Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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JEM Spectrum Extraction from T-103 Aircraft

T-103 항공기에 대한 JEM 스펙트럼 추출

  • Published : 2008.10.25
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Abstract

Characteristics of JEM(Jet Engine Modulation) are measured and principal meanings are grasped in this paper. This study's object is to measure RCS and JEM for actual aircraft, especially low speed craft. In experiment, various error are generated from unknown cause and for removal these, calibration technique known as IACT(Isolated Antenna Calibration Technique) is used. Experiment is executed at outdoor and target is T-103 which play in beginner course for ROKAF pilot. JEM spectrum of T-103 and frequency characteristics, doppler effects are extracted. X-band used in military aircraft for air-to-air fighting are selected. The data obtained through this study are analyzed to discriminate target especially low speed aircraft for current using radar(X-band)'s performance.

본고 및 연구를 통하여 JEM(Jet Engine Modulation)의 특성 및 기본원리를 파악하며, 실제 항공기 중 저속항공기의 RCS 및 JEM을 측정하는 것이 목적이다. 측정시에는 원하지 않는 여러 오차들이 발생하게 되는데 여러 오차를 제거하기 위해 교정(Calibration)방법을 사용하게 되는데 본고에서는 IACT(Isolated Antenna Calibration Technique)방법을 사용하였다. 측정은 옥외(Outdoor)에서 이루어졌으며 항공기는 공군에서 운용하고 있는 T-103을 표적으로 측정하였다. T-103에 대한 JEM스펙트럼을 추출하며 고정된 표적에 대한 주파수 특성과 도플러에 의한 변화를 판단하는 것이다. 주파수는 일반적인 공대공 항공기에서 운용되는 X밴드를 사용하여 측정하였으며 공대공 항공기에서 저속항공기를 식별하는데 있어 측정을 통하여 분석하였다.

Keywords

References

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