[time-nuts] New GNSS chipsets

Tom Knox actast at hotmail.com
Sun Apr 1 17:53:45 EDT 2018


Hi All;

I think the real break through is using these different constellations and their different frequencies and looking at carrier phase verses timing elements. This should allow the removal of propagation delay.

Cheers;

Thomas Knox
actast at hotmail.com


________________________________
From: time-nuts <time-nuts-bounces at febo.com> on behalf of Magnus Danielson <magnus at rubidium.dyndns.org>
Sent: Sunday, April 1, 2018 2:40 PM
To: time-nuts at febo.com
Cc: magnus at rubidium.se
Subject: 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 04/01/2018 07:04 PM, Joseph Gray wrote:
> 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
>
>
> On Sun, Apr 1, 2018 at 3:15 AM, Magnus Danielson <magnus at rubidium.dyndns.org
>> wrote:
>
>> 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. Broadcom is claiming 30 cm, uBlox just says
>> "centimeter
>>> level". The next few years ought to be very interesting, as these
>> chipsets
>>> become available in consumer products.
>>
>> 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.
>>
>> The benefit is naturally redundancy, but also higher precision.
>>
>> Natural I would enjoy cheap multi-frequency receivers myself, but I
>> would never admit that this would be a reason for advocating it. ;-)
>>
>> Cheers,
>> Magnus
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