Re: Introduction of long term scheduling

2007-01-15 Thread Tony Finch
On Mon, 15 Jan 2007, Peter Bunclark wrote: http://www.eecis.udel.edu/~mills/ipin.html That page does not seem to mention UTC... Look at the slides. Tony. -- f.a.n.finch [EMAIL PROTECTED] http://dotat.at/ BISCAY FITZROY: VARIABLE 4, BECOMING SOUTHWESTERLY 5 TO 7 IN NORTHWEST FITZROY.

NTP on Mars

2007-01-15 Thread Peter Bunclark
On Mon, 15 Jan 2007, Tony Finch wrote: On Mon, 15 Jan 2007, Peter Bunclark wrote: http://www.eecis.udel.edu/~mills/ipin.html That page does not seem to mention UTC... Look at the slides. Whoops. In my defense, there has been traffic elsewhere pointing out that authoring in powerpoint

The Martian Chronicles

2007-01-15 Thread Rob Seaman
On Fri 2007-01-12T18:35:55 +, Tony Finch hath writ: According to the slides linked from Dave Mills's Timekeeping in the Interplanetary Internet page, they are planning to sync Mars time to UTC. http://www.eecis.udel.edu/~mills/ipin.html There seems to be an unwarranted assumption that a

Re: The Martian Chronicles

2007-01-15 Thread Rob Seaman
I said: I also wonder whether it might be productive to consider closing the NTP servo loop in velocity (frequency) in this case, rather than position (phase). Before somebody else calls me on it, I should point out that NTP actually uses both: The clock discipline algorithm functions

Re: The Martian Chronicles

2007-01-15 Thread Zefram
Rob Seaman wrote: I suspect we're all bemused to contemplate issue terrestrial leap seconds on Martian bases. It seems about as silly as Antarctic bases observing daylight saving time. Which several do. The Amundsen-Scott base at the south pole maintains New Zealand

Re: The Martian Chronicles

2007-01-15 Thread Steve Allen
On Mon 2007-01-15T08:53:19 -0700, Rob Seaman hath writ: Any comments on the practicality of space-rating such timepieces? GPS uses rubidium cells, and Galileo will. I've seen ruminations about flying a cesium resonator and an ion trap on ISS with a goal of redefining the SI second by allowing a

Re: The Martian Chronicles

2007-01-15 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Rob Seaman writes: Before somebody else calls me on it, I should point out that NTP actually uses both: The clock discipline algorithm functions as a nonlinear, hybrid phase/frequency-lock (NHPFL) feedback loop. (see