Using Doppler Calculations To Determine ISEE-3 Spin Rate

We already have telemetry that shows ISEE-3 to be spinning at 19.16 rpm (spec is 19.75 ±0.02 rpm). According to a tweet by @baudline (Erik) "This Doppler oscillation measurement shows that the ISEE-3 spacecraft is spinning at 19.163 ±0.02 RPM."

Erik used some of our raw data to make this calculation. The software he used is Baudline a time-frequency browser he makes that is used for scientific visualization of the spectral domain.

Click on image to enlarge.

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