that doppler based analysis had advanced to the point where deep space probes like the Ranger craft were locatable to within accuracies of feet from 240,000 miles away
Doppler alone was not capable of that. Ranging signals, radar, and very large dish antennae were required.
You'll read in the Wiki article that as time went on the TRANSIT system provided single-pass accuracy of roughly 200 meters. VERY VERY VERY VERY VERY GOOD.
Meh. I would call it very good but only if on the high seas and not near any hazards to navigation.
one need ONLY RECEIVE THE SATELLITE SIGNALS AND DO NOTHING ELSE BUT MEASURE THE FREQUENCY SHIFTS.
Not quite.
SIMPLY KNOWING THE TRANSMITTING FREQUENCY AND THEN DETERMINING THE FREQUENCY CHANGE YIELDS DATA SUFFICIENT TO DETERMINE THE RECEIVER'S EARTH LOCATION ONCE THE EPHEMERIS OF THE SATELLITES HAVE BEEN WORKED OUT.
Nope.
Once you have your ephemeris, you just turn on your receiver.
And then enter the time and date, your latitude and longitude, geoidal height, and select a heading and speed input. Oh, wait! Make sure the EM Log is energized first. Man, that will really screw up the speed input if the EM Log isn't energized before you select it as the speed source. Whew! That was bad day.
If you wind up receiving at a frequency such and such higher, say 193.76894 Hz higher than the "rest" transmission frequency, then that "shift" will correspond to a location on the earth.
Ha ha ha!!! It will correspond to an infinite number of places on the Earth. The trick is narrowing it down to just one. Simply measuring the Doppler shift once will not do that.
It is also not a point in dispute that by way of large tracking dishes here on earth, the positions of Ranger type lunar probes could be and were determined in real time
Yes, I know. I was the one who told you that.
I would encourage NO ONE to read that. It's horrible! Patrick, how many errors can you find in the first three paragraphs?
In the case of TRANSIT, two locations were given for each reception, knowing your general location allows you to choose between the two and so you get your numbers, submerge your missile carrying sub, align your platforms, and proceed to blast the Soviet music schools with your favorite flavor of compressed tritium.
Man, all you're doing is regurgitating what we've been telling you. The really galling part is you're acting like you're lecturing us, as if you knew this stuff already and we didn't and you're letting us in on the secret, when it's the same stuff WE have been telling you for the last 30 pages. It's quite sickening to read, especially since it took us weeks to pound it into your head.
The rest of your wall'o'text you just copied off the Wikipedia article.
Now the moon does not move very fast, only 2200 miles an hour about the earth give or take.
So the objection that 2000 miles an hour is not fast enough to generate a meaningful doppler shift is not valid.
Oh! My! God!
Doppler shift is only IN the line of sight!!! An object moving away from you will generate a Doppler shift. An object moving around you will NOT generate ANY Doppler shift. I cannot believe you didn't know that!!! Bwahahahahaha!!!
Google it, dude. Google it now!
Oh, man.
P.S. that's a Stundie! The man who presumed to lecture the entire forum about Doppler analysis did not know it can only measure radial velocity.
Also, these same shifts must be taken into account in the LRRR experiments to determine the earth moon distance so precisely.
This is getting absurd. NO!!! It mustn't!
The range is determined by the time delay between transmitting the light and receiving a return signal and correcting for the slight amount the Earth rotated during that delay.
Oh, man. You really don't understand any thing you've read about Doppler shift.
Named after the man who discovered it, by the way, and not used as a unit of measure, so it should be capitalized.
But I shall address using Doppler satellite navigation from multiple transmitters from the Moon
and L-4 and L-5. Since those points are orbiting the Earth and very slowly approaching and receding their cones of Doppler shift will be almost perpendicular to their orbital paths. As such they will intersect the Earth as parallel lines all in the same area. To get an accurate fix the cones need to cross as close to perpendicular as possible. NAVSAT allowed that. Moon and L-4/-5 do not.