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  1. Data Management
  2. DM-26155

Fix the Discontinuous Velocity of Multiple Tracking from Slewing

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      Description

      Fix the discontinuous velocity of multiple tracking from slewing. This problems comes from the slewing algorithm that assumes the initial and final velocities to be zero. The velocity of tracking target is added as a superposition method.

      In the following figures, there are two targets. The first target is at 1.2 deg with velocity = 0.01 deg/sec. The second target is at 3 deg with velocity = -0.01 deg/sec. There is a dip of velocity transition here (to 2nd target):

      This velocity transitions from 0.01 deg/sec to -0.01 deg/sec happens in 0.005 seconds, which is 20 steps in 4000 Hz. We can see the acceleration > 0 for the new slew. Therefore, this transition does not make the physical sense at all.

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        1. digVelMagnify.png
          digVelMagnify.png
          60 kB
        2. velDip.png
          velDip.png
          47 kB

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            ttsai Te-Wei Tsai added a comment -

            Tekniker will replace the existed algorithm.

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            ttsai Te-Wei Tsai added a comment - Tekniker will replace the existed algorithm.

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              Assignee:
              ttsai Te-Wei Tsai
              Reporter:
              ttsai Te-Wei Tsai
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              Te-Wei Tsai
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