SSPA.
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