ALKS00LVA Site Information Form (site log v2.0)
International GNSS Service
See Instructions at:
https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt
0. Form
Prepared by (full name) : LATPOS TEAM (latpos@lgia.gov.lv)
Date Prepared : 2024-06-12
Report Type : UPDATE
If Update:
Previous Site Log : alks00lva_20240201.log
Modified/Added Sections : 6.1, 13
1. Site Identification of the GNSS Monument
Site Name : ALKS
Nine Character ID : ALKS00LVA
Monument Inscription : Self centering antenna mount
IERS DOMES Number : 10731M002
CDP Number : (A4)
Monument Description : Concreate foundation, stainless steel monument
Height of the Monument : 3 m
Monument Foundation : Concreate
Foundation Depth : 3 m
Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
Date Installed : 2018-04-20T12:00Z
Geologic Characteristic : SAND
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 : (YES/NO/Name of the zone)
Distance/activity : (multiple lines)
Additional Information : (multiple lines)
2. Site Location Information
City or Town : Aluksne
State or Province : Vidzeme
Country or Region : LVA
Tectonic Plate : EURASIAN
Approximate Position (ITRF)
X coordinate (m) : 3064941.773
Y coordinate (m) : 1564041.436
Z coordinate (m) : 5352595.189
Latitude (N is +) : +572622.77
Longitude (E is +) : +0270206.88
Elevation (m,ellips.) : 221.0
Additional Information : (multiple lines)
3. GNSS Receiver Information
3.1 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.02.386
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-04-20T13:00Z
Date Removed : 2020-02-25T09:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.2 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.31.101
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-02-25T09:00Z
Date Removed : 2021-07-14
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware update
3.3 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.50/7.710
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-07-14
Date Removed : 2021-11-02
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware version update
3.4 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.51/7.710
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-11-02
Date Removed : 2022-01-17
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware version update
3.5 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.52/7.711
Elevation Cutoff Setting : 0 deg
Date Installed : 2022-01-17
Date Removed : 2022-08-10
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware update
3.6 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.60/7.811
Elevation Cutoff Setting : 0 deg
Date Installed : 2022-08-10
Date Removed : 2023-01-19
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware update
3.7 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.61/7.811
Elevation Cutoff Setting : 0 deg
Date Installed : 2023-01-19
Date Removed : 2024-01-16
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : Firmware update
3.8 Receiver Type : LEICA GR30
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 1705427
Firmware Version : 4.70/7.813
Elevation Cutoff Setting : 0 deg
Date Installed : 2024-01-16
Date Removed : CCYY-MM-DDThh:mmZ
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
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 : LEIAR20 LEIM
Serial Number : 19203009
Antenna Reference Point : BAM
Marker->ARP Up Ecc. (m) : 0.0000
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : LEIM
Radome Serial Number :
Antenna Cable Type : coaxial
Antenna Cable Length : 30 m
Date Installed : 2018-04-20T13:00Z
Date Removed : CCYY-MM-DDThh:mmZ
Additional Information : (multiple lines)
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 : 2019-01-17/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 : Latvian Geospatial Information Agency
Preferred Abbreviation : LGIA
Mailing Address : Ojara Vaciesa street 43
: LV 1004 Riga
: Latvia
Primary Contact
Contact Name : LATPOS TEAM
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail : latpos@lgia.gov.lv
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : State Network. Post processing data without
: charge.
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 : BEV
Secondary Data Center : BKG
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
LEIAR20
+-----+ <-- 0.1613
/ \
| |
+----------------+-----------+----------------+ <-- 0.1113 TCR
| |
| |
| |
| |
+-+---------------------------------------------+-+
+------------------+-----------+------------------+ <-- 0.0323 BCR
| |
| |
+-----x-----+ <-- 0.0013 BPA
+-+ <-- 0.0000 BAM=ARP
<-- 0.3200 -->
