GPS satellites???

I described Trilateration, YOU described multilateration you moron

The receiver contains an antenna, a quartz clock, and a computer. When it receives a signal, it calculates the transit time of the signal based on the time stamp contained within the signal, and using the known speed of light, determines the receiver's distance from the transmitter. The receiver can be anywhere on the surface of a sphere whose radius is is the calculated distance from the transmitter.

Apparently you don't actually know what multilateration is.  Tell me in your own words what it is.  No links, just a simple explanation.

Multilateration should not be confused with trilateration, which uses absolute measurements of time-of-arrival from three or more sites.

Developed by the United States Department of Defense, it is officially named NAVSTAR GPS (Navigation Satellite Timing And Ranging Global Positioning System). The satellite constellation is managed by the United States Air Force 50th Space Wing. Although the cost of maintaining the system is approximately US$400 million per year, including the replacement of aging satellites, GPS is free for civilian use as a public good.

Multilateration - the calculation of a position based on the time difference of accurate clocks from recievers at fixed position. A short signal is sent from the transmitter to 4 points on the earths surface. Now using the Difference in the Arrival time, the recievers, using atomic clocks accurately calculate the transmitters position.

Quote from: "Quarrior"

Multilateration - the calculation of a position based on the time difference of accurate clocks from recievers at fixed position. A short signal is sent from the transmitter to 4 points on the earths surface. Now using the Difference in the Arrival time, the recievers, using atomic clocks accurately calculate the transmitters position.

Nope.  In multilateration, the unit whose position is to be determined, transmits a signal to multiple receivers that use time difference of arrival between the receiving sites to determine a set of possible locations that lie in a hyperboloid, hence  the term hyperbolic positioning.  This does not require an absolute time, as the only thing that matters is the difference of arrival times between the receivers.  Now, if you add in a third receiver, you now get another hyperboloid, defining a curve in space.  Toss in a fourth receiver, and you now have your location in space, without reference to an absolute time.

In case you don't know, a hyperboloid is kind of like two cones connected at the points.

What I explained was nothing like multilateration:  The unit whose position is to be determined, receives absolute time and position signals from a transmitter.  Using the time delay in reception, it calculates its distance from the transmitter.  This defines a sphere in space.  A sphere is not a hyperboloid.

...it could simply calculate its position use multilateration as the recievers for multilateration are fixed.

Trilateration still works when the transmitters are stationary.  It is simpler for a GPS unit to have a fairly accurate quartz clock that is calibrated on startup rather than having a transmitter.

It would be much cheaper to have a simple IR emitting device and recievers on the ground than pointlessly launch $400 million dollars worth of satellites and  then upkeep and replacement costs added on annually.

Quote from: "Quarrior"

It would be much cheaper to have a simple IR emitting device and recievers on the ground than pointlessly launch $400 million dollars worth of satellites and  then upkeep and replacement costs added on annually.

Yes it would, which is why the whole GPS thing is suspicious.

When the transmitters are stationary there is no need to trilateration because, as we said they are fixed.

Quote from: "Quarrior"

When the transmitters are stationary there is no need to trilateration because, as we said they are fixed.

What good is it to know where the transmitters are, if you don't know where you are?

We send out a pulse, then the fixed recievers calculate our position based on theTDOA, then send it back to us.

Quote from: "Quarrior"

We send out a pulse, then the fixed recievers calculate our position based on theTDOA, then send it back to us.

Or, one can have a simple, relativly cheap receiver that calculates position based on uniformly broadcast signals from transmitters with known locations.  Which seems to be the way to go as it's what is used in GPS and the very popular VOR.

Nothing is based on government conspiracy; rather, government conspiracy is an aspect.  Not all that many people need to know it; I know it sounds ridiculous at first, but it really is plausible if you think about it.

Nothing is based on government conspiracy; rather, government conspiracy is an aspect.  Not all that many people need to know it; I know it sounds ridiculous at first, but it really is plausible if you think about it.

Quote from: "Czigot"

Nothing is based on government conspiracy; rather, government conspiracy is an aspect.  Not all that many people need to know it; I know it sounds ridiculous at first, but it really is plausible if you think about it.

All developed countries and even some undeveloped nations have the means to test whether the world was flat. Any Nation with an airforce could do it. Most 1st world countries have satellite programs.

Quote from: "Quarrior"

All developed countries and even some undeveloped nations have the means to test whether the world was flat. Any Nation with an airforce could do it. Most 1st world countries have satellite programs.

Yes they do have the means to test this, but why would they?  They already 'know' the Earth is round.

They can "clearly see differently"?  How's that?

And what is it with all you argumentative types and bad grammar?

Too lazy to correct. From the alttitude which most fighters can reach today, the sphereical nature of the Earth could be clearly defined.

Quote

Too lazy to correct. From the alttitude which most fighters can reach today, the sphereical nature of the Earth could be clearly defined.

Incorrect. No plane could see the earth as a globe.