Method for enhancing computer controlled missile performance

• US 5,490,093 A
• Filed: 02/09/1994
• Issued: 02/06/1996
• Est. Priority Date: 04/22/1991
• Status: Expired due to Term

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Hughes Aircraft Company (Rtx Corporation)
• Inventors: Koepke, Keith A.
• Primary Examiner(s): Voeltz, Emanuel T.
• Assistant Examiner(s): CHOI, KYLE JAEHUN
• Application Number:
  US08/195,661
• Time in Patent Office: 727 Days
• Field of Search: 364/550, 364/552, 364/571.01, 364/571.02, 364/423, 364/424.02, 364/551.01, 244/3.14, 244/3.15
• US Class Current: 702/90
• CPC Class Codes: F41G 7/001 Devices or systems for testing or checking

Abstract

A computer controlled apparatus, such as a missile (10), has its various operational characteristics precisely measured at a test station (16), for example. The apparatus data processor software (14) is then modified so as to enable accessing process correction or compensation data and the apparatus program memory is reprogrammed with personalized operational characteristics for the given apparatus. In use, the software (14) compensates to achieve operation based upon actual apparatus characteristics rather than unassumed values averaged from manufacturing tolerances.

Claims

1. A method of providing increased operational efficiency of a missile that is controlled by a computer that is coupled to a program memory, said missile having initial operational characteristics that are a function of parameters that lie within predetermined tolerance ranges, and said computer operating in accordance with a computer program that is initially programmed to control the missile based upon assumed values of the operational characteristics that correspond to average values of the parameters, said method comprising the steps of measuring actual operational characteristics of the missile to produce measured values corresponding thereto;

generating correction factors that are indicative of the difference between the assumed values and the measured values;

storing the correction factors in the program memory of the missile; and

modifying the computer program so that during operation of the missile it accesses the stored correction factors to control the missile so that the missile is operated in accordance with the measured values.

2. A method as in claim 1, in which the modifying step includes storing program instructions that are based on the measured operational characteristics of the apparatus in a read only memory, and retrieving the stored program instructions for use with computer program operating in the computer.

3. A method as in claim 2, in which the missile comprises the computer and the read only memory.

4. A method as in claim 3, in which measuring of the missile operational characteristics is accomplished using a missile test station.

5. A method as in claim 2, in which the operational characteristics are selected from a group consisting of mode to mode gains, automatic gain coupling, voltage controlled crystal oscillator output, phase commands versus frequency and attenuator setting, channel to channel phase and gain, antenna gain, missile flight angle versus range, antenna boresight shift versus frequency, angle discriminates thermal noise level, random error slope table versus frequency, and direct current offset level.