THE AGREEMENT IN RANGE AND BEARING REPORTS FROM TWO VF RADAR REPEATERS TRACKING THE SAME TARGET SIMULTANEOUSLY WITH THE B-SCOPE.
Abstract
The error indices for stationary targets developed in this study agree generally with the error indices cited in the Preliminary Instruction Book for Navy Model VF indicating equipment. Fifty-six percent of the bearing reports from two VF repeaters were in exact agreement for a stationary target, and in no case was the disagreement greater than one degree. With respect to range reports, 19% were in exact agreement, 56% agreed within 20 yards, and all reports agreed within 100 yards. When contacts are moving, these data are not appropriate. For example, for targets with a relative speed of 80 knots, only 39% of the bearing reports were in exact agreement, and only 41% of the range readings agreed within 100 yards. The agreement between two VF reports decreases markedly as the speed of a target is increased. The reliability of a single report of the position of a contact depends then upon the relative motion of that contact with respect to the position of the radar. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 20, 1947
- Accession Number
- AD0639295
Entities
People
- A. L. Sweet
- N. R. Bartlett
Organizations
- Johns Hopkins University