GPS ? ??? ? ??? - PowerPoint PPT Presentation

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GPS ? ??? ? ???

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Title: PowerPoint Presentation Last modified by: kinaba Created Date: 1/1/1601 12:00:00 AM Document presentation format: Other titles – PowerPoint PPT presentation

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Title: GPS ? ??? ? ???


1
GPS ???? ? ???
  • The 60th Nandemo Seminar
  • 2007/04/20
  • ?? ??

2
????
  • ????
  • ?? ??
  • http//www.kmonos.net/
  • ??
  • ???????
  • ???????????????????
  • ?????
  • ?????????????????????????
  • XML????????????????????

3
GPS??
4
GPS ??
  • Global Positioning System
  • ????????????????
  • ?????????

??????????? ???????? ??????????
5
GPS?????
  • ?????????
  • ????
  • ???????
  • 110 / 119 ????????
  • ????
  • GPS???(??)???????

6
?????? - GPS??????
  • 2????
  • (??,??) ??????
  • 3????????
  • (??,??,??)
  • 4????????
  • (??,??,??,????)

7
GPS?????
  • 2030??????
  • ??
  • ???

???????????? ???????!!
8
GPS????
9
??????
  • ????????????????????????
  • ? ?????????????????
  • d ???????????????
  • ?-d ????

10
?????? - GPS???
  • ????????????????????????
  • ? ?????????????????
  • d ???????????????
  • ?-d ????

11
?? ????????????
  • ??????????3?(??)???
  • A (Ax, Ay, Az) ???? dA
  • B (Bx, By, Bz) ???? dB
  • C (Cx, Cy, Cz) ???? dC
  • ???????
  • dA2 (x-Ax)2(y-Ay)2(z-Az)2
  • dB2 (x-Bx)2(y-By)2(z-Bz)2
  • dC2 (x-Cx)2(y-Cy)2(z-Cz)2
  • ??!
  • 3?????2????

12
???????
  • GPS??????????
  • GPS???????????
  • GPS???

13
GPS???????? (1)
  • ????GPS??????? ?????????????????
  • ?? ??????????
  • ?????????

14
GPS???????? (2)
???? 5?0?0.0001??! ????? 299792458m/s ???
  • ?????????? ????????OK

15
GPS???????? (3)
  • ?????????????????????
  • ????? s ????4??????
  • (dA-cs)2 (x-Ax)2(y-Ay)2(z-Az)2
  • (dB-cs)2 (x-Bx)2(y-By)2(z-Bz)2
  • (dC-cs)2 (x-Cx)2(y-Cy)2(z-Cz)2
  • ??????!

?????????????????????????
16
GPS???????? (4)
  • ??? ?? ?????
  • ?????????

?5?0?0.001? ?????????
17
GPS???????? (5)
  • ???????
  • ??????????????????????????
  • s???????????t???????ts????????????
  • ????d ??k (k???) ????????????!!

18
GPS???????? (6)
  • ???????
  • ??????????????????????????????
  • 110GHz / ?? 330cm ???????
  • ????d 30cmk (k???) ????????????!!

19
GPS???????? (7)
  • ??????? ?????????
  • ??????????????????
  • sin(?t a) 1.5GHz ???????
  • p(t) 1MHz ???? 1, -1 ?
    ????????
  • p(t)sin(?ta)

20
GPS???????? (8)
  • ?????
  • ?????
  • ?????????????????????????p(t)???????

21
GPS???????? (9)
  • p(t) ?PN???????
  • 1MHz ??? 1,-1 ????????????????
  • ????????????????
  • 1023?????
  • 1MHz 30Km 1023????? ? 30000Km
    ???????????!

22
GPS???????? (10)
  • p(t) ?PN???????
  • 1MHz ??? 1,-1 ????????????????
  • ????????????????
  • 1023?????
  • ????????PN???????????????????????????????
  • CDMA (Code Division Multiple Access)

23
???????
  • GPS??????????
  • GPS???????????
  • GPS???

24
GPS??????? (1)
  • ?1
  • ???? p(t) PN???????????? ?PN??? ?
    ???????????????????????????????

???????????????????????????????
25
GPS??????? (2)
  • ?2
  • ???? p(t) PN???????????? ?PN??? ?
    ?????????????????????????????????????????????????
    ???

??????????????
?????GPS?????????
26
GPS??????? (3)
  • ?3
  • ??? p(t) PN???????????????????????????????????!!
    ??????????????!

????????? GPS?????????? D(t) p(t)
sin(?ta) 50bps ??????????????
27
???????
  • 1500???
  • ?????????????????????
  • ??????????etc
  • ???????????????????
  • ??????
  • ????????
  • ????????????
  • ???(8bit) ?? ?????????????1999?? 8bit
    ?????????????
  • ????

28
???????
  • GPS??????????
  • GPS???????????
  • GPS???

29
GPS???
  • ?????? 5m ??? ???????
  • ??????????

30
????? (1)
  • ??????
  • ??????
  • ??????????????????
  • ?????????
  • ????
  • ????

31
????? (2)
  • ?????
  • ?????????
  • ??????????????????????????
  • ?GPS????????????
  • ?????
  • GPS?????(?????)????????????????????

32
????? (3)
  • ????? (SA Selective Availability)
  • ??????????????GPS????????????????????
  • 2000?5?????????
  • ? DGPS

33
GPS???
34
GPS??????????????
  1. GPS?????????
  2. ???????????????(????????) ???????
  3. ??????????

35
GPS??????? (1)
  • google//GPS????

36
GPS??????? (2)
  • google//GPS????
  • \10,000
  • PSP?GPS????????????
  • ???????GPS???????????
  • ???????GPS??????????

37
NMEA - GPS???????
  • ??????????
  • 1?1????

GPGGA,011738,3540.4949,N,13945.2633,E,1,03,06.9,0
0000.0,M,039.3,M,,47 GPGSA,A,2,13,17,23,,,,,,,,,
,07.0,06.9,00.907 GPGSV,2,1,06,02,28,301,00,04,6
4,339,00,05,04,309,00,23,39,059,3274 ...
38
????????
  • GPS-CS1K (Sony)

39
GPS??????? (3)
  • ????

40
GPS??????? (4)
  • ?????????
  • 2007?4????????????? ? ??????????????????
  • ????
  • ????
  • ??????????
  • ???????????????
  • ???????????????????

41
???? from ????
  • ?????URL????????????
  • au
  • lta hrefdevicegpsone?urlURLgtlt/agt
  • DoCoMo (FOMA)
  • lta hrefURL lcsgtlt/agt
  • SoftBank
  • lta hreflocationauto?URLgtlt/agt
  • ?????????CGI?????
  • ??http//www.yaskey.cside.tv/mapserver/note/gps.h
    tml (GPS?? ???? ????)

42
??(?)
  • (?????)

43
????
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