ISS and the Doppler Shift- Part 1



We had a near overhead pass of the ISS on the 22nd of May. I used the signal from the Radio Repeater on the Station and Acquisition / Loss of Signal to calculate the altitude of the station, and time over distance as well as the doppler shift to calculate the speed of the station. Although this was a single measurement, no where near as accurate as a series of measurements would be, I am pleased to announce I verified the speed and altitude of the ISS within 10% of the stated values. It is clearly nearly 400 KM above the surface of the earth and moving at over 7 KM/Sec. To view the unedited (other than trimming both ends of the recording) pass of the ISS, see https://youtu.be/t6ir216FZDQ and do your own measurements if you wish. This speed was calculated as if the ISS passed directly over my antenna. It passed well South of me, as a result I have under calculated the speed. I will have a Part 2 where I show how to correct the velocity of the ISS for a non-overhead pass. Bob's Websites Check them OUT: Bob the Science Guy: https://www.youtube.com/user/drbob420 ResearchFlatMoon (the production channel): https://www.youtube.com/c/ResearchFlatMoon Slide Rules and Mathematics (STEM Education): https://www.youtube.com/channel/UCEXa89aIdG222z8ADB0e7GA Common Sense Science (Archive and Livestreams): https://www.youtube.com/c/CommonSenseScience Please consider becoming a Patreon of the Channel- All money donated through paypal or from the patreons goes directly into improvements in the channel (computers, cameras, lights etc) or to create educational videos (sextants, telescope equipment, etc). https://www.patreon.com/bobthescienceguy Bob Join our Discord Channel at https://discord.gg/QwcFct7DWc Help the Channel by joining our channel as a member Patreon- https://www.patreon.com/bobthescienceguy or sending a Paypal for equipment (I do take requests for content) https://www.paypal.com/donate?hosted_button_id=ED65DTMU9AB8C


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