The atmosphere protects the earth from a lot of stuff the universe throws at us
Solar flares , space junk , micrometeors just the usual hazards the space at large has. Inability to service satellites when transmitters or RCS fuel exhausted Sent from my iPhone On Jul 30, 2013, at 9:31 AM, "Lester Veenstra" <[email protected]> wrote: > Exactly what do you mean by "... based in LEO has a relatively high risk > profile from the Universe/hostile activity/spoofing and jamming..."? > > Other than a LOS, in a jammers immediate area, GPS is not subject to > jamming, and for the critical users, ie, the DOD, very difficult to jam, > even in a LOS. > > The LEO makes it harder to jam since the received signal strength is higher > than would be practical from GeoSync orbit, not easier, as is implied my > Mr. McGraths comment. > > Lester B Veenstra MØYCM K1YCM W8YCM > [email protected] > > US Postal Address: > 5 Shrine Club Drive > HC84 Box 89C > Keyser WV 26726 > GPS: 39.33675 N 78.9823527 W (Google) > GPS: 39.33682 N 78.9023741 W (GPSDO) > > > Telephones: > Home: +1-304-289-6057 > US cell +1-304-790-9192 > UK cell +44-(0)7849-248-749 > Guam Cell: +1-671-929-8141 > Jamaica: +1-876-456-8898 > > This e-mail and any documents attached hereto contain confidential or > privileged information. The information is intended to be for use only by > the individual or entity to whom they are addressed. If you are not the > intended recipient or the person responsible for delivering the e-mail to > the intended recipient, be aware that any disclosure, copying, distribution > or use of the contents of this e-mail or any documents attached hereto is > prohibited. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
