NTRIP Demo

SatRef Launch to Gov’t users21 June 2006Kenny CHAN – ALS/G(1)

Why NTRIP?

Using DGPS / RTK Require Real-time Delivery of GPS data & corrections

Existing modes of delivery: 1-to-1 connection – GSM/Radio linkage Radio Broadcast – e.g. Kau Yi Chau DGPS Satellites – e.g. WAAS Geo-stationary Satellites SatRef

GSM Connection GPRS with customized Pocket PC program

Why NTRIP?

Using Internet NTRIP – “Networked Transport of RTCM in Internet Protoc

ol” RTCM standard since September 2004 Open, generic, non-proprietary application-level protocol

Advantage of using Internet Ubiquitous: Anytime, Anywhere, Live! Network independent

Wired Internet via Phone/Data Line / Power Line / Cable TV … etc. Wireless Internet via GPRS / EDGE / Wi-Fi / 3G / HSDPA … etc.

Device independent PC / Notebook / Tablet PC / PDA / 2G/3G Mobile phones / UMPC…

Using NTRIP

Hardware – Connect to Internet Any PC / PDA / Mobile devices connected to Internet

Software – NTRIP Client Demo: “GNSS Internet Radio for Windows” Others: “GNSS Internet Radio for PPC”, “ArcNtrip”, “

mobile-ntrip” … etc GPS Receivers

DGPS: e.g. Garmin e-Trex Summit receivers … RTK: e.g. Leica GPS System 500 …

Using NTRIP

NTRIP-ready GPS Instrumente.g. Leica GPS System 1200 + GSM/GPRS c

onnection

NTRIP Client Demo

Demo:Get RTK Corrections from a GPS Reference

Station in Frankfurt, Germany Procedures:

1. Connect the PC to Internet2. Download a NTRIP Client software

e.g. GNSS Internet Radio by BKG (Freeware)3. Install and Run the program

NTRIP Client Demo

4. Enter NTRIPCaster Information Host Name, Port Number (usually 80 / 2101) Username, Password

5. Get and Select Stream from SourceTable Browse the Sources available Worldwide Download the stream

6. Decode the Received Data using RTCM decoder

DEMO START