I couldn't resist, Here is a Ministry of Defence picture of the GPS receiver (eTrex Legend) a British soldier was holding on a helicopter over the merchant ship their comrades were captured on: # The article that references this picture states that is was taken on Sunday morning, March 25th - two days after the incident - but they don't say when. Looking at the picture only, can you tell what time the picture was taken? Hints: Garmin lists their satellites in numerical order across the bottom of this screen - though some are hard to make out, they can be inferred. The local time there is UTC +3 (or +3:30 if you think their they're in Iranian waters) I think I got it to within 15-20 minutes... T. Driver
I also got between 5:51 and 6:14 GMT. The satellite's (s)he's tracking are: 5,6,7,18,21 and 30. (S)He's also tracking 22, but hasn't acquired all the data to use it in a nav solution yet. Looking at the EXIF information is something I didn't think about Sam, bravo! Unfortunately it's not from the day of the photograph. Great job guys! Ted
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Solution #5
posted on Aug 01, 2007
jessie25 - usenet poster
Rank: Apprentice Rating: 0%, 0 votes
Cool. Since the satellite view is "North Up", it's clear the helicopter is traveling ESE, and from the satellite distribution, the crewman is probably on the starboard side, facing south.
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Solution #6
posted on Aug 01, 2007
LiZzIe - usenet poster
Rank: Apprentice Rating: 0%, 0 votes
...
Using just satellites 21,22, and 30 I got about 0600 GMT using Trimble's planning SW. I felt fairly confident that I could read those satellite numbers from the image.
For those interested the Trimble SW is free and available here: #
Don't forget to also DL the ephemeris file! Then start the SW, go to the menu Almanac/Load, and load it.
Thanks to Trimble for making this nice SW freely available.
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