Closed Loop Fire Control System
Abstract
The principal objective of the Closed Loop Fire Control System (CLFCS) program is to assess the feasibility of incorporating first burst strikepoint observations into the fire control solution for improved second burst effectiveness. Fundamentally, the problem is to deduce from a strikepoint observation at time t sub 2 the bias components of the fire control error which existed at the instant of firing, t sub 1, where t sub 2 - sub 1 is an interval slightly greater than the projectile time of flight. Among the specific sources of fire control bias error which the CLFCS concept seeks to reduce or eliminate are: range estimation error, velocity estimation error (including wind and target velocity), and gun boresight error. In general, the CLFCS is capable of removing any error component whose correlation time is long in comparison with the bullet time of flight. The system which has been designed incorporates Kalman aircraft and target state estimators. These provide the basis for an optimized open loop firing solution and the accurate estimation of the true target sightline existing at the instant of strikepoint observation. This latter capability involves the interpolation between target sightings prior to and after the strikepoint sighting by means of the target state estimator transition process. The closed loop fire control function is thereby dependent upon the accurate linear and angular velocity outputs of the aircraft state estimator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1976
- Accession Number
- ADA072656
Entities
People
- G. C. Quon
- P. Briggs
- W. S. Armstrong
Organizations
- General Electric