????(Command and Control)

1
??? ?????
????????

• 5.0 ????
• 5.1 ????
• 5.2 ????

2
5.0 ????

• ????(Command and Control)
• ????????????????,???????????,?????????????
• ??????,????????
• ???????
• ???????
• ??????????
• ??????????
• ????????

3
(No Transcript)
4
5.1 ????

• 5.1.1 ??????
• 5.1.2 ??????

5
????!?????
6
?????? Basic Command Procedure
????
?????
?????? ?? ??
?? ??? ????
????
?? ????
????
????
???? ?? ??
?? ??? ??? ??? ???
????
????
7
?????? Basic Command Procedure

• ?????????????????????
• ????
• ?????????????
• ????????(??????????)
• ?????????,????????????

8
????????????????
9
?????? Basic Command Procedure

• ?????????????,?????????????,????,??????????????(
  ??)
• ??????
• ??????????????
• ??????
• ?????????????????

10
?????? Basic Command Procedure

• ?????????,?????????????
• ????
• ????????????????
• ??????????? ????(??? Link 16)

11
?????? Basic Control Procedure
12
?????? Basic Control Procedure
?? ??? ????
??
????
??
????
??
????
?? ??? ??? ??? ???
????
????
????
??????
??????
??????
13
5.2 ????

• ???????????
• ??????
• ????
• ????

14
????

• ??,????(?????????????????????)????????????????
• ????
• ??
• ??(?????)

• ????
• ???(?????)
• ??
• ??
• ????
• ?????
• ?????????????,??????????

15
???????????
16
?????? Modulation and Demodulation

• ???????????????????????????????(?)???,???????
• ????(??,AM)Amplitude Modulation
• ????(??,FM)Frequency Modulation
• ????(??,PM)Phase Modulation
• ??????????
• ?????????????????

17
?????? Modulation and Demodulation
18
????

• ??(analog)???????????,????????????????
• ?????????,???????????????????????????
• ???????????
• ?????????
• ?????????
• ????????(???)???

19
???? ??AM???
??
??? ??
???
20
???? ??AM?????
??
??(32 Hz)
?????,BWAM 2 fm24Hz
20
44
????
????
?? (Hz)
???? ??????(fm) 12 Hz
21
????????? BW

• ??,20-20KHz????????,?BWAM40KHz
• ??????,??3003000Hz???,??????????????,????????????
  ?,?????

??????fm ???? (Hz)
AM?? ?5000 10K
?? ?3000 6K
22
???? ??FM?AM???
? ?
??

• ????????

23
FM??(?????????)
??
????
????
????
????
24
????Digital communications system

• ???????????
• ????????
• ?????????
• ????,???????????,????????

???? ????
1 ?? ??
2 ?? ??
3 ?? ??
4 ?? ??
25
???? ?????? ??????

• ????? Amplitude Shift-Keying (ASK)

26
???? ?????? ??????

• ????? Frequency Shift-Keying (FSK)

27
???? ?????? ??????

• ????? Phase Shift-Keying (PSK)

28
???? ?????? ??????

• ASK
• FSK
• PSK

29
???? ?????? ??????

• ?? Sampling
• ???? Sampling Interval???????????????
• ??? Sampling rate 1/????

Time
30
???? ?????? ??????

• ?? Encoding
• ???????????,??????????
• ? 8-bit ??????,?????????????256??????
• 16-bit ???? 65,536 ?

31
???? ?????? ??????

• ????? (PCM,Pulse Coded Modulation)
• ?????NRZ-L (None Return to Zero Level)???,?? low
  level 0 High level 1?
• ???? ??????,?????????????????????

32
???

• ?????????3bits?????,??ASK???????????,??????????(Sa
  mple)

??? 0 1 2 3 4 5 6 7
??? 000 001 010 011 100 101 110 111
33
?????

• sample
• 12 24 35 44 56 67
• 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 1
  1 1