On Thu, Dec 17, 2015 at 05:50:01PM -0300, juan wrote:
On Wed, 16 Dec 2015 12:03:14 -0500 Oh, ok. I thoguht the first landing was a bit a earlier. Anyway, so far nobody has provided much detail about radar resolution. Yes, voice comms were allegedly followed, yes, you can bounce microwaves off the moon. I freely admit that my knowledge of em theory is lacking so I wouldn't mind more information to go from "bounce radio off the moon" (big object) to realtime tracking of a small object on the moon, and without any fancy 'dsp' microelectronics.
It is insanity to reply to this, but then I am quite certifiably insane... Observers saw and timed the osculation of the radio signals from the spacecraft in lunar orbit by the moon, saw correct Doppler for the geometry involved from THEIR site (and correct timing for osculation)... and saw the coherence of the signal consistent with a direct transmission and not scattering from the moons rough surface (which creates a considerable smearing of a wideband signal such as the Unified S band telemetry/voice signals (and especially the video) due to the path length (and thus delay) differences from all the random reflecting points. And during the journey to the moon and back from the moon the angles (and Doppler) observed when the highly directional ground antennas were pointed for maximum signal corresponded to those predicted from the the path of the spacecraft and not the reflective moon - which eventually was not even close to being inside the beamwidth of the antennas used. To simulate all of this realistically for tracking sites in multiple continents would have required actually sending dummy spacecraft to carry out the maneuvers and emit the "fake" signals. And if it isn't obvious, not only did private hams follow radio signals from these missions, but so did various professional intelligence and radio (and optical) astronomy sites, some with substantial dish antennas and sophisticated gear. Many of these folks (some obviously not friendly to the USA) would have to have been very well fooled - or in on the game - not to have called our bluff. -- Dave Emery N1PRE/AE, die@dieconsulting.com DIE Consulting, Weston, Mass 02493 "An empty zombie mind with a forlorn barely readable weatherbeaten 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in celebration of what could have been, but wasn't and is not to be now either."