A height finder is a ground-based aircraft altitude measuring device. Early height finders were optical range finder devices combined with simple mechanical computers, while later systems migrated to radar devices. The unique vertical oscillating motion of height finder radars led to them also being known as nodding radar. Devices combining both optics and radar were deployed by the U.S. Military.[1]
- ^ "Anti-Aircraft Fire Control Sets". Department Of The Navy - Naval Historical Center. Archived from the original on 2007-05-27. Retrieved 2007-08-04.