<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><br></div>Solved years ago …<div><br><a href="https://ieeexplore.ieee.org/ielaam/92/8502886/8412572-aam.pdf">https://ieeexplore.ieee.org/ielaam/92/8502886/8412572-aam.pdf</a></div><div><br><div dir="ltr">-Jorge</div><div dir="ltr"><br><blockquote type="cite">On Jan 23, 2023, at 1:30 AM, Raymond Burkholder <ray@oneunified.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><span></span><br><span></span><br><span>On 1/22/23 21:54, Tom Beecher wrote:</span><br><blockquote type="cite"><span>Yes re: Iridium. Contrary to what the Chief Huckster may say, inter-sat comms are not some revolutionary thing that he invented.</span><br></blockquote><blockquote type="cite"><span>It’s also not likely to function anything like they show in marketing promos, with data magically zipping around the constellation between nodes in different inclinations. Unless they have managed to solve for the Doppler effect in a way nobody has thought of yet.</span><br></blockquote><span></span><br><span>I know of a group of satellite FPGA/RF guys who have worked on this doppler thingy. It is a solved problem.</span><br></div></blockquote></div></body></html>