- #1
hangainlover
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Ive been going through some landers of Venus and Mars and I found they were equipped with radio doppler experiment(http://en.wikipedia.org/wiki/Venera_9 )
I was wondering what this does.
I mean there is radio signal transmitted through space everywhere and i suppose the device would measure this transmitted radio.
But is there doppler shift because the planet the lander is on is orbitting the Sun?
If the planet orbitting the Sun is the reason for doppler shift, is the doppler shift experiment simply to measure how fast the planet is going?
I was wondering what this does.
I mean there is radio signal transmitted through space everywhere and i suppose the device would measure this transmitted radio.
But is there doppler shift because the planet the lander is on is orbitting the Sun?
If the planet orbitting the Sun is the reason for doppler shift, is the doppler shift experiment simply to measure how fast the planet is going?