Bye, bye GPS – Welcome Glonass

This week I was visiting customers to present the latest GNSS modules. These hybrid GNSS modules are able to receive GPS and Glonass satellites in parallel. We received 17 channels. Just have a look at the video (37 sec).

  • Dark blue bars = GPS satellites with fix
  • Light blue bars = Glonass satellites with fix
  • 1 orange bar = GPS satellites without fix
  • 1 red bar = Glonass satellites without fix

In Paris we were able to receive 21 channels in parallel. Anyhow, worst case you “see” 3 GPS and 1 Glonass, 2 GPS and 2 Glonass, 1 GPS and 3 Glonass or 0 GPS and 4 Glonass satellites at the sky. Without Glonass you will not be able to locate anything. A good example was the beginning of a war. Rumours tell that we got 5 hours no GPS fix in Europe.

The selection of the right GPS module with the right A-GPS concept and the right power save mode is a decision that will change the power consumption and the standby time of your device dramatic. Is it a single GNSS module that supports GPS only enough or is it better to use a hybrid GPS/Glonass module? Makes it sense to use A-GPS? Is the use of 1-axis gyro, 3-axis gyro, accelerometer, pressure sensor, magnetometer and Odometer interface useful or not? Makes it sense to develop a prototype with 1-axis gyro, 3-axis gyro, accelerometer, pressure sensor, magnetometer and odometer interface and after the test to decide which sensors will help to get the best indoor positioning? Will one of the five different power save modes be helpful, and which out of five is to select? Is an A-GPS by A-GPS-server, self assisted A-GPS or A-GPS on demand the better solution? What type of antenna is to select: directional GPS patch antennas with right hand polarisation, non polarised GPS chip antennas, single ended GPS helical antennas or better a ground plan independent helical with balun to minimise the effect of human body? Shall we trust one GNSS system like GPS or is it saver to use a hybrid GPS/Glonass modules?


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  1. Hi Harald,

    prima Video-Clip. Hast du schon zahlreiche Rückmeldungen?
    Der Herr Stockinger von ST hat Dich entdeckt. Er fragte mich nach Dir. Der kümmert sich um die Vermarktung von Automotive-Produkten, offenbar auch der Teseo-Chips. Diese sind nun im iT600 verbaut.
    Grüße aus’m Headquarter vom

  2. Hi Frank,

    Nice to meet you in my blog. The feedback on the new GNSS module is great. I forwarded all sales leads to our wireless competence centre in Germany. Glonass India is asking for an evaluation kit. 3 customers out of 5 placed an order during the visit. Have seen the latest here:

    BTW, there was a call for papers for the best Galileo application. I got the last call for papers on Thursday morning. Thursday evening was four hours left. Believe me or not, but I made an presentation that contains the hybrid GNSS module plus two more wireless technologies that was not public four weeks before.

    See you in Dresden soon.

  3. Hi Harald
    i cant see the videos link
    where is it?

  4. Hi Sara, it is working fine on my Firefox. Here is a direct link to Youtube

  5. Hi
    tnx Harald
    in your opinion which is better? GPS & Galileo module or GPS & Glonass?
    galileo`s Accuracy is more than glonass?
    how many meter?

  6. Sara, just read here:

    A GPS only is crossing the skyscrapers. The dual mode GPS/Glonass not.

  7. Harald i now that GPS/Glonass is better than GPS
    but i want to know which one is better GPS/Glonass or GPS/Galileo?

  8. GALILEO will offer five services

    This will be ‘free to air’ and for use by the mass market; Simple timing and positioning down to 1m

    Encrypted; High accuracy at the cm scale; Guaranteed service for which service providers will charge fees

    Open service; For applications where guaranteed accuracy is essential; Integrity messages will warn of errors

    Encrypted; Continuous availability even in time of crisis; Government agencies will be main users

    System will pick up distress beacon locations; Feasible to send feedback, confirming help is on its way


    Galileo is much better than GPS or Glonass.

  9. that’s great
    Harald Galileo system will be complete and How many satellites have been launched so far and What areas are covered now?

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