그림 1. 초단파 레이다와 모의신호 발생장치 연동개념 Fig. 1 Interconnection concept of VHF Radar and Simulated signal generator
그림 2. 모의신 호발생장치의 구조 및 형상 Fig. 2 Figure and configuration of Simulated Signal Generator
그림 3. 표적의 거리에 따른 모의신호 발생장치의 출력레벨 Fig. 3 Output level of the simulated signal generator according to the distance of the target
그림 4. 초단파대역의 혼안테나 빔패턴 특성 Fig. 4 Beam pattern characteristic of Hone antenna of VHF band
그림 5. 격리도를 향상시킨 모의신호 발생장치 구성 Fig. 5 Configuration of Simulated signal generator of enhanced isolation
그림 6. 모의신호 발생장치의 시험구성도 Fig. 6 Test configuration of Simulated signal generator
그림 7. 표적의 거리(150km, 300km)에 따른 모의신호 발생장치 출력의 측정결과 Fig. 7 Test result of output of Simulated signal generator according to distance of target and radar
그림 8. 표적의 속도(300km, 900km)에 따른 모의신호 발생장치 출력의 도플러주파수 측정결과 Fig. 8 Test result of output doppler frequency of Simulated signal generator according to velocity of target
그림 9. 모의표적 2개의 시나리오에 대한 측정결과 Fig. 9 Test Result of Scenario about two simulated targets
표 1. 초단파대역의 표적 방향 및 속도에 따른 계산된 도플러주파수 Table. 1 Calculated doppler frequency according to the target direction and velocity of VHF band
References
- K. Kim and H. Seo, "The system performance analysis and implementation of Digital Communication Satellite," J. of the Korea Institute of Electronic Communication Sciences, vol. 4, no. 9, 2014, pp. 439-445.
- K. Kim and H. Ko, "The Optimization using PCB EM interpretation of GEO satellite's L Band Converter," J. of the Korea Institute of Electronic Communication Sciences, vol. 8, no. 8, 2013, pp. 1219-1226. https://doi.org/10.13067/JKIECS.2013.8.8.1219
- K. Kim, "The Study on the Design and Implementation of SHF band Upconverter of Digital Satellite Communication," J. of the Korea Institute of Electronic Communication Sciences, vol. 12, no. 2, 2017, pp. 261-266. https://doi.org/10.13067/JKIECS.2017.12.2.261
- S. Kim and Y. Rhee, "Implementation of Ku-band Low Noise Block for Global Multi-Band Digital Satellite Broadcasting," J. of the Korea Institute of Electronic Communication Sciences, vol. 11, no. 1, 2016, pp. 23-28. https://doi.org/10.13067/JKIECS.2016.11.1.23
- M. Go, H. Shin, and H. Park, "A RF Module for digital terrestrial and multi-standard reception," J. of the Korea Institute of Electronic Communication Sciences, vol. 1, no. 1, 2006, pp. 16-27.
- K. Kim and B. Kim, "The Study on the design and implementation of a X-band 25W Power Amplifier Module using GaAs MMIC," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 11,2014, pp. 1311-1316. https://doi.org/10.13067/JKIECS.2014.9.11.1311
- ESA Requirements and Standards Division, "Space Engineering: Testing," European Space Agency ECSS-E-10-03A, Feb. 2002.
- T. Kim, J. Park, and Y. Rhee, "Implementation of Ka-band Low Noise Block Converter For Satellite," J. of the Korea Institute of Electronic Communication Sciences, vol. 3, no. 2, 2008, pp. 93-100.
- K. Kim, J. Kim, and M. Bae, "The Study on the implementation and design of the RF transceiver for fast frequency hopping," J. of the Korea Institute of Electronic Communication Sciences, vol. 11, no. 6, 2016, pp. 591-596. https://doi.org/10.13067/JKIECS.2016.11.6.591
- K. Kim, J. Kim, and M. Bae, "The Study on the RF Transceiver Applied to Cognitive Radio Method," J. of the Korea Institute of Electronic Communication Sciences, vol. 10, no. 12, 2015, pp. 1315-1320. https://doi.org/10.13067/JKIECS.2015.10.12.1315