What kind of sensor to use for line tracking? (white tape alignment 2019)

My team is thinking about lining up with the rocket and the cargo ship using the white tape on the ground and I am pretty confused about what kind of sensor to use for that purpose. Here are the types of sensors I have come across with:

  • reflectance sensor array (have a very short sensing distance)
  • photoelectric sensor (have no idea how it works, therefore have no idea how to use it)
  • colour sensor (going to require multiple of them, which is expensive)

It would be amazing if someone could help us choose the best type of sensor for our alignment feature/line tracking issue.

Also, this is my first post on chiefdelphi. So I apologize if this question has already been answered or the question has been asked poorly.

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Yes, been asked. #2 is really another case of #1, but putting it together out of two parts yourself. As inexpensive as these reflectance sensors are, and with some of them good to 50mm or 80 mm (2 or 3 inches), this seems the way to go.

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Great! Thanks a lot!