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Passive Snapshot Remote Imaging of Object Velocity

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Technical Report,15 Sep 2014,14 Sep 2017

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North Carolina State University at Raleigh Raleigh United States

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Quantifying a targets velocity is critical for rapid trajectory calculations. Two common active techniques for object tracking in low earth orbit LEO includes RADAR and LiDAR, in which velocity is calculated by measuring the returning fields Doppler shift andor the delivered pulses time of flight. However, active techniques are often challenged when measuring small or distant objects in medium earth orbits MEOs, geostationary orbits GEOs, or geostationary transfer orbits GTOs since the detected signal power is reduced both propagating to and from the target 1,2. Our central hypothesis is that naturally occurring narrow-band solar absorption features can be used to passively gauge an objects radial velocity using a single frame of data. The goal is to estimate an orbit using only two passive measurements of angular position and Doppler velocity.

Subject Categories:

  • Optical Detection and Detectors
  • Celestial Mechanics

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