Accession Number:

AD0626448

Title:

STUDIES OF STROBING PERFORMANCE ON A PPI,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1957-10-16

Pagination or Media Count:

33.0

Abstract:

A series of experiments was designed to evaluate a radar operators ability to carry out some of the tasks required in the use of presently conceived weapons direction equipment. Positioning accuracy of the strobe dot is of the order of 12 to 1 mm. Positioning accuracy is very nearly as good, after only 9 hours practice, for 4 targets or 3 targets per sweep, as it is for only 1 target. Operating errors that is, errors other than positioning errors are reduced radically by nine hours of practice, and could probably be reduced to one or two percent with further practice, provided motivation could be maintained. Delay in tracking only 1 target is so much longer and more variable than the delay for each of 4 targets that overall error for the easier task is probably at least as great as for the more difficult. Tracking all targets up to and including four continuously offers advantages in tracking procedure which may well overcome the advantages of any reduction in load resulting from intermittent tracking. A discrepancy as small as 18 mm between rate-aided dot and target center can be detected about half the time. Discrepancies of 12 mm are detected very nearly 100 per cent of the time.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE