Reference (base) station record
The reference station record is an optional record that provides LLA (Latitude, Longitude, and Altitude) coordinates for the reference station (base station).
The following table shows the additional records provided when the reference station record is included with Command Packet 64h.
|
Byte |
Item |
Type |
Value |
Notes |
|---|---|---|---|---|
|
0 |
RECORD TYPE |
1 (Char) |
03h |
Reference Station record. |
|
1 |
RECORD LENGTH |
1 (Char) |
25h |
Data bytes in the record, excluding bytes 0 and 1. |
|
2 |
FLAG |
1 (Char) |
00h |
Reserved (set to zero). |
|
3 |
NODE INDEX |
1 (Char) |
00h |
Reserved (set to zero). |
|
4–11 |
STATION NAME |
8 (Char) |
ASCII text |
Eight-character reference station description. |
|
12–19 |
REFERENCE LATITUDE |
8 (Double) |
Radians |
Latitude of reference station, ± π/2. |
|
20–27 |
REFERENCE LONGITUDE |
8 (Double) |
Radians |
Longitude of reference station, ± π. |
|
28–35 |
REFERENCE ALTITUDE |
8 (Double) |
Meters |
Altitude of reference station, –9999.999 ≤ h ≤ +9999.999. |
|
36–37 |
RTCM v2.x STATION ID |
2 (Short) |
0000h–03FFh |
Reference Station ID for RTCM v2.x output. |
|
38 |
CMR STATION |
1 (Char) |
00h–1Fh |
Reference Station ID for CMR output. |
The following bytes may also be included in this message, but are not required:
|
Byte |
Item |
Type |
Value |
Notes |
|---|---|---|---|---|
|
39 |
FRAME CHAR |
1 (Char) |
40h |
Indicates that bytes 39-88 contain data. |
|
40 |
STATION NAME INDICATOR |
1 (Char) |
41h |
Indicates that the Station ID (point ID) is present. |
|
41–60 |
STATION NAME |
20 (Char) |
Up to 20 ASCII characters, space-padded as required |
Transfer all 20 characters of the base point's ID to the rover station (CMR/RETBASE transfers only 4 of the characters in the STATION ID field). |
|
61 |
STATION CODE INDICATOR |
1 (Char) |
42h |
Indicates that the Feature Code field is present. |
|
62–77 |
STATION CODE |
16 (Char) |
Up to 16 ASCII characters, space-padded as required |
Transfer all 16 characters of the base point's feature code to the rover station. |
|
78 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
79 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
80 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
81 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
82 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
83 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
84 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
85 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
86 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
87 |
FLAG |
1 (Char) |
20h |
Reserved (set to 0x20). |
|
88 |
FRAME CHAR |
1 (Char) |
40h |
Terminates string. |
|
89–90 |
RTCM v3.x STATION ID |
2 (Short) |
0000h–0FFFh |
Reference Station ID for RTCM v3.x output. |