GEODETICDATUMS

Available datums

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2

This log shows a list of available datums. User-defined datums can be added using the GEODETICDATUM command.

The "USER" entry in the this log is the datum set by the USERDATUM command or the USEREXPDATUM command.

Message ID: 2296

Log Type: Asynch

Recommended Input:

log geodeticdatums

Abbreviated ASCII Example:

<GEODETICDATUMS COM1 0 37.0 UNKNOWN 0 0.375 02040020 e7f2 32768

<     15

<          "WGS84" 6326 EARTH_FIXED 6378137.00 298.2572235630

<          "ITRF2000" 6656 EARTH_FIXED 6378137.00 298.2572221010

<          "ITRF2005" 6896 EARTH_FIXED 6378137.00 298.2572221010

<          "ITRF2008" 1061 EARTH_FIXED 6378137.00 298.2572221010

<          "ITRF2014" 1165 EARTH_FIXED 6378137.00 298.2572221010

<          "ITRF2020" 1322 EARTH_FIXED 6378137.00 298.2572221010

<          "ETRF2000" 1186 PLATE_FIXED 6378137.00 298.2572221010

<          "ETRF2005" 1204 PLATE_FIXED 6378137.00 298.2572221010

<          "ETRF2014" 1206 PLATE_FIXED 6378137.00 298.2572221010

<          "NAD83(NSRS2011)" 1116 PLATE_FIXED 6378137.00 298.2572221010

<          "NAD83(CSRS)" 6140 PLATE_FIXED 6378137.00 298.2572221010

<          "NAD83(PA11)" 1117 PLATE_FIXED 6378137.00 298.2572221010

<          "NAD83(MA11)" 1118 PLATE_FIXED 6378137.00 298.2572221010

<          "GDA94" 6283 PLATE_FIXED 6378137.00 298.2572221010

<          "GDA2020" 1168 PLATE_FIXED 6378137.00 298.2572221010

Field

Field Type

Description

Format

Binary Bytes

Binary Offset

1

Log header

GEODETICDATUMS header

For information about log headers, see ASCII, Abbreviated ASCII or Binary.

H

0

2

# datums

Number of datums to follow

Ulong

4

H

3

name

Name of datum

Char[32]

variable

H+4

4

epsg_code

EPSG code of datum

Ulong

4

variable

5

anchor

The datum’s anchor.

See Table: Datum Anchors.

Enum

4

variable

6

semimajor_axis

Semi-major axis of datum’s ellipsoid (m)

Double

8

variable

7

flattening

Inverse flattening of datum’s ellipsoid (unitless)

Double

8

variable

8…

Next datum offset = variable

variable

xxxx

32-bit CRC (ASCII and Binary only)

Ulong

4

variable

variable

[CR][LF]

Sentence terminator (ASCII only)