When spacecraft with astronauts tries to dock with the ISS, are there special sensors in each used to track the other?

Does one usually do the detection, tracking and orientation in order to "catch the target" or do they move towards each other?

I'm just looking for a basic explanation, I know that the details may vary from one case to another.

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    $\begingroup$ Are you asking if docking can be performed automatically? $\endgroup$ Nov 21, 2020 at 14:41
  • $\begingroup$ yes somehow related to this. $\endgroup$ Nov 21, 2020 at 14:43
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    $\begingroup$ Russian Progress vessels dock automatically to the ISS all the time. Please add details to your question to explain exactly what you are asking. somehow is not an effective description. $\endgroup$ Nov 21, 2020 at 14:45
  • $\begingroup$ My question is can we install any type of sensor and trackers along with Attitude and orbit control system(AOCS) that can automatically detect and orient itself accordingly so that to catch or track the target space shuttle? $\endgroup$ Nov 21, 2020 at 14:51
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    $\begingroup$ Space shuttles haven't flown since 2011. I think you have the beginning of a good question here maybe but specifics are needed. Signing out. $\endgroup$ Nov 21, 2020 at 14:53