James F Bacon

US Patent:

59754605, Nov 2, 1999

Filed:

Nov 10, 1997

Appl. No.:

8/967158

Inventors:

Mark E. Elkanick - Tucson AZ
James A. Bacon - Tucson AZ

Assignee:

Raytheon Company - Lexington MA

International Classification:

F41G 700

US Classification:

244 315

Abstract:

A system (10') for generating a missile guidance gain factor adapted for use with guided missiles. The inventive system includes a guidance control system (52) for obtaining current guidance parameters(55, 57) including ideal navigation gain, closing rate, line of sight rate, missile maneuverability, and missile velocity parameters. Software (56) running on a guidance control processor (54) computes a current guidance gain factor reflective of the current maneuverability of the missile from the guidance parameters (55, 57). In the illustrative embodiment, the system 10' further includes a nonlinear notch circuit (56) that generates an acceleration command (59) from the guidance parameters (55, 57) that varies in response to varying missile maneuverability parameters (57). The guidance control system (10') includes a conventional guidance law computation circuit (54, 55) and electromagnetic sensing equipment (52). An autopilot circuit (58) included in the system (10') provides the missile maneuverability parameters (57).