Skip to main content
Message Font: Serif | Sans-Serif
 
No. of Recommendations: 0
""You bring up a good point though about altitude: If SIRI and XMSR use geosynchronous orbits and SIRI's orbit is elliptical, its apogee must be higher than XMSR's sats. This can be seen in the previous link: SIRI's apogee is about 47,000 km, vs XMSR's 36,000 km. I'm sure this extra distance doesn't help SIRI, but I really don't know enough to say by how much.
Electromagnetic signals lose power in proportion to 1/(distance squared). So you can see the received signal has very low power for both in general. ""


Wow, you people are smart. I understood about five words of those paragraphs (and those were the conjunctions and verbs). Whether an ounce of this is true... I have no idea (way beyond my scope), but it sounds really impressive nonetheless!

Yours in geophysics (right),
doddfj
Print the post  

Announcements

What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Contact Us
Contact Customer Service and other Fool departments here.
Work for Fools?
Winner of the Washingtonian great places to work, and Glassdoor #1 Company to Work For 2015! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.