18 Continuously Operating Reference Stations (CORS) of SatRef


There are 18 CORS in Hong Kong. Nine stations are built at hilltop with a 5m high pillar and fenced to avoid disturbance. The other nine stations are installed on building rooftop. The separation of the reference stations is about 10 to 15km. This is to provide at least two stations within 10km for users in most of the area in Hong Kong.


Equipment of Reference Station

  • Station: HKSL, HKOH, HKST, HKKT, HKSC, HKSS, HKNP, HKPC, HKWS & HKLT

    • Receiver: Leica GR50

    • Antenna: Leica AR25.R4 + LEIT

  • Station: HKKS, HKLM & HKTK

    • Receiver: Leica GR50

    • Antenna: Trimble 59800.00 + SCIS

  • Station: T430

    • Receiver: Leica GR50

    • Antenna: Trimble 59800.00 + SCIT

  • Station: HKMW

    • Receiver: Trimble NetR9

    • Antenna: Leica AR25.R4 + LEIT

  • Station: HKFN

    • Receiver: Trimble NetR9

    • Antenna: Leica AT504 + LEIS

  • Station: HKCL & HKQT

    • Receiver: Trimble NetR9

    • Antenna: Trimble 59800.00 + SCIT

  • Meteorological sensor:

    • Paroscientific Met4A (HKKS, HKKT, HKLM, HKLT, HKMW, HKPC, HKSC, HKSL, HKSS, HKST, HKTK, HKWS & T430)

    • Vaisala WXT534 (HKNP & HKOH)

  • Tilt sensor: Applied Geomechanics MD900-T/TH (for hilltop station)

  • Monument:

    • Concrete pillar (for hilltop station)

    • Concrete supporting structure (for rooftop station)

    • Metal supporting structure (for rooftop station)

  • Concrete equipment box (for hilltop station)

  • Concrete platform for protecting the station from the bush fire and lost of supporting soil

  • Lightning protection system

  • Temperature control device: Temperature sensor and Fans

  • Communication device: 4G Router

  • Power supply: Uninterruptible power supply (UPS) supported

  • Insect repellent system

  • Security fence


Hilltop SatRef Stations

The nine hilltop stations are Kam Tin Station (HKKT), Lam Tei Station (HKLT), Mui Wo Station (HKMW), Ngong Ping Station (HKNP), Obelisk Hill Station (HKOH), Siu Lang Shui Station (HKSL), Shap Sze Heung Station (HKSS), Sha Tin Station (HKST) and Wong Shek Station (HKWS).


Photo of Ngong Ping Station Photo of Ngong Ping Station (HKNP)


Rooftop SatRef Stations

The nine rooftop stations are T430 Station (T430), Fanling Station (HKFN), Quarry Bay Station (HKQT), Chek Lap Kok Station (HKCL), Stonecutters Island Station (HKSC), Peng Chau Station (HKPC), Sha Tau Kok Station (HKTK), Kau Sai Chau Station (HKKS) and Lamma Island Station (HKLM).


Photo of Peng Chau Station Photo of Peng Chau Station (HKPC)