Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Tom Van Baak
>> 2 (or more) Loran-C stations gave you more accurate time. But if you >> know where you are, and since the stations don't move, you can >> manually adjust for signal propagation delay to some extent. This is >> not unlike how one obtains time from WWV or WWVB. > > One of the big issues with

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Warner Losh
On Thu, Feb 13, 2020, 12:36 PM Tom Van Baak wrote: > > I thought of Loran... but you need 2 stations for time, I thought... > > 2 (or more) Loran-C stations gave you more accurate time. But if you know > where you are, and since the stations don't move, you can manually adjust > for signal

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Tom Van Baak
> Within 180 days of the date of this order, the Secretary of Commerce shall > make available a GNSS-independent source of Coordinated Universal Time, > to support the needs of critical infrastructure owners and operators, > for the public and private sectors to access. And I hope by "source of

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Tom Van Baak
> I thought of Loran...  but you need 2 stations for time, I thought... 2 (or more) Loran-C stations gave you more accurate time. But if you know where you are, and since the stations don't move, you can manually adjust for signal propagation delay to some extent. This is not unlike how one

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Warner Losh
On Thu, Feb 13, 2020, 11:13 AM Steve Allen wrote: > On Thu 2020-02-13T14:37:32+ Richard Langley hath writ: > > https://www.gpsworld.com/gps-backup-demonstration-projects-explained/ > > Crossing over a thread from time-nuts, the Wildwood eLoran should turn > on its transmitter some time this

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Steve Allen
On Thu 2020-02-13T14:37:32+ Richard Langley hath writ: > https://www.gpsworld.com/gps-backup-demonstration-projects-explained/ Crossing over a thread from time-nuts, the Wildwood eLoran should turn on its transmitter some time this week. -- Steve Allen WGS-84

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread jimlux
On 2/13/20 6:47 AM, Seaman, Robert Lewis - (rseaman) wrote: Conceivably Ruth Belville might satisfy the language: https://en.wikipedia.org/wiki/Ruth_Belville#/media/File:Ruth_Belville_1908.jpg Assuming Ms. Belville (or her successors) set their watches appropriately, yes. And it would be a

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Jonathan Hardis via LEAPSECS
> On Feb 13, 2020, at 9:14 AM, Seaman, Robert Lewis - (rseaman) > wrote: > > Hi Richard, > > Interesting! A few immediate comments / questions: > > 1) Political talk to /dev/null > 2) Whether as executive order or otherwise, language like this obviously > originated with experts. > 3) Does

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Seaman, Robert Lewis - (rseaman)
Conceivably Ruth Belville might satisfy the language: https://en.wikipedia.org/wiki/Ruth_Belville#/media/File:Ruth_Belville_1908.jpg -- On 2/13/20, 7:37 AM, "LEAPSECS on behalf of Richard Langley" wrote: Yes, I don't think Mr. Trump came up with the language or even read it. ;-) Not

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Richard Langley
Yes, I don't think Mr. Trump came up with the language or even read it. ;-) Not sure where Canada stands on the subject at the moment (I'll enquire), but the U.S. effort might be driven by DoT through its Positioning, Navigation, and Timing (PNT) & Spectrum Management division under the

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread jimlux
On 2/13/20 5:46 AM, Richard Langley wrote: "(i) Within 180 days of the date of this order, the Secretary of Commerce shall make available a GNSS-independent source of Coordinated Universal Time, to support the needs of critical infrastructure owners and operators, for the public and private

Re: [LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Seaman, Robert Lewis - (rseaman)
Hi Richard, Interesting! A few immediate comments / questions: 1) Political talk to /dev/null 2) Whether as executive order or otherwise, language like this obviously originated with experts. 3) Does anybody know what agenc(ies) appears to be motivating this? 4) Are commercial interests

[LEAPSECS] Executive Order on Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services

2020-02-13 Thread Richard Langley
"(i) Within 180 days of the date of this order, the Secretary of Commerce shall make available a GNSS-independent source of Coordinated Universal Time, to support the needs of critical infrastructure owners and operators, for the public and private sectors to access."