Active GPS antenna with M4

Info and discussion about the autonomous Micro FC, suitable for nanos, micros and mini multirotors

Active GPS antenna with M4

Postby axi » Mon Apr 06, 2015 12:23 am

Hello,
I have read that M4 v2 comes with MAX-M8Q module. I was thinking of using this active antenna http://www.tallysman.com/TW4821.php wich requires 3v. But I have doubts if Q module supports active antenna feed.

From ublox webpage:

Product variants
- MAX-M8C u-blox M8 concurrent GNSS LCC module,
crystal, ROM
- MAX-M8Q u-blox M8 concurrent GNSS LCC module,
TCXO, ROM
- MAX-M8W u-blox M8 concurrent GNSS LCC module,
TCXO, active antenna supply, ROM


So it seems only MAX-M8W have active antenna supply.

Anyone can enlight me about this?

Thanks in advance,


Post edit:

Right now the multi constellation accuracy it's better than only GPS signal? are GLONASS, Beidou and Galileo supported on Autoquad firmware?
axi
 
Posts: 28
Joined: Mon Apr 06, 2015 12:19 am

Re: Active GPS antenna with M4

Postby bn999 » Mon Apr 06, 2015 12:47 am

Yes, the M4v2 will supply 3.3v to an active antenna. The AQ firmware will make use of all GNNS available.

I would not say that absolute accuracy increases while using multiple GNNS, but I have notices improved velocity estimates which for AQ is just as important as position accuracy. The biggest improvement actually comes from advancements in the UBlox M8 engine itself.
bn999
 
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Re: Active GPS antenna with M4

Postby axi » Mon Apr 06, 2015 1:00 am

Thank you very much for the info!
axi
 
Posts: 28
Joined: Mon Apr 06, 2015 12:19 am


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