[LEAPSECS] Problems with GPS?

2010-02-10 Thread Rob Seaman
Hi, Any comments on this email exchange between our Deputy Director and an observatory engineer? (I would presume the issue is not directly pertinent to leap seconds.) Systems at the observatory also rely on NTP, of course, but certainly GPS is widely deployed throughout our

Re: [LEAPSECS] Problems with GPS?

2010-02-10 Thread Steve Allen
On Wed 2010-02-10T16:25:28 -0500, Matsakis, Demetrios hath writ: If anyone is aware of ambiguous wording in the ICD, as claimed below, they should notify those groups also listed at the very bottom of this email. ICD-GPS-200C paragraph 20.3.3.5.1.13 does not specify whether the 16-bit integer

Re: [LEAPSECS] Problems with GPS?

2010-02-10 Thread Steve Allen
On Wed 2010-02-10T15:58:27 -0700, M. Warner Losh hath writ: What would a negative year mean anyway? http://en.wikipedia.org/wiki/ISO_8601#Years with the proviso that this is By mutual agreement of the partners in information interchange ... -- Steve Allen s...@ucolick.org

Re: [LEAPSECS] Problems with GPS?

2010-02-10 Thread M. Warner Losh
In message: 20100210220958.gk17...@ucolick.org Steve Allen s...@ucolick.org writes: : On Wed 2010-02-10T16:25:28 -0500, Matsakis, Demetrios hath writ: : If anyone is aware of ambiguous wording in the ICD, as : claimed below, they should notify those groups also listed at the very :

Re: [LEAPSECS] Problems with GPS?

2010-02-10 Thread Magnus Danielson
Matsakis, Demetrios wrote: I have no privileged information and GPS receiver programming is not what I do, but I also have never known the ICD200 to be incorrect. Perhaps ten years ago, two timing experts separately informed me of great frustration they had writing their own GPS receiver