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Last modified
1/25/2010 6:46:18 PM
Creation date
10/5/2006 12:41:18 AM
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Floodplain Documents
County
Statewide
Community
State of Colorado
Basin
Statewide
Title
The Colorado Satellite-Linked Water Resources Monitering System Annual Status Report 1986-87
Date
6/1/1987
Prepared For
State of Colorado
Prepared By
Office of The State Engineer
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />basis to the City of Aurora. A single transmission slot was provided on a <br />temporary basis to both the Bureau of Reclamation -San Juan Chama Project, <br />and the Bureau of Reclamation - Salt Lake City. Seven slots were designated <br />to the DWR Division offices for DCP testing. <br /> <br />NOAA-NESDIS launched its last available GOES spacecraft (GOES-7) on <br />February 26, 1987. It was located in the GOES-EAST position at 750W equa- <br />torial. GOES-CENTRAL (GOES-6) was relocated to the WEST position at 1360W <br />equatorial. The new GOES series prototype, scheduled for operation in 1990, <br />will have narrower bandwidths to accommodate additional channels, and <br />increased transmission rates to handle increased. data volume. Minor modifica- <br />tions to existing DCP's may be required at that time, Efforts by NESDIS to <br />establish a Standard Hydrological Exchange Format (SHEF) are nearing comple- <br />tion. Sutron has agreed to implement SHEF and will update the Hydromet <br />software accordingly. NESDIS upgraded the current DCS ground system capacity <br />by nearly 20%. This was necessary as the system was approaching saturation. <br />The saturation level was increased to 7,196 active DCP's. At the end of FY <br />86-87, there were 7,590 transmission assignments with 5,733 scheduled for <br />transmission with 4,560 active.. The difference in number between scheduled <br />and active DCP's is due to seasonally operated DCP's. NESDIS announced plans <br />for an improved DCS ground system to be operational by 1990. System capacity <br />would be improved to 100,000 DCP's. Data transfers, aside from privately <br />operated GOES receive sites, will be accomplished through the NOAA-PORT system <br />utilizing the OOMSAT communications system and low-cost Direct Readout <br />Terminals (DROTS). <br /> <br />B. System Operations <br /> <br />Data measurements are taken at the remote stations at 15-minute inter- <br />vals. These data are stored and transmitted at 4-hour intervals in the <br />standard transmission mode. The Division of Water Resources is authorized by <br />NOAA-NESDIS and the Federal Communications Commission to transmit on <br />GOES-WEST, channel 062, 401.7925 MHz, with a bandwidth of 1.5 KHz. Random <br />reporting (emergency transmissions) parameters are programmed directly into <br />the DCP, including an alert level, warning level, data rate-of-change <br />criteria, and the desired emergency transmission interval. When these user <br />defined thresholds are met or surpassed, the random reporting mode activates. <br />Random transmissions, down to 2-minute intervals, are made to update the user <br />of significant hydrologic conditions. The computer can then signal interested <br />users. This can be accomplished by sending a message to a remote terminal, <br />setting off an alarm at a remote terminal, or by calling a phone and giving a <br />voice synthesized message to the answerer. <br /> <br />T~e system operates on a continuous basis and can be accessed by computer <br />termi nal vi a any phone 1 i ne. The VAX 11/750 is equi pped with 32 modems, <br />enabling the handling of 32 users simultaneously. The Division of Water <br />Resources has reached an agreement with the Northern Colorado Water Conser- <br />vancy District (Loveland) to util ize their down1 ink as a. backup. Each <br />downlink will be programmed to receive and process the other entities' data <br />transmissions. The real-time data will be stored on-line for a minimum of <br />five days. After five days, the data will be dumped unless requested to be <br /> <br />-13- <br /> <br />-I' <br />
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