Gps Buyer Guide » Astronomy & Space http://www.gpsbuyerguide.com/blog Tue, 21 Dec 2010 13:14:40 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 How many GPS satellites are in the sky at any one time? http://www.gpsbuyerguide.com/blog/how-many-gps-satellites-are-in-the-sky-at-any-one-time/ http://www.gpsbuyerguide.com/blog/how-many-gps-satellites-are-in-the-sky-at-any-one-time/#comments Sat, 08 May 2010 09:10:12 +0000 admin http://www.gpsbuyerguide.com/blog/how-many-gps-satellites-are-in-the-sky-at-any-one-time/ gps
Uncle Pennybags asked:


By this I mean from horizon to horizon. If you had a GPS unit and you were in the middle of a flat plain, how many satellites could it possibly pick up?

]]> http://www.gpsbuyerguide.com/blog/how-many-gps-satellites-are-in-the-sky-at-any-one-time/feed/ 2 What is the approximate altitude of a GPS satellite? http://www.gpsbuyerguide.com/blog/what-is-the-approximate-altitude-of-a-gps-satellite/ http://www.gpsbuyerguide.com/blog/what-is-the-approximate-altitude-of-a-gps-satellite/#comments Mon, 01 Mar 2010 05:56:37 +0000 admin http://www.gpsbuyerguide.com/blog/what-is-the-approximate-altitude-of-a-gps-satellite/ gps
=D asked:


Also how many planes do GPS Satellites form?
What is a plane?

]]> http://www.gpsbuyerguide.com/blog/what-is-the-approximate-altitude-of-a-gps-satellite/feed/ 3 How many watts does a GPS satellite transmit? http://www.gpsbuyerguide.com/blog/how-many-watts-does-a-gps-satellite-transmit/ http://www.gpsbuyerguide.com/blog/how-many-watts-does-a-gps-satellite-transmit/#comments Tue, 15 Dec 2009 13:00:58 +0000 admin http://www.gpsbuyerguide.com/blog/how-many-watts-does-a-gps-satellite-transmit/ gps
RicArmstrong asked:


I was wondering how many watts does it take for a GPS satellite in space use to transmit a signal to my GPS receiver here on earth?

]]> http://www.gpsbuyerguide.com/blog/how-many-watts-does-a-gps-satellite-transmit/feed/ 2 how come satelites scale for so many GPS units out there? http://www.gpsbuyerguide.com/blog/how-come-satelites-scale-for-so-many-gps-units-out-there/ http://www.gpsbuyerguide.com/blog/how-come-satelites-scale-for-so-many-gps-units-out-there/#comments Mon, 11 May 2009 04:07:38 +0000 admin http://www.gpsbuyerguide.com/blog/how-come-satelites-scale-for-so-many-gps-units-out-there/ gps
Vladimir Ghetau asked:


Hi ,

I am really wondering about this, and couldn’t find any answer, or maybe I wasn’t searching for the right thing.

With all these GPS units being sold nowadays, how come the satellites keep handling all these units questioning “what’s my position now”, how come they scale so well? I need a point to start understanding this.

Cheers!

]]> http://www.gpsbuyerguide.com/blog/how-come-satelites-scale-for-so-many-gps-units-out-there/feed/ 6 What are some challenges we face with the GPS technology? http://www.gpsbuyerguide.com/blog/what-are-some-challenges-we-face-with-the-gps-technology/ http://www.gpsbuyerguide.com/blog/what-are-some-challenges-we-face-with-the-gps-technology/#comments Sat, 09 May 2009 19:05:49 +0000 admin http://www.gpsbuyerguide.com/blog/what-are-some-challenges-we-face-with-the-gps-technology/ gps
Debbie asked:


I know that some people are scared of being tracked or something…and another issue is laziness i think?

Do you know any other challenges we face with advanced GPS technology? And how they could be overcome?

]]> http://www.gpsbuyerguide.com/blog/what-are-some-challenges-we-face-with-the-gps-technology/feed/ 2 How many different GPS satellite networks are there? http://www.gpsbuyerguide.com/blog/how-many-different-gps-satellite-networks-are-there/ http://www.gpsbuyerguide.com/blog/how-many-different-gps-satellite-networks-are-there/#comments Thu, 02 Apr 2009 20:14:38 +0000 admin http://www.gpsbuyerguide.com/blog/how-many-different-gps-satellite-networks-are-there/ gps
jacobica42 asked:


The United States has its network, and I think Russia has one too, but I’m not sure. Is that correct? Are there any private ones? How many are there altogether?

]]> http://www.gpsbuyerguide.com/blog/how-many-different-gps-satellite-networks-are-there/feed/ 1 How many satellites do you need to start a GPS system from scratch? http://www.gpsbuyerguide.com/blog/how-many-satellites-do-you-need-to-start-a-gps-system-from-scratch/ http://www.gpsbuyerguide.com/blog/how-many-satellites-do-you-need-to-start-a-gps-system-from-scratch/#comments Thu, 19 Mar 2009 16:11:13 +0000 admin http://www.gpsbuyerguide.com/blog/how-many-satellites-do-you-need-to-start-a-gps-system-from-scratch/ gps
megalomaniac asked:


I think you need more than three. Its not just simple triangulation. You need AT LEAST three that are within ’sight’ of your device, but some of them are going to be on the other side of the globe, or am I missing something?

]]> http://www.gpsbuyerguide.com/blog/how-many-satellites-do-you-need-to-start-a-gps-system-from-scratch/feed/ 2 Whats the difference between the GPS system and the Star-Fire Network system? http://www.gpsbuyerguide.com/blog/whats-the-difference-between-the-gps-system-and-the-star-fire-network-system/ http://www.gpsbuyerguide.com/blog/whats-the-difference-between-the-gps-system-and-the-star-fire-network-system/#comments Thu, 12 Mar 2009 14:22:52 +0000 admin http://www.gpsbuyerguide.com/blog/whats-the-difference-between-the-gps-system-and-the-star-fire-network-system/ gps
James W asked:


Apart from accuracy that is!

Do they both use the same Satellites?

Thanks
Is Star-Fire network a DGPS system?

]]> http://www.gpsbuyerguide.com/blog/whats-the-difference-between-the-gps-system-and-the-star-fire-network-system/feed/ 1 How can we perform Differential GPS technique in simple way? http://www.gpsbuyerguide.com/blog/how-can-we-perform-differential-gps-technique-in-simple-way/ http://www.gpsbuyerguide.com/blog/how-can-we-perform-differential-gps-technique-in-simple-way/#comments Tue, 10 Feb 2009 23:01:04 +0000 admin http://www.gpsbuyerguide.com/blog/how-can-we-perform-differential-gps-technique-in-simple-way/ gps
CAMS asked:


Differential GPS is useful to reduce errors when taking coordinates readings of a point on earth. in fact, and due to many reasons when we take latitude and logitude of a point using our standard GPS receiver , the readings will be shown somewhere els !

There is so many ways to reduce errors
one is and less coastly , using two receivers and set one as a base station … the question is HOW ??

Appreciate everyone who tried and simplified it here for me

Thanks in advance

]]> http://www.gpsbuyerguide.com/blog/how-can-we-perform-differential-gps-technique-in-simple-way/feed/ 0 How do GPS satellites stay in perfect position with out drifting out of position in time? http://www.gpsbuyerguide.com/blog/how-do-gps-satellites-stay-in-perfect-position-with-out-drifting-out-of-position-in-time/ http://www.gpsbuyerguide.com/blog/how-do-gps-satellites-stay-in-perfect-position-with-out-drifting-out-of-position-in-time/#comments Tue, 03 Feb 2009 04:54:30 +0000 admin http://www.gpsbuyerguide.com/blog/how-do-gps-satellites-stay-in-perfect-position-with-out-drifting-out-of-position-in-time/ gps
Peter D asked:


Seems that no matter how perfectly positioned these GPS satellites are they would drift out of position and that would throw off the computations of our GPS units in cars etc.

]]> http://www.gpsbuyerguide.com/blog/how-do-gps-satellites-stay-in-perfect-position-with-out-drifting-out-of-position-in-time/feed/ 9