Electronic Navigation Equipment, Services and Consultancy

Conversion of Raw Observation Data and Navigation Message Data to RINEX

If your GPS/ GLONASS receiver outputs raw measurements such as pseudorange, (integrated) carrier phase, Doppler, and/ or satellite navigation message data such as satellite ephemeris parameters, satellite clock correction parameters, iono delay parameters, you can calculate (differential) position.

Position calculation software packages often require input of measurement data and navigation message data in RINEX, or the Receiver Independent Exchange Format (http://www.ngs.noaa.gov/CORS/Rinex2.html). RINEX supports six output file types:

1. Observation data file: contains measurement data
2. Navigation message file: contains ephemeris, sat clock and iono parameters
3. Meteorological data file: meteo data (ambient pressure, temperature and humidity) for high accuracy post processing
4. GLONASS navigation message file
5. GEO navigation message file (WAAS, EGNOS geostationary satellites)
6. Satellite and receiver clock data file

High end receivers often output their data directly in the RINEX format, or are offered with software to convert the receiver data to RINEX. Low end receivers such as handheld and OEM receivers usually don't.

Many (geodetic) reference stations (see e.g. http://www.ngs.noaa.gov/CORS/ for the USA, and there are many reference station in other parts of the world) deliver data in the RINEX format. You can download observation data and/ or navigation message data from one or more reference station for differential processing of your receiver data.

Your low end receiver may be supported by TEQC: The Toolkit for GPS/GLONASS Data (http://www.unavco.org/facility/software/teqc/teqc.html). Use this freeware to convert your data to RINEX, and check your data quality.

If  TEQC does not support your receiver, or if you have other reasons not to use TEQC, we may be able to help you.

Currently we have converter packages for the following single frequency (L1) receivers:

Receiver	Price Euro	Obs. data ID input	Nav. mess. ID input	Obs. data file output	Nav. mess. file output
SiRF I receivers	60	5	8	C1+S1+D1+L1	Eph+Clock+Iono
SiRF II, III , IV, V receivers	60	28	8	C1+S1+D1+L1	Eph+Clock+Iono
Blue Logger	25	raw data	n.a.	C1+L1+D1	none
u-blox 5, 6, Antaris 4, Antaris	60	RXM-RAW	RXM-SFRB	C1+S1+L1+D1	Eph+Clock+Iono
CMC Allstar/ Superstar	60	23	22	C1+S1+L1	Eph+Clock+Iono
Garmin OEM/Sensors	60	41	42	C1+S1+L1	Eph+Clock
Rockwell/ Conexant Jupiter	60	1102	1102	C1+S1+L1+D1	Eph+Clock+Iono
Motorola Oncore VP	60	@@Eg	@@ Bf	C1+L1	Eph+Clock
Fastrax iTrax 02, 03	60	1 & 5	4 & 15	C1+S1+L1+D1	Eph+Clock+Iono
GeoTracer L1 receivers	60	obs. record	eph. record	C1+S1+L1+D1	Eph+Clock
Zeiss GePos RS 12	60	201	205, 16, 17	C1+S1+L1+D1	Eph+Clock+Iono
Trimble TSIP receivers	60	111	88	C1+S1+L1+D1	Eph+Clock+Iono
Trimble TIPY receivers		please ask	please ask
Magnavox MX series		please ask	please ask
NovAtel L1 receivers	60	$RGEA	$REPA,$ALMA	C1+S1+L1+D1	Eph+Clock+Iono
Your receiver		please ask	please ask	?	?

C1 = pseudorange, L1 = integrated carrier phase, D1 = Doppler, S1 = carrier to noise ratio.

Receiver data logging

Helenav recommends the Windows freeware logger REALTERM (http://realterm.sourceforge.net/).
On request we supply a simple DOS logger with your order.

Operating system

All packages operate under DOS 5.0 or higher, and in a DOS box in Windows.

Prices

All prices include 19% VAT. A one page user manual and sample i/o data is bundled with the converter.

You will receive 15% discount when you order two or more converters.

Please send your order by e-mail to us.

Payment by

• PayPal
  
• Or bank transfer.

Links to other converters:

• GRINGO (GPS RINEX Generator): A program which records the raw receiver measurements (pseudoranges and, optionally, carrier phase measurements) from 12-channel Garmin GPS receivers in RINEX
• gar2rnx (GARmin to RiNeX): A freeware RINEX file generation from Garmin units

Interested in building your own GPS antenna? Visit our links page