SNEO00GBR Site Information Form (site log)
International GNSS Service
See Instructions at:
https://files.igs.org/pub/station/general/sitelog_instr.txt
0. Form
Prepared by (full name) : Geodesy & Positioning (geodeticenquiries@os.uk)
Date Prepared : 2023-04-06
Report Type : UPDATE
If Update:
Previous Site Log : sneo00gbr_20220902.log
Modified/Added Sections : 11
1. Site Identification of the GNSS Monument
Site Name : St Neots
Four Character ID : SNEO
Monument Inscription :
IERS DOMES Number : 19135M002
CDP Number : (A4)
Monument Description : Galvanised steel helical pier quadpod
Height of the Monument : 1.6 m
Monument Foundation : Helical pier quadpod in sand/gravel
Foundation Depth : 4.0 m
Marker Description : Centre of mount thread/top of height marker bolt
Date Installed : 2009-03-17
Geologic Characteristic : Unknown
Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
Bedrock Condition : (FRESH/JOINTED/WEATHERED)
Fracture Spacing : (0 cm/1-10 cm/11-50 cm/51-200 cm/over 200 cm)
Fault zones nearby : No
Distance/activity : (multiple lines)
Additional Information : (multiple lines)
2. Site Location Information
City or Town : St Neots
State or Province : BEDFORDSHIRE
Country : United Kingdom of Great Britain and Northern
: Ireland (the)
Tectonic Plate : EURASIAN
Approximate Position (ITRF)
X coordinate (m) : 3918752.000
Y coordinate (m) : -7694.000
Z coordinate (m) : 5015570.000
Latitude (N is +) : +521107.34
Longitude (E is +) : -0000644.98
Elevation (m,ellips.) : 119.3
Additional Information : (multiple lines)
3. GNSS Receiver Information
3.1 Receiver Type : LEICA GRX1200+GNSS
Satellite System : GPS+GLO
Serial Number : 356254
Firmware Version : 7.50
Elevation Cutoff Setting : 5 deg
Date Installed : 2009-05-13T13:00Z
Date Removed : 2009-08-11T15:19Z
Temperature Stabiliz. : none
Additional Information : Receiver not changed - elevation cuttoff angle
: reduced to zero
3.2 Receiver Type : LEICA GRX1200+GNSS
Satellite System : GPS+GLO
Serial Number : 356254
Firmware Version : 7.50
Elevation Cutoff Setting : 0 deg
Date Installed : 2009-08-11T15:19Z
Date Removed : 2009-12-21T14:30Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.3 Receiver Type : LEICA GRX1200GGPRO
Satellite System : GPS+GLO
Serial Number : 356435
Firmware Version : 6.00
Elevation Cutoff Setting : 0 deg
Date Installed : 2009-12-21T14:40Z
Date Removed : 2010-10-19T10:40Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.4 Receiver Type : LEICA GRX1200+GNSS
Satellite System : GPS+GLO
Serial Number : 356212
Firmware Version : 7.81
Elevation Cutoff Setting : 0 deg
Date Installed : 2010-10-19T11:06Z
Date Removed : 2012-02-26T09:17Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.5 Receiver Type : LEICA GRX1200+GNSS
Satellite System : GPS+GLO
Serial Number : 356212
Firmware Version : 8.20
Elevation Cutoff Setting : 0 deg
Date Installed : 2012-02-26T09:31Z
Date Removed : 2015-06-10T10:41Z
Temperature Stabiliz. : none
Additional Information : ME firmware v4.007
3.6 Receiver Type : LEICA GRX1200+GNSS
Satellite System : GPS+GLO
Serial Number : 356212
Firmware Version : 9.20
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-06-10T11:23Z
Date Removed : 2018-05-24T08:00Z
Temperature Stabiliz. : none
Additional Information : ME firmware v6.112
3.7 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO
Serial Number : 3022936
Firmware Version : 5.1.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-05-24T08:45Z
Date Removed : 2018-10-15T14:00Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.8 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO
Serial Number : 3022936
Firmware Version : 5.2.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-10-15T14:05Z
Date Removed : 2019-08-23T09:05Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.9 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO
Serial Number : 3022936
Firmware Version : 5.3.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2019-08-23T09:10Z
Date Removed : 2020-02-28T14:30Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.10 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO
Serial Number : 3022936
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-02-28T14:35Z
Date Removed : 2021-02-04T23:59Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.11 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 3022936
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-02-05T00:00Z
Date Removed : 2021-02-08T16:20Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.12 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 3022936
Firmware Version : 5.4.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-02-08T16:25Z
Date Removed : 2021-03-12T23:59Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.13 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 3022936
Firmware Version : 5.4.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-03-13T00:00Z
Date Removed : 2022-09-02T10:25Z
Temperature Stabiliz. : none
Additional Information : Number of BDS observables increased by addition
: of ?6X observable types
:
3.14 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 3022936
Firmware Version : 5.5.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2022-09-02T10:30Z
Date Removed : CCYY-MM-DDThh:mmZ
Temperature Stabiliz. : none
Additional Information : Number of BDS observables increased by addition
: of ?6X observable types
:
3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions)
Satellite System : (GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS)
Serial Number : (A20, but note the first A5 is used in SINEX)
Firmware Version : (A11)
Elevation Cutoff Setting : (deg)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
4. GNSS Antenna Information
4.1 Antenna Type : LEIAR25 LEIT
Serial Number : 08420013
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.8742
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : LEIT
Radome Serial Number :
Antenna Cable Type : Huber&Suhner 1/2
Antenna Cable Length : 110 m
Date Installed : 2009-05-13T13:00Z
Date Removed : CCYY-MM-DDThh:mmZ
Additional Information : Antenna has been calibrated
4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions)
Serial Number : (A*, but note the first A5 is used in SINEX)
Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.)
Marker->ARP Up Ecc. (m) : (F8.4)
Marker->ARP North Ecc(m) : (F8.4)
Marker->ARP East Ecc(m) : (F8.4)
Alignment from True N : (deg; + is clockwise/east)
Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions)
Radome Serial Number :
Antenna Cable Type : (vendor & type number)
Antenna Cable Length : (m)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
5. Surveyed Local Ties
5.x Tied Marker Name :
Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
Tied Marker CDP Number : (A4)
Tied Marker DOMES Number : (A9)
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : (m)
dy (m) : (m)
dz (m) : (m)
Accuracy (mm) : (mm)
Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
Date Measured : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
6. Frequency Standard
6.1 Standard Type : INTERNAL
Input Frequency : (if external)
Effective Dates : 2009-05-13/CCYY-MM-DD
Notes : (multiple lines)
6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
Input Frequency : (if external)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
7. Collocation Information
7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
Status : (PERMANENT/MOBILE)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8. Meteorological Instrumentation
8.1.x Humidity Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy (% rel h) : (% rel h)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.2.x Pressure Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (hPa)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.3.x Temp. Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (deg C)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.4.x Water Vapor Radiometer :
Manufacturer :
Serial Number :
Distance to Antenna : (m)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.5.x Other Instrumentation : (multiple lines)
9. Local Ongoing Conditions Possibly Affecting Computed Position
9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc)
Observed Degradations : (SN RATIO/DATA GAPS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.3.x Signal Obstructions : (TREES/BUILDINGS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
10. Local Episodic Effects Possibly Affecting Data Quality
10.x Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
11. On-Site, Point of Contact Agency Information
Agency : Ordnance Survey
: Geodesy & Positioning
Preferred Abbreviation : OS
Mailing Address : Adanac Drive
: SO16 0AS Southampton
: United Kingdom of Great Britain and Northern
: Ireland (the)
Primary Contact
Contact Name : Geodesy & Positioning
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail : geodeticenquiries@os.uk
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : (multiple lines)
12. Responsible Agency (if different from 11.)
Agency : (multiple lines)
Preferred Abbreviation : (A10)
Mailing Address : (multiple lines)
Primary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : (multiple lines)
13. More Information
Primary Data Center : BKG
Secondary Data Center : BEV
URL for More Information :
Hardcopy on File
Site Map : (Y or URL)
Site Diagram : (Y or URL)
Horizon Mask : (Y or URL)
Monument Description : (Y or URL)
Site Pictures : (Y or URL)
Additional Information : (multiple lines)
Antenna Graphics with Dimensions
LEIAR25
+-------+ <-- 0.1995
/ + \
| + |
|---+-------------+---| <-- 0.1614 TCR
|-----------------------------|
|-------------------------------------|
|---------------------------------------------|
+---------------------------------------------------+
| |
| |
| |
| |
+-+---------------------------------------------------+-+
+--------------------+-------------+--------------------+ <-- 0.0320 BCR
| |
| |
+------x------+ <-- 0.0000 BPA=ARP
<-- 0.3802 -->
ARP: Antenna Reference Point
L1 : L1 Phase Center L2 : L2 Phase Center
TCR: Top of Chokering BCR: Bottom of Chokering
BPA: Bottom of Preamplifier
