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GPS-20 Operating Manual                               

 

 

Rikaline

 
Rikaline

 Marketing Corp.

 

 

 

           

5F-1, 125, Roosevelt Road, Sec. 5, Taipei, Taiwan 116 

Tel: ++886 2 2934 5456    Fax: ++886 2 2934 4373      E-Mail: 

[email protected]

  web: 

www.rikaline.com.tw

 

 

15

5. Earth Datums 

5.1 Earth Datums 

 
The following is a list of the GPS-20 earth datum index and the corresponding earth datum name: 

 

Item 

Datum 

Reference Ellipsoid 

Data name 

Adindan - Ethiopia   

Clarke 1880 

Data1.dat 

Afgooye – Somalia 

Krassovsky 

Data2.dat 

Alaska, Conus – North American 1983   

GRS 1980 

Data3.dat 

Albania – S-42 (Pulkovo 1942) 

Krassovsky 1940 

Data63.dat 

5 Argentina 

South 

American 

1969 

Data4.dat 

Australia 

Australian – National 

Data70.dat 

Bahrain – Ain el ABD 1970 

International 

Data5.dat 

8 Bangladesh 

Everest 

1830 

Data6.dat 

9 Bolivia 

South 

American 

1969 

Data8.dat 

10 

Botswana – ARC 1950   

Clarke 1880 

Data7.dat 

11 Brazil 

South 

American 

1969 

Data9.dat 

12 

Brunel, East Malaysia 

Everest (Sabah & Sarawak) 

Data37.dat 

13 

Canada – North American 1983   

GRS 1980 

Data10.dat 

14 Chile 

South 

American 

1969 

Data13.dat 

15 Colombia 

South 

American 

1969 

Data12.dat 

16 

Colombia – Provisional American 1956 

International 

Data11.dat 

17 

Czechoslovakia – S-42 (Pulkovo 1942) 

Krassovsky 1940 

Data64.dat 

18 Ecuador 

South 

American 

1969 

Data14.dat 

19 

European 1950 – Central Regional Mean 

International 

Data29.dat 

20 

European 1950 – Cyprus 

International 

Data15.dat 

21 

European 1950 – Eastern Regional Mean 

International 

Data16.dat 

22 

European 1950 – Egypt 

International 

Data17.dat 

23 

European 1950 – Finland, Norway 

International 

Data18.dat 

24 

European 1950 – Greece 

International 

Data19.dat 

25 

European 1950 – Iran   

International 

Data20.dat 

26 

European 1950 – Italy (Sardinia) 

International 

Data21.dat 

27 

European 1950 – Italy (Sicily) 

International 

Data22.dat 

28 

European 1950 – Malta 

International 

Data23.dat 

29 

European 1950 – Northern Regional Mean 

International 

Data24.dat 

30 

European 1950 – Portugal, Spain 

International 

Data25.dat 

31 

European 1950 – Southern Regional Mean 

International 

Data26.dat 

32 

European 1950 – Tunisia 

International 

Data27.dat 

33 

European 1950 – Western Regional mean 

International 

Data28.dat 

34 

Guyana - South American 1969 

South American 1969 

Data30.dat 

35 Hawaii-North 

American 

1983 

GRS1980 

Data32.dat 

36 Hong 

Kong 

International 

Data31.dat 

37 Hu_Tsu_Shan 

Taiwan 

International 

Data33.dat 

38 

Hungary – S-42 (Pulkovo 1942) 

Krassovsky 1940 

Data65.dat 

39 

Indian 1960 

Everest 1830 

Data34.dat 

40 

Ireland – 1965 

Modified Airy 

Data35.dat 

41 

Kazakhstan – S-42 (Pulkovo 1942) 

Krassovsky 1940 

Data65.dat 

42 

Kenya, Tanzania- ARC 1960 

Clarke 1880 

Data53.dat 

43 

Latvia – S-42 (Pulkovo 1942) 

Krassovsky 1940 

Data67.dat 

44 

Liberia – 1964 

Clarke 1880 

Data36.dat 

45 Mexico, 

central 

America 

GRS1980 

Data38.dat 

46 OMAN 

Clarke 

1880 

Data39.dat 

47 Pakistan 

Everest 

1830 

Data40.dat 

48 

Paraguay - South American 1969 

South American 1969 

Data42.dat 

49 

Peru1 – South American 1969 

South American 1969 

Data41.dat 

50 Philippines 

Clarke 

1866 

Data43.dat 

Summary of Contents for GPS-20

Page 1: ...SiRF Star II V1 0 Aug 09 2002 User s Guide Rikaline Marketing Corp 5F 1 125 RooseveltRd Sec 5 Taipei 116 Taiwan R O C Phone 886 2 2934 5456 Fax 886 2 2934 4373 E Mail info rikaline com tw Web www rik...

Page 2: ...ions 3 2 Operational Characteristics 5 2 1 Initialization 5 2 2 Navigation 5 3 Hardware Interface 6 3 1 Connector 6 3 2 Pin Assignment 6 3 3 Trickle Power Description 8 3 4 Push to Fix Description 9 3...

Page 3: ...provides a host of features that make it easy for integration and use 1 SiRF Star II chipset with embedded ARM7TDMI CPU available for customized applications in firmware 2 High performance receiver t...

Page 4: ...tart 45 sec averaged 1 3 4 2 Position Aaccuracy Non Differential GPS Position 5 25 meter CEP without SA Velocity 0 1 meters second without SA Time 1 microsecond synchronized GPS time 1 3 4 3 DGPS Accu...

Page 5: ...nificant inaccuracy exists in the initial data or the orbital data is obsolete it may take more time to achieve a navigation solution The GPS 20 Auto locate feature is capable of automatically determi...

Page 6: ...t functions note 1 8 GPIOC SW dependent functions note 1 9 GPIOD SW dependent functions note 1 10 GND Ground 11 TXA Serial Data Output A 12 RXA Serial Data Input A 13 GND Ground 14 TXB Serial Data Out...

Page 7: ...tor software You can directly communicate with a PC serial port TTL level should be turned to RS 232 level 3 2 6 RXA This is the main receiving channel and is used to receive software commands to the...

Page 8: ...is achieved by powering down the board after a position is determined in such a manner that when it is turned back on it can recomputed a position fix in the shortest amount of time Standard TrickleP...

Page 9: ...current of the GSP2e and CPU There are three events that can happen which effectively return the CPU to normal operation 3 4 3 Power on If power is removed then re applied to the board a reset signal...

Page 10: ...al Drawing 3 6 1 Top View 3 6 2 Lateral View 3 6 3 Connector l 886 2 2934 5456 Fax 886 2 2934 4373 Model GPS9540 10 00 5 00 4 00 1 0 0 0 80 0 8 0 5 70 5 7 0 Straight MCX 5F 1 125 Roosevelt Road Sec 5...

Page 11: ...S data GPVTG Course over ground and ground speed 4 1 1 Global Positioning System Fix Data GGA Table 5 2 contains the values for the following example GPGGA 161229 487 3723 2475 N 12158 3416 W 1 07 1 0...

Page 12: ...age termination 4 1 3 GNSS DOP and Active Satellites GSA Table 4 5 contains the values for the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table 4 5 GSA Data Format Name Example Un...

Page 13: ...E Items 4 5 6 and 7 repeat for each satellite in view to a maximum of four 4 satellites per sentence Additional satellites in view information must be sent in subsequent sentences These fields will be...

Page 14: ...Kilometers per hour Checksum 6E CR LF End of message termination 1 SiRF Technology Inc does not support magnetic declination All course over ground data are geodetic WGS84 directions 4 2 RTCM Receive...

Page 15: ...ropean 1950 Eastern Regional Mean International Data16 dat 22 European 1950 Egypt International Data17 dat 23 European 1950 Finland Norway International Data18 dat 24 European 1950 Greece Internationa...

Page 16: ...pore Modified Fischer 1960 Data51 dat 62 South Africa Clarke 1880 Data52 dat 63 Thailand 1975 Everest 1830 Data54 dat 64 Tokyo_Japan Bessel 1841 Data60 dat 65 Tokyo_Korea Bessel 1841 Data61 dat 66 Tok...

Page 17: ...No backup battery 6 2 Accessories A 10302 Active Antenna 2 Meter MCX straight connector A 10302 A Active Antenna 2 Meter MCX 90 connector A 10305 Active Antenna 5 Meter MCX straight connector A 10305...

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