Posted on 03/23/2014 1:06:32 PM PDT by txgirl4Bush
No, the distance from the sat is a gross approximation.
Time of engine operation is all there is to gather there.
>> “the arcs represent the distance the plane was from the satellite at a certain point in time” <<
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No!
All we are talking about here is a VHF radio transmission.
There is no way that the sat can give us position.
Time is the vector that it gives us.
You’re correct. He seems to think we don’t understand, but he just doesn’t understand the meaning of the arc. The statement you highlighted clearly indicates that.
In fact, I’ve seen the 7:11 arcs and they would indicate that the plane would have been flying away from Pakistan in the hour between 7:11 and 8:11 if it were in that area at all. In other words, the 7:11 ping arc is closer to Pakistan than the 8:11 ping arc.
Personally I think he circled around intending to return to Malaysia with ill intent, but ended up in the ocean somewhere south of Malaysia though I’m skeptical of the debris reports. After all, if it’s down in the ocean, it’s been over two weeks now. But the fact that they’re searching down there makes me suspect that they have additional information indicating that he went south rather than north.
>>No, the distance from the sat is a gross approximation.<<
Why don’t you take a deep breath and do some googling. You’re wrong.
The distance is anything but a “gross approximation.” It’s a mathematical calculation that specified the distance of the plane from the satellite when it was pinged. This is according to the operators of the satellite.
They said something about the angle from the satellite when they revealed the information, but it might have something to do with the time it took the ping to reach the satellite. I don’t know if they derived the angle from that, or if they have the angle as direct information, but they indicated that the plane would have been somewhere ON the arc at 8:11.
The 8:11 arc depicts the places the airplane could have been at 8:11 Kuala Lumpur time. The question then is, starting from a point on the 8:11 arc, could it have made it to Pakistan before time to draw the 9:11 arc? Parked and powered down (or crashed) — mustn't talk to Inmarsat again!
The shaded area on the map I posted represents the places it could have flown with one minute to spare before the next satellite ping.
>> “You’re correct. He seems to think we don’t understand, but he just doesn’t” <<
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LOL!
Do you understand what it would take for a vhf signal to offer range information?
I’m quite sure that you do not, but here it is:
It would have to be generating a coded signal in addition to the data transmission, and in addition to that, a precise time signal would also have to be received and identified by at least 3, and preferably four receivers of precisely known position.
Code phase measurement is something I use constantly, and it is easy to see when someone hasn’t the slightest clue of what is involved. The vhf transmitter on the plane sends a very limited data signal that definitely does not contain a constant code rhythm.
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The ping arcs are calculated the absolute, not the maximum, distance from the satellite to the airplane.
The satellite cannot sense direction. But, by measuring the ping return time, it can estimate the distance from itself to the airplane. That defines an imaginary sphere in space, which intersects with the earth's surface at the possible locations of the airplane at the time in question.
Yep — the link at #124 shows clearly that at 7:11 it would be flying right past Pakistan on its way to Kazakistan.
If you notice the 1:11 arc corresponds to where the plane was shortly after takeoff, and then the 2:11 at the time it was painted by Malaysian radar heading for the Andamans. Those two points told the Malaysians that their data was right on the mark and forced their hand.
It turned direction between 2:11 and 3:11 and was closest to the satellite at 4:11. From 1:11 to 4:11 the plane kept getting closer to the satellite then at 4:11 it began moving away. I think that’s how they knew it was heading south.
Finding where it was on the arc was done by estimating its cruising engine speed at 525 mph.
No the arcs cannot be the course of the aircraft.
The sat cannot generate a range vector from a simple vhf signal.
No the arcs cannot be the course of the aircraft.
The sat cannot generate a range vector from a simple vhf signal.
You are wrong —
Save the BS — you are wrong
Are you a big SciFi fan?
Your posts are pure science fiction.
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The BS is all yours.
Okay, here’s a simple question for you. If the plane was to ping at exactly 8:11 and the satellite picked up the ping at 8:11 + x seconds, could a genius like you determine how far away from the satellite the ping occurred (without needing a vhf signal and four receivers).
I don’t know if that’s how they determined distance. I do know that they claimed to be able to determine distance, however, and did so as indicated by the arc.
Here’s a question for you: What exactly do you thing the arcs mean then?
>>No the arcs cannot be the course of the aircraft.<<
No one arguing with you on this has said that the arcs are used to determine the course of the aircraft.
Although I did say that you can infer from the 7:11 and 8:11 arcs at least some information on general direction during that hour.
Breaking News: Speed x Time = Distance
There’ll be a lot of crow served when this is all over, although I expect an even more entertaining wave of excuses for the science fiction and fantasy literature (the cheap kind) and B movie inspired theories we have been hearing and reading in the past couple of weeks. So little is known for certain that any fable works just fine. I wrote one myself elsewhere.
I also suspect that these theories are culturally dependent, and those heard in other countries are borne out of those cultures’ experiences, beliefs and urban legends, and would sound exotic to our ears. We’re not the only weisenheimers on the planet.
You’re way off in space on this.
There is no way that the sat can accurately determine a time differential in the plane’s vhf signal. What do you think would sync them? VHF is not even capable of high data accuracy because the frequency is too low for that.
You do not know what you are spewing. A telecom sat cannot determine an accurate range for a received signal by any means.
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