[time-nuts] New GNSS chipsets

I was measuring the jitter and adevs of the PPS signal from a GT-8736. GPS only seems to be slightly better (1-3 ns more span) than GPS+GLONASS. GLONASS only seems have around 50% more jitter than GPS only. Glonaas only adevs are 3 times as large as GPS only (at tau=1 seconds).

Re: [time-nuts] New GNSS chipsets

Hi > On Apr 1, 2018, at 9:47 PM, Hal Murray wrote: > > > mag...@rubidium.dyndns.org said: >> I have advocated for receivers able to handle multiple frequencies and >> multiple GNSS for some time, sneaking it into documents, so there should be >> some preparations for

Re: [time-nuts] New GNSS chipsets

Hi A….. but ….. The uBlox parts are available with the existing chip sets pretty easily today. That has not always been the case with uBlox. Back when the chips were new / unique / hard to support it was significantly more difficult to get anything out of them (at least at a rational

Re: [time-nuts] New GNSS chipsets

Hi Hal, On 04/02/2018 03:47 AM, Hal Murray wrote: > > mag...@rubidium.dyndns.org said: >> I have advocated for receivers able to handle multiple frequencies and >> multiple GNSS for some time, sneaking it into documents, so there should be >> some preparations for this now. > > How well do

Re: [time-nuts] New GNSS chipsets

I think Bob is right and knows what he is talking about.  Example Furuno GT-87, how many years have I known about it and tried to buy some, just recently became available. Bert Kehren   In a message dated 4/1/2018 10:52:50 PM Eastern Standard Time, jg...@zianet.com writes:   Bob, If it was a

Re: [time-nuts] New GNSS chipsets

time-nuts-boun...@febo.com> on behalf of Magnus Danielson > <mag...@rubidium.dyndns.org> > Sent: Sunday, April 1, 2018 2:40 PM > To: time-nuts@febo.com > Cc: mag...@rubidium.se > Subject: Re: [time-nuts] New GNSS chipsets > > Joe, > > I'm not sur

Re: [time-nuts] New GNSS chipsets

mag...@rubidium.dyndns.org said: > I have advocated for receivers able to handle multiple frequencies and > multiple GNSS for some time, sneaking it into documents, so there should be > some preparations for this now. How well do various GNSS track UTC and/or eachother? > The benefit is

Re: [time-nuts] New GNSS chipsets

time-nuts <time-nuts-boun...@febo.com> on behalf of Magnus > Danielson <mag...@rubidium.dyndns.org> > Sent: Sunday, April 1, 2018 2:40 PM > To: time-nuts@febo.com > Cc: mag...@rubidium.se > Subject: Re: [time-nuts] New GNSS chipsets > > Joe, > > I'm not sure I

Re: [time-nuts] New GNSS chipsets

Bob, If it was a glass of good bourbon, I'd take you up on that offer :-) The Broadcom chipsets are touted as being specifically for phones. Whether we'll be able to buy stand alone modules, I don't know. The uBlox chipsets have in that past been widely available at rational prices. Hopefully

Re: [time-nuts] New GNSS chipsets

Hi I’d bet a warm glass of beer ( pick up only, no free delivery ) that you will not see them in user level modules ( = something you can fire up) at a rational price ( < $500) for quite a while ( = years …). The target market is integration in self driving / autonomous vehicles. If you

Re: [time-nuts] New GNSS chipsets

From: time-nuts <time-nuts-boun...@febo.com> on behalf of Magnus Danielson <mag...@rubidium.dyndns.org> Sent: Sunday, April 1, 2018 2:40 PM To: time-nuts@febo.com Cc: mag...@rubidium.se Subject: Re: [time-nuts] New GNSS chipsets Joe, I'm not sure I had much influence, but I at least try

Re: [time-nuts] New GNSS chipsets

Joe, I'm not sure I had much influence, but I at least try to advocate for it to become a good market, so hopefully it will be affordable. It has actually been affordable for quite some time, so going multifrequency should be the next step and with that the benefits. Cheers, Magnus On

Re: [time-nuts] New GNSS chipsets

Magnus, When I can buy one of these new, multi-frequency receivers, I'll remember to thank you :-) I wonder if any of the three will be available this year. The Broadcom chipset in phones will be nice, but I'd also like a standalone module from anyone. More fun stuff to play with. Joe Gray W5JG

Re: [time-nuts] New GNSS chipsets

Hi Joe, On 03/31/2018 01:16 PM, Joseph Gray wrote: > I've been reading announcements by Broadcom, uBlox and ST Micro for new > chipsets that will use L1, L2, L5 to provide significantly more precise > positioning for every day applications like cell phone, autonomous > vehicles, UAV, etc.

[time-nuts] New GNSS chipsets

I've been reading announcements by Broadcom, uBlox and ST Micro for new chipsets that will use L1, L2, L5 to provide significantly more precise positioning for every day applications like cell phone, autonomous vehicles, UAV, etc. Broadcom is claiming 30 cm, uBlox just says "centimeter level". The