長波標準電波（JJY）の受信信号特性について
Contents
1. 2us Characteristics of JG2AS 40kHz Received Signal at 400km Point SN 5 YNS WWVB 60kHz 11 7 1966 11 40kHz POR 400km OK 12 7 40kHz 6 400km JJY 200km 7 OG a NEC EO EO ON NN2. SMHz 40kHz JJY 2SkHz 12 SkHz H 200kHz 100kHz 30kHz FEF IC JIY FEF RF Systems LFA 520 1 1Hz 3 Ant X 1 4 x 1 2 x 1 2 x 1 2 x 1 2 4 AGC Filter Decoder
3. Amplitude Volt 40kHz JJY 6 0 66V 300KQ 100mV 9 E 7 3 200km R S Amplitude Variation of 40kHz JJY Signal 12 Time hour 03 09 07 JST 40kHz JJY SN E AGC AGC 6 gt 17100
4. AGC 2 3 40kHz JJY 1s F 400km 8 8 12 20 12 D 7 8
5. JJY 40kHz JJY 40kHz PLL 10MHz VCXO JJY EN CR 2 31ms Ew 200km 4
6. 40kHz D 200km 40kHz 20 10 40kHz JJY 1 100 47 1 1999 2 JJY 30 31 2001 3
7. JJY x 2 5 8OOkHz X 1 5 Low Pass Filter 5MHz Sin Wave 0 5Y DC Voltage Proportional to the Phase Difference Comparator Bd Frequency i Reference Jumper Setting 1 Input 200kHz oo innklz Log Gu soktz ge oo 25kHz bao iR SFlipFlop type Phase Comparatar 5 40kHz 14 s En 2 360 xn 0 2us H 2 2 V 0 SV 20 rs 50kHz 40kHz 40kHz
8. Caunter Delay Variation of Demodulated 1Hz Time Code on 40kHz JJY 1Hz Timecode Delay 0 20 M PO0 P5 T 24 Elapsed Time Hour start at 2002 05 25 JST 3 50 2 1 80 2 0 1 AGC JJY AGC 4 g 3
9. JJY TV 1999 6 VLF LF OMEGA LOLAN C GPS 1 40kHz JJY 14s 2 1 4 1 5ms 3 Bl 750km 150g s 4 JJY 1 1 1 JY
10. JJY 1Hz AM 1 M 2 1 80 UTC 1 2 BCD 3 1 3 20 PO0 P5 50 2 0 6 2031 B 40kHz 30ms RS 232C 2031 B 10ms 7Z
11. LT 200 JJY 4 7572B JJY Time Tracking Receiver 3 1 3 2001 6 LSI 22 23 2001 7 JST2000 http www c dex co jp 8 9 10 RF systems 11 Deutch M et al Planning Meeting 23 536 1999 12 JG2AS JJF 2 Feb 1983 13 40kHz No 95 pp 257 261 Mar 1972 14 Lombardi Michael A 17 21 2001 JJY http www troche comy LFA 520
12. G 7 i E 40kHz JJY Phase Delay Variation at Mizusawa Phas NM a nditio e delay is unknown due tb the Mra logic nditio 10MHz VCXO SMHz Allan Standard Deviation 8 3 Time hour 03 08 29 JST 40kHz JY E E ASD Frequency Stability of 40kHz JJY Carrier Signal ASD of Phase Lncl eS Sg to 40kHz JJY Car CG C6 26 06 36 09 10701 0042 C AS ws 100 1000 10000 Sample Time second 100000 1000000 9 70 000 80 000 3 1999 6 D
13. 7 15 J 9 9 UN AM MR 10 3 0 PLL 16 7 10 Phase Delay s JJY 4 OR
14. D 12 131 7 4 8 D 200km 3 4 2 4 40kHz PLL A 14 2 1 SMHz
15. 2 31ms 1 26ms 2 31ms 10ms 7 2031 B JJY 1pps 100 80 Delay msec 0 98 40kHz 60kHz 10 1 1 1 60 1 1 1 i UP JJY Duty 20 Marker Duty 50 Binary 1 Duty 80 Binary 07 JJY JJY 95 HP 50714 Cs Clock 4 Ne HP 531314 Universal JJY
16. 2 40kHz 2 1 o 40kHz JJY 40kHz 40kHz 10MHz H 5 PLL VCXO 9 320kHz 10dB 10 SMHz H SMHz 40kHz JJY 5 9 40kHz JJY 50dB VCXO 10MHz E 730km
17. 2031 B 2031 B AM 1Hz 2 1 3 JJY 3 1 26ms 1pps 2 3 3 15 12ms 2 02ms FE 22 02ms 52 51ms
18. http rfsystemsjapan com WWVB Improvements New Power from An Old Timer In Proc PTTI Applications 7 http www boulder nist gov timefreq generalpdf71406 pdf Vol 29 No 149 pp 279 289 1 Vol 18 An Introduction to Frequency Calibrations NIST National Institute of Standards and Technology Frequency Measurement Analysis System Operator s Manual NISTIR 6610 2001 http Www boulder nist gov timefreq service pdf calbrations pd1 13 1989 16 VERA 207 209 1999
Download Pdf Manuals
Related Search