From: Robert Duval / NRCan Subject: [IGSMAIL-0506] ALGO - TRACKING PROBLEMS Date: Thu, 24 Feb 1994 13:48:30 PST ****************************************************************************** IGS Electronic Mail Thu Feb 24 13:48:30 PST 1994 Message Number 0506 ****************************************************************************** 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 ************************************** ALGO REF A (ALGA) SITE INFORMATION ************************************** 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@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@geod.emr.ca Ottawa, Ontario K1A 0E9 *****************************************************************************