Transcription of and レーダの原理 （電波による探知および測距）
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and レーダの原理 （電波による探知および測距）
- 2013/05/20 Lst. 2021/01/19 2 2 340 2=680 m 340 m/s R 680 m R=340 m c=3 108m/s RADARR adio Detection andRanging SONARS ound Navigation and Ranging LIDAR Light Detection and Ranging 3 FM-CW , RF , CQ Secondary surveillance radar system (SSR) , `` , , 2014 Primary radar , `` , , 1971 EHF SHF AM FM 470 770 MHz ( ) 1920 2200 MHz 2450 MHz LAN 2450 MHz, 5000 MHzBS, CS, Radio wavevisible43 kHz30 kHz300 kHz3 MHz30 MHz300 MHz3 GHz30 GHz300 GHz3 THz10000 THz300 HzVLFLF MF HF VHFUHF 1 mm10 cm1 m10 m100 m1 km10 kmvery low ULFultra lowvery high ultra high super high extremely high 1000 km100 mm1 cm 30 300 Hz : SLF, 3-30 Hz : ELF Ku C ASR L EHF SHF 300 MHz3 GHz30 GHz300 GHzFrequency range Band100
※2 F. T. Ulaby``Fundamentals of Applied Electromagnetics, Fifth Ed.’’ p.438, Prentice Hall, 2007 レーダ方程式（その3） 15 を使って一方を消去すると 24 24 2 4 2 2 4 (4 ) (4 ) 4 te te e t e rt P APAAPA PG rr r 22 24 24 4 2 (4) (4) 4 (4)3 tt tt t tt re PG PG G PG PA rr r
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