Novatel OM-20000041 用户手册
G
Geodetic Datums
234
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
G
GEODETIC DATUMS
The following tables contain the internal ellipsoid parameters and transformation parameters used in the GPSCard.
The values contained in these tables were derived from the following
The values contained in these tables were derived from the following
DMA
technical reports:
1.
TR 8350.2
Department of Defence World Geodetic System 1984 and Relationships with Local
Geodetic Systems - Revised March 1, 1988.
2.
TR 8350.2B
Supplement to Department of Defence World Geodetic System 1984 Technical Report
- Part II - Parameters, Formulas, and Graphics for the Practical Application of WGS84
- December 1, 1987.
- December 1, 1987.
Table G-1
Reference Ellipsoid Constants
ELLIPSOID
ID CODE
a (metres)
1/f
f
Airy 1830
AW
6377563.396
299.3249647
0.00334085064038
Modified Airy
AM
6377340.189
299.3249647
0.00334085064038
Australian National
AN
6378160.0
298.25
0.00335289186924
Bessel 1841
BR
6377397.155
299.1528128
0.00334277318217
Clarke 1866
CC
6378206.4
294.9786982
0.00339007530409
Clarke 1880
CD
6378249.145
293.465
0.00340756137870
Everest (India 1830)
EA
6377276.345
300.8017
0.00332444929666
Everest (Brunei & E.Malaysia)
EB
6377298.556
300.8017
0.00332444929666
Everest (W.Malaysia & Singapore)
ED
6377304.063
300.8017
0.00332444929666
Geodetic Reference System 1980
RF
6378137.0
298.257222101
0.00335281068118
Helmert 1906
HE
6378200.0
298.30
0.00335232986926
Hough 1960
HO
6378270.0
297.00
0.00336700336700
International 1924
IN
6378388.0
297.00
0.00336700336700
South American 1969
SA
6378160.0
298.25
0.00335289186924
World Geodetic System 1972
WD
6378135.0
298.26
0.00335277945417
World Geodetic System 1984
WE
6378137.0
298.257223563
0.00335281066475
Table G-2
Transformation Parameters (Local Geodetic to WGS84)
GPSCard
Datum ID
Datum ID
number
NAME
DX
DY
DZ
DATUM DESCRIPTION
ELLIPSOID
1
ADIND
-162
-12
206
Adindan (Ethiopia, Mali, Senegal & Sudan)
Clarke 1880
2
ARC50
-143
-90
-294
ARC 1950 (SW & SE Africa)
Clarke 1880
3
ARC60
-160
-8
-300
ARC 1960 (Kenya, Tanzania)
Clarke 1880
4
AGD66
-133
-48
148
Australian Geodetic Datum 1966
Australian National
5
AGD84
-134
-48
149
Australian Geodetic Datum 1984
Australian National
6
BUKIT
-384
664
-48
Bukit Rimpah (Indonesia)
Bessel 1841
7
ASTRO
-104
-129
239
Camp Area Astro (Antarctica)
International 1924
8
CHATM
175
-38
113
Chatum 1971 (New Zealand)
International 1924
9
CARTH
-263
6
431
Carthage (Tunisia)
Clarke 1880
10
CAPE
-136
-108
-292
CAPE (South Africa)
Clarke 1880
11
DJAKA
-377
681
-50
Djakarta (Indonesia)
Bessel 1841
12
EGYPT
-130
110
-13
Old Egyptian
Helmert 1906
13
ED50
-87
-98
-121
European 1950
International 1924
14
ED79
-86
-98
-119
European 1979
International 1924
15
GUNSG
-403
684
41
G. Segara (Kalimantan - Indonesia)
Bessel 1841
16
GEO49
84
-22
209
Geodetic Datum 1949 (New Zealand)
International 1924
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GEODETIC DATUMS