Bo Le, Zhong Liu, Zhilin Hou, Chunxia Cao. Electromagnetic environment effects of vehicle ignition pulses on shortwave radio receivers[J]. High Power Laser and Particle Beams, 2020, 32(7): 073004
- High Power Laser and Particle Beams
- Vol. 32, Issue 7, 073004 (2020)
Fig. 1. Diagram of vehicle engine ignition system
Fig. 2. Noise power ratio of vehicle engine ignition on and off
Fig. 3. Time domain waveforms and spectrums of three rectangular pulse signals
Fig. 4. EM model of the effect of car ignition on the monopole antenna
Fig. 5. Transmission loss of the car ignition-equivalent antenna to 10 m monopole antenna
Fig. 6. EM model of 2-car ignition-equivalent antenna and the transmission loss
Fig. 7. Input impedance and reactance of the truck ignition-equivalent antenna
Fig. 8. Radiation pattern in x-y plane of the truck ignition-equivalent antenna
Fig. 9. Transmission loss of the truck ignition-equivalent antenna to 10 m monopole antenna（in 50 m）
Fig. 10. Man-made noise at typical frequency
Fig. 11. Comparison of the spectrums with vehicle ignition at the location D and E
Fig. 12. Comparison of the noise floor after signal smoothing
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