Accession Number:

ADA191888

Title:

The Avoidance of Collisions for Newtonian Bodies with Hidden Variables,

Descriptive Note:

Corporate Author:

ROYAL SIGNALS AND RADAR ESTABLISHMENT MALVERN (ENGLAND)

Personal Author(s):

• Bramson, B. D.

Report Date:

1987-10-01

Pagination or Media Count:

12.0

Abstract:

The collision avoidance of a pair of uniformly moving bodies is considered in three dimensions. The relative motion of the bodies yields an expression relating the time to closet approach, the minimum range, the current range and its rate of change, other variables being unobservable. A Boolean relation is then proposed that is satisfied whenever the minimum range and time to closet approach simultaneously fall below given thresholds. The relation is further studied, in particular with regard to the issue of false and premature alarms. An airborne collision avoidance system is a possible application.

Descriptors:

• *COLLISION AVOIDANCE
• AIRBORNE
• FALSE ALARMS
• MOTION
• RATES
• YIELD
• UNITED KINGDOM
• BOOLEAN ALGEBRA
• THREE DIMENSIONAL

Subject Categories:

• Operations Research
• Military Aircraft Operations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE