An analysis of the lead-angles necessary for tracking and pointing at distant targets

✍ Scribed by Anthony N. Payne

• Book ID: 103091713
• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 727 KB
• Volume: 326
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(89)90022-7

✦ Synopsis

A rigorous analysis is made of the lead-aheadproblem that arises when a moving observer must track and point at a moving target at long range. The efSect of errors in the predict-ahead time and in the range upon lead-angles is studied. For general target and observer motions in three dimensions, s@cient conditions are exhibited under which the relative error in the lead-angles is, to good approximation, directly proportional to the relative error in range. It is jtirther shown how lead-angle requirements impose a constraint upon the maximum allowable uncertainty in range. Finally, the analysis is applied to a numerical example.