[IGSMAIL-0506] ALGO - TRACKING PROBLEMS
Robert
Robert
Thu Feb 24 13:48:30 PST 1994
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IGS Electronic Mail Thu Feb 24 13:48:30 PST 1994 Message Number 0506
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Author: Robert Duval / NRCan
Subject: ALGO - TRACKING PROBLEMS
Station ALGO Domes # 40104M002
Because of receiver malfunction no data have been available from ALGO since
Feb 23 (DOY 54) 12:00 UT. The receiver is not expected to be replaced
until Feb 28 (DOY 59). Data from an alternate station ALGO REF A (ALGA) at
the same site is made available as a temporary replacement. The data from
ALGA will be forwarded to CDDIS and is available from NRCan anonymous FTP
address macs.geod.emr.ca under the sub-directory /pub/gps/rinex/algorefa.
COORDINATES (ITRF92 epoch 1994.0)
ALGA (ALGO REF A) : X: 918127.568
Y: -4346061.957
Z: 4561984.264
ALGO (# 40104M002): X: 918129.578
Y: -4346071.246
Z: 4561977.828
DIFFERENTIAL COORDINATES
dX dY dZ
ALGA (ALGO REF A) to ALGO (# 40104M002) : 2.010 -9.289 -6.436
Note that ALGA is operating on the same H-Maser clock as ALGO
Additional info on ALGA follows
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ALGO REF A (ALGA) SITE INFORMATION
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0. Form
Prepared by : ROBERT DUVAL
date : 24-FEB-94
Report type : NEW
1. Site Identification of the GPS Monument
Site name : ALGO REF A
4 char ID : ALGA
Monu ins : 683100A
Iers domes no :
CDP Number :
Date : 16-FEB-94
Additional Information : Monument is a brass tablet in bedrock
2. Site Location:
City : ALGONQUIN PARK
Country : CANADA
Tectonic Plate : NOAM
Additional Information : Site known as Algonquin Space Complex,
formerly Algonquin Radio Astronomical
Observatory (ARO)
3. GPS Receiver(s):
Type : ROGUE SNR-8
Serial Number : R115
Firmware Version : MEENIX 7.5
Date : 16-FEB-94 20:00:00 to Present
4. GPS Antenna(s):
Type : DORNE-MARGOLIN B
Serial Number : 111
Vertical Antenna Height: 1.503
Antenna Ref. Point : BOTTOM OF CHOKE RINGS
Date : 16-FEB-94 20:00:00 to Present
The antenna height is measured from the GPS monument to the antenna
reference point (ARP) as it has been defined in the graphic (item 10).
5. Local Site Tie(s):
Monument CDP DOMES Components Source Accur. Date
Inscrip. No. No. dX dY dZ mm yy_mm_dd
883160 ALGO 40104M002 2.010 -9.289 -6.436 PROVISIONAL
Differential coordinates are from the GPS monument to the reference and
other monuments. The components are parallel to the XYZ-Axes of the
Global Geocentric Reference System ITRF (WGS-84).
Accuracy: estimated accuracy of local survey (millimeters).
6. Frequency standard - Mark with "X"
H-maser / X / Cesium / / Rubidium / / Internal/ /
Date : 16-FEB-94 20:00:00
7. Collocation ( "P" for permanent, "M" for mobile collocation)
SLR / M / VLBI / P / DORIS / / PRARE / /
Other (specify) :
8. On site Agency Information
Agency : GEODETIC SURVEY OF CANADA
Contact : Robert Duval
Address : 615 Booth St., Ottawa, Ont.
CANADA, K1A 0E9
Telephone : 613-947-2786
E-mail : duval at geod.emr.ca
Fax : 613-995-3215
9. Responsible Operations Agency: see No. 8
10. Graphic(s) corresponding to antenna type on site
Rogue: DORNE MARGOLIN B (Allen Osborne Design)
--------
/ + \ <-- 0.096 L2
| + | <-- 0.078 L1
+--------------+--------------+--------------+ <-- 0.070 TCR
| |
| |
| |
| |
+---------------------x----------------------+ <-- 0.000 ARP = BCR
| |
+--------------+ <-- -0.011
| | | |
<-- 0.351 -->
Acronyms:
ARP: Antenna Reference Point
L1 : L1 Phase Center L2 : L2 Phase Center
TCR: Top of Choke ring BCR: Bottom of Choke ring
TGP: Top of Ground Plane BGP: Bottom of Ground Plane
TPA: Top of Preamplifier BPA: Bottom of Preamplifier
********************* END OF FORM ***********************
--
Robert Duval
Geodetic Survey Division Tel: (613) 947-2786
Natural Resources Canada (NRCan) Fax: (613) 995-3215
615 Booth Street E-mail: duval at geod.emr.ca
Ottawa, Ontario
K1A 0E9
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