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Hong Kong Satellite Positioning Reference Station Network (SatRef) Presented by : Ben LI, LS/G(HK&Is.)
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Introduction of SatRef. – 12 CORSs
Control Centre 2.2.1 參考站管理伺服器 (Reference Station Management Server) 參考站管理伺服器負責管理和監控參考站之運作。伺服器內裝有多套軟件, 包括POWERMANAGERIITM、SPIDER、GQC 和STRIM 等處理不同的工作。 POWERMANAGERIITM 電力監控軟件監控台站的不間斷電源是否正常運作。 SPIDER 參考站管理軟件每10 分鐘從各參考站下載GPS 的原始數據、氣象資料 (包括溫度、大氣壓力、相對濕度),及傾斜儀數據;定時下載的數據會分類存 檔於數據庫伺服器。另外、SPIDER 軟件亦透過在線不斷監控各參考站接收GPS 數據的功能和網絡傳輸活動。若發現數據傳輸失效,SPIDER 軟件會發出警報, 叫喚系統寄發警報電子郵件予系統操作員之傳呼機或流動電話。若數據傳輸正 常,SPIDER 軟件中的定位組件(Positioning Module)會即時解算每個參考站與其 鄰近兩個參考站的基線距離,把成果送至GQC 軟件,以圖表形式表達成果,讓 系統操作員作初步監擦從各參考站下載的GPS 數據是否正常。此外、參考站管 理伺服器亦對系统所提供的差分DGPS 資料進行監控,STRIM 差分監測軟件從昂 船洲參考站(或備緩的粉嶺參考站或坪洲參考站)提取差分DGPS 資料,送往系统 差分完善性監測站(DGPS Integrity Monitoring, IM Station),IM 站即時解算差分成 果,送回數據中心,用GQC 軟件以圖表形式表達,監擦DGPS 資料是否正常。 2.2.2 數據庫及定位伺服器 (Database & Positioning Server) 數據庫及定位伺服器負責兩方面的功能,一為儲存參考站下載之數據,以 GPS 數據為例,系统每天從每一台參考站收取6 X 24 共144 個載有10 分鐘RINEX 數據的檔案,一天完結時系統會將這些檔案組合成一個載有24 小時RINEX 數據 的檔案,編入相關的資料夾儲存。數據庫及定位伺服器內保存了90 天最近期的 資料,用戶可於網上下載三個月內的RINEX 數據。此伺服器的另一功能,是透 過GNSMART 軟件,在線從各參考站提取GPS 數據,模擬各項誤差的數值,然 後再按用戶的位置提供各類不同的實時定位服務。有關系統所提供之綜合性定位 服務,本文稍後部分會詳加介紹。 Data Centre Clients
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Introduction of SatRef
Introduction of SatRef Continuously Operating Reference Stations (CORS) Distribution Diagram ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
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Mui Wo Satellite Positioning Reference Station (HKMW)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Mui Wo Satellite Positioning Reference Station (HKMW) Back to Site Index
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Ngong Ping Satellite Positioning Reference Station (HKNP)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Ngong Ping Satellite Positioning Reference Station (HKNP) Back to Site Index
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Peng Chau Satellite Positioning Reference Station (HKPC)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Peng Chau Satellite Positioning Reference Station (HKPC) Back to Site Index
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Obelisk Hill Satellite Positioning Reference Station (HKOH)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Obelisk Hill Satellite Positioning Reference Station (HKOH) Back to Site Index
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Stonecutter Satellite Positioning Reference Station (HKSC)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Stonecutter Satellite Positioning Reference Station (HKSC) Back to Site Index
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Shap Sze Heung Satellite Positioning Reference Station (HKSS)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Shap Sze Heung Satellite Positioning Reference Station (HKSS) Back to Site Index
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Wong Shek Satellite Positioning Reference Station (HKWS)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Wong Shek Satellite Positioning Reference Station (HKWS) Back to Site Index
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Lam Tei Satellite Positioning Reference Station (HKLT)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Lam Tei Satellite Positioning Reference Station (HKLT) Back to Site Index
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Sha Tin Satellite Positioning Reference Station (HKST)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Sha Tin Satellite Positioning Reference Station (HKST) Back to Site Index
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Kam Tin Satellite Positioning Reference Station (HKKT)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Kam Tin Satellite Positioning Reference Station (HKKT) Back to Site Index
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Fanling Satellite Positioning Reference Station (HKFN)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Fanling Satellite Positioning Reference Station (HKFN) Back to Site Index
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Siu Lang Shui Satellite Positioning Reference Station (HKSL)
Introduction of SatRef. - 12 Continuously Operating Reference Stations (CORS) Siu Lang Shui Satellite Positioning Reference Station (HKSL) Back to Site Index
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Reference Stations Configuration
Introduction of SatRef 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
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Introduction of SatRef. – CORS Hardware
Equipment Box GRX1200Pro GPS Receiver CISCO Router and Hubs Leased-line Modem Uninterrupted Power Supply
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Introduction of SatRef. – CORS Hardware
Met. Sensor Tilt Sensor Radome + AT504
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Introduction of SatRef. – CORS Hardware
Choke Ring Antenna Prevent low elevation signals reaching the antenna
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GPS Reference Station facilities
Video Show on GPS Reference Station facilities Hong Kong Obelisk Hill
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Introduction of SatRef. – Data Centre
12 CORSs Control Centre 2.2.1 參考站管理伺服器 (Reference Station Management Server) 參考站管理伺服器負責管理和監控參考站之運作。伺服器內裝有多套軟件, 包括POWERMANAGERIITM、SPIDER、GQC 和STRIM 等處理不同的工作。 POWERMANAGERIITM 電力監控軟件監控台站的不間斷電源是否正常運作。 SPIDER 參考站管理軟件每10 分鐘從各參考站下載GPS 的原始數據、氣象資料 (包括溫度、大氣壓力、相對濕度),及傾斜儀數據;定時下載的數據會分類存 檔於數據庫伺服器。另外、SPIDER 軟件亦透過在線不斷監控各參考站接收GPS 數據的功能和網絡傳輸活動。若發現數據傳輸失效,SPIDER 軟件會發出警報, 叫喚系統寄發警報電子郵件予系統操作員之傳呼機或流動電話。若數據傳輸正 常,SPIDER 軟件中的定位組件(Positioning Module)會即時解算每個參考站與其 鄰近兩個參考站的基線距離,把成果送至GQC 軟件,以圖表形式表達成果,讓 系統操作員作初步監擦從各參考站下載的GPS 數據是否正常。此外、參考站管 理伺服器亦對系统所提供的差分DGPS 資料進行監控,STRIM 差分監測軟件從昂 船洲參考站(或備緩的粉嶺參考站或坪洲參考站)提取差分DGPS 資料,送往系统 差分完善性監測站(DGPS Integrity Monitoring, IM Station),IM 站即時解算差分成 果,送回數據中心,用GQC 軟件以圖表形式表達,監擦DGPS 資料是否正常。 2.2.2 數據庫及定位伺服器 (Database & Positioning Server) 數據庫及定位伺服器負責兩方面的功能,一為儲存參考站下載之數據,以 GPS 數據為例,系统每天從每一台參考站收取6 X 24 共144 個載有10 分鐘RINEX 數據的檔案,一天完結時系統會將這些檔案組合成一個載有24 小時RINEX 數據 的檔案,編入相關的資料夾儲存。數據庫及定位伺服器內保存了90 天最近期的 資料,用戶可於網上下載三個月內的RINEX 數據。此伺服器的另一功能,是透 過GNSMART 軟件,在線從各參考站提取GPS 數據,模擬各項誤差的數值,然 後再按用戶的位置提供各類不同的實時定位服務。有關系統所提供之綜合性定位 服務,本文稍後部分會詳加介紹。 Data Centre Clients
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Introduction of SatRef. – Data Centre
Data Centre at Somerset House, Quarry Bay
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Introduction of SatRef. – Data Centre
Functions To receive and manipulate GPS data To output Position-fix Services Server Reference Station Management Server Database & Positioning Server Web Server (Each set of server has 2 computers with high availability solution)
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Introduction of SatRef. – Data Centre (2)
Two Main System Software SPIDER -- Collect GPS data from the 12 Ref. Stations GNSMART -- Disseminate GPS correctional signals such as RTK,DGPS
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SPIDER – Download GPS data
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SPIDER – Download GPS data
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GNSMART- Generate real time correction data
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GNSMART- Real time disseminate data to user
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Introduction of SatRef. – Data Centre
Other System Software PODIUM -- Integrity monitoring of raw GPS data STRIM -- Integrity monitoring of DGPS data POWERMANAGER -- Manage and control continuous power supply
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PODIUM Integrity Monitoring GPS data in every 1 hour
Form baseline from HKSC (Stonecutter) to rest of 11 CORSs in every 1hour Compare baselines (known/observed)
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STRIM Integrity Monitoring DGPS data
Baseline checking between HKSC (Stonecutter ) with IM station at Fanling
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POWERMANAGERIITM Manage and control continuous power supply
Real-time monitoring of power system Automatic Alarm Indication Sending when power fails
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Introduction of SatRef. – Control Centre
12 CORSs Control Centre 2.2.1 參考站管理伺服器 (Reference Station Management Server) 參考站管理伺服器負責管理和監控參考站之運作。伺服器內裝有多套軟件, 包括POWERMANAGERIITM、SPIDER、GQC 和STRIM 等處理不同的工作。 POWERMANAGERIITM 電力監控軟件監控台站的不間斷電源是否正常運作。 SPIDER 參考站管理軟件每10 分鐘從各參考站下載GPS 的原始數據、氣象資料 (包括溫度、大氣壓力、相對濕度),及傾斜儀數據;定時下載的數據會分類存 檔於數據庫伺服器。另外、SPIDER 軟件亦透過在線不斷監控各參考站接收GPS 數據的功能和網絡傳輸活動。若發現數據傳輸失效,SPIDER 軟件會發出警報, 叫喚系統寄發警報電子郵件予系統操作員之傳呼機或流動電話。若數據傳輸正 常,SPIDER 軟件中的定位組件(Positioning Module)會即時解算每個參考站與其 鄰近兩個參考站的基線距離,把成果送至GQC 軟件,以圖表形式表達成果,讓 系統操作員作初步監擦從各參考站下載的GPS 數據是否正常。此外、參考站管 理伺服器亦對系统所提供的差分DGPS 資料進行監控,STRIM 差分監測軟件從昂 船洲參考站(或備緩的粉嶺參考站或坪洲參考站)提取差分DGPS 資料,送往系统 差分完善性監測站(DGPS Integrity Monitoring, IM Station),IM 站即時解算差分成 果,送回數據中心,用GQC 軟件以圖表形式表達,監擦DGPS 資料是否正常。 2.2.2 數據庫及定位伺服器 (Database & Positioning Server) 數據庫及定位伺服器負責兩方面的功能,一為儲存參考站下載之數據,以 GPS 數據為例,系统每天從每一台參考站收取6 X 24 共144 個載有10 分鐘RINEX 數據的檔案,一天完結時系統會將這些檔案組合成一個載有24 小時RINEX 數據 的檔案,編入相關的資料夾儲存。數據庫及定位伺服器內保存了90 天最近期的 資料,用戶可於網上下載三個月內的RINEX 數據。此伺服器的另一功能,是透 過GNSMART 軟件,在線從各參考站提取GPS 數據,模擬各項誤差的數值,然 後再按用戶的位置提供各類不同的實時定位服務。有關系統所提供之綜合性定位 服務,本文稍後部分會詳加介紹。 Data Centre Clients
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Introduction of SatRef. – Control Centre
Control Centre at 24/F, North Point Gov’t Offices 4 PCs to remote control the System Historic GPS Data Archive High precision checking the System by Bernese Left Computer: GNSMART Program was running Right Computer: SmartMon Program was running
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Control Centre at 24/F NPGO Produced by Repro. Section
Video Show on GPS Reference Station facilities Control Centre at 24/F NPGO Produced by Repro. Section
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Thank You ~ End ~
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