You talked me in to it.
Wes N7WS
On 5/23/2020 8:19 AM, Jeremy Nichols wrote:
Sufficiently interesting that I bought a paper copy through Abebooks. Looks
like a somewhat later version, author given as Douglas Mudgway, title
“ Uplink-Downlink:
A History of the Deep Space Network 1957-1997.” “Oversized,” 674
pages. Abebooks
lists a couple dozen copies in both hardback and paperback at prices from
reasonable to ridiculous, as is usual for bookstores.
Jeremy
On Sat, May 23, 2020 at 3:47 AM ew via time-nuts <[email protected]>
wrote:
This is a must read. Could not put it down, JPL, NASA, Eisenhowe,r did
learn a lot at the same time fascinating
Bert Kehren
In a message dated 5/22/2020 10:36:53 PM Eastern Standard Time,
[email protected] writes:
Apparently, they used moonbounce between DSN stations to synchronize to 5
microseconds in 1968. It was easier and cheaper than flying cesium clocks
around. (And the Rb standards weren't good enough).
https://ntrs.nasa.gov/search.jsp?R=19770007245
History of DSN - mostly about politics, history, transmitters and
receivers, but a whole section on timekeeping, phase measurements, etc.
starting around page 133 (The DSN Inherent accuracy project), and the
discovery during Mariner that UTC and UTI were different enough to cause
nav errors.
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