b93b281dabd5b73cc73ecceed12410ac.ppt
- Количество слайдов: 36
Hong Kong Satellite Positioning Reference Station Network (Sat. Ref) Presented by : Ben LI, LS/G(HK&Is. )
Introduction of Sat. Ref. – 12 CORSs Control Centre Data Centre Clients
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Distribution Diagram ___ ___ ___
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Mui Wo Satellite Positioning Reference Station (HKMW) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Ngong Ping Satellite Positioning Reference Station (HKNP) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Peng Chau Satellite Positioning Reference Station (HKPC) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Obelisk Hill Satellite Positioning Reference Station (HKOH) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Stonecutter Satellite Positioning Reference Station (HKSC) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Shap Sze Heung Satellite Positioning Reference Station (HKSS) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Wong Shek Satellite Positioning Reference Station (HKWS) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Lam Tei Satellite Positioning Reference Station (HKLT) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Sha Tin Satellite Positioning Reference Station (HKST) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Kam Tin Satellite Positioning Reference Station (HKKT) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Fanling Satellite Positioning Reference Station (HKFN) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Siu Lang Shui Satellite Positioning Reference Station (HKSL) Back to Site Index
Introduction of Sat. Ref. - 12 Continuously Operating Reference Stations (CORS) Reference Stations Configuration *9 Stations at the top of hill *3 Stations at the top of roof *2 Reference Stations within 10 km
Introduction of Sat. Ref. – CORS Hardware Equipment Box GRX 1200 Pro GPS Receiver CISCO Router and Hubs Leased-line Modem Uninterrupted Power Supply
Introduction of Sat. Ref. – CORS Hardware Radome + AT 504 Met. Sensor Tilt Sensor
Introduction of Sat. Ref. – CORS Hardware Choke Ring Antenna Prevent low elevation signals reaching the antenna
Video Show on GPS Reference Station facilities Hong Kong Obelisk Hill
Introduction of Sat. Ref. – Data Centre 12 CORSs Control Centre Data Centre Clients
Introduction of Sat. Ref. – Data Centre at Somerset House, Quarry Bay
Introduction of Sat. Ref. – Data Centre Functions ØTo receive and manipulate GPS data ØTo output Position-fix Services Server ØReference Station Management Server ØDatabase & Positioning Server ØWeb Server (Each set of server has 2 computers with high availability solution)
Introduction of Sat. Ref. – Data Centre (2) Two Main System Software Ø SPIDER -- Collect GPS data from the 12 Ref. Stations Ø GNSMART -- Disseminate GPS correctional signals such as RTK, DGPS
SPIDER – Download GPS data
SPIDER – Download GPS data
GNSMART- Generate real time correction data
GNSMART- Real time disseminate data to user
Introduction of Sat. Ref. – Data Centre Other System Software Ø PODIUM -- Integrity monitoring of raw GPS data Ø STRIM -- Integrity monitoring of DGPS data Ø POWERMANAGER -- Manage and control continuous power supply
PODIUM Ø Integrity Monitoring GPS data in every 1 hour Form baseline from HKSC (Stonecutter) to rest of 11 CORSs in every 1 hour Compare baselines (known/observed)
STRIM Ø Integrity Monitoring DGPS data Baseline checking between HKSC (Stonecutter ) with IM station at Fanling
POWERMANAGERIITM Ø Manage and control continuous power supply – Real-time monitoring of power system – Automatic Alarm Indication Sending e-mail when power fails
Introduction of Sat. Ref. – Control Centre 12 CORSs Control Centre Data Centre Clients
Introduction of Sat. Ref. – Control Centre at 24/F, North Point Gov’t Offices Ø 4 PCs to remote control the System Ø Historic GPS Data Archive Ø High precision checking the System by Bernese
Video Show on GPS Reference Station facilities Control Centre at 24/F NPGO Produced by Repro. Section
Thank You ~ End ~