[time-nuts] Airraft Ping Timing

[J. Forster]

Could well be. I never saw the bird, of course. The portable ground
station was roughly the same size as an OD Manpak radio of the period and
read out Lat/Long on LED digital readouts. In retrospect, it may have been
in the early 1980s.

-John

==============


> Hi,
>
>> Yes, and there was an early military positioning system, roughly 1960s /
>> 1970s that worked on Dopplar also. The name escapes me at the moment.
>
> I think it is Transit.
> See http://en.wikipedia.org/wiki/Transit_(satellite)
>
> Greetings,
> Pieter.
>
>>
>> -John
>>
>> =============
>>
>>
>>
>>> This is how ELT locating satellites work (when not relaying the newer
>>> GPS
>>> data bursts).  Several on another list I watch suggested this pretty
>>> early
>>> on and I guess INMARSAT got the message.  I'd be curious to know if
>>> AFRCC
>>> pointed INMARSAT in that direction.
>>>
>>> Really shows the value of precise and stable time references!
>>>
>>>
>>>
>>>
>>> Date: Mon, 24 Mar 2014 16:06:14 -0700 (PDT)
>>> From: "J. Forster"<jfor at quikus.com>
>>> To:time-nuts at febo.com
>>> Subject: [time-nuts] Airraft Ping Timing
>>> Message-ID:
>>> 	<13855.12.226.214.5.1395702374.squirrel at popaccts.quikus.com>
>>> Content-Type: text/plain;charset=iso-8859-1
>>>
>>> According to a report on FOX, INMARSAT was able to determine the
>>> Malasia
>>> Air followed the southern traectory from the Dopplar of the pings. They
>>> verified their model by tracking other planes.
>>>
>>> -John
>>>
>>> =============
>>>
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>>
>>
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