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Hong Kong Satellite Positioning Reference Station Network (SatRef) Presented by : Ben LI, LS/G(HK&Is.)

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Presentation on theme: "Hong Kong Satellite Positioning Reference Station Network (SatRef) Presented by : Ben LI, LS/G(HK&Is.)"— Presentation transcript:

1 Hong Kong Satellite Positioning Reference Station Network (SatRef) Presented by : Ben LI, LS/G(HK&Is.)

2 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

3 Introduction of SatRef
Introduction of SatRef Continuously Operating Reference Stations (CORS) Distribution Diagram ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

4 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

5 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

6 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

7 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

8 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

9 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

10 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

11 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

12 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

13 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

14 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

15 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

16 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

17 Introduction of SatRef. – CORS Hardware
Equipment Box GRX1200Pro GPS Receiver CISCO Router and Hubs Leased-line Modem Uninterrupted Power Supply

18 Introduction of SatRef. – CORS Hardware
Met. Sensor Tilt Sensor Radome + AT504

19 Introduction of SatRef. – CORS Hardware
Choke Ring Antenna Prevent low elevation signals reaching the antenna

20 GPS Reference Station facilities
Video Show on GPS Reference Station facilities Hong Kong Obelisk Hill

21 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

22 Introduction of SatRef. – Data Centre
Data Centre at Somerset House, Quarry Bay

23 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)

24 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

25 SPIDER – Download GPS data

26 SPIDER – Download GPS data

27 GNSMART- Generate real time correction data

28 GNSMART- Real time disseminate data to user

29 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

30 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)

31 STRIM Integrity Monitoring DGPS data
Baseline checking between HKSC (Stonecutter ) with IM station at Fanling

32 POWERMANAGERIITM Manage and control continuous power supply
Real-time monitoring of power system Automatic Alarm Indication Sending when power fails

33 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

34 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

35 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

36 Thank You ~ End ~


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