A computer system and method for determining a survivability aspect control signal for an aircraft is disclosed. The computer system can include a processor and a memory including software instructions adapted to cause the computer system to perform a series of steps. The steps can include providing
A computer system and method for determining a survivability aspect control signal for an aircraft is disclosed. The computer system can include a processor and a memory including software instructions adapted to cause the computer system to perform a series of steps. The steps can include providing a plurality of signature exposure models, each signature exposure model corresponding to a threat sensor and including a threat sensor characteristic and a threat operational characteristic. A portion of a mission can be selected along with one or more of the models based on the selected mission portion. The steps can include calculating a signature exposure index based on the one or more selected models and the selected mission portion and providing a survivability aspect control signal based on the signature exposure index.
대표청구항▼
1. A computer system for determining a survivability aspect control signal for an aircraft, said computer system comprising: a processor; anda memory including software instructions adapted to cause the computer system to perform the steps of: (a) providing a plurality of signature exposure models,
1. A computer system for determining a survivability aspect control signal for an aircraft, said computer system comprising: a processor; anda memory including software instructions adapted to cause the computer system to perform the steps of: (a) providing a plurality of signature exposure models, each signature exposure model corresponding to a threat sensor and including a threat sensor characteristic and a threat operational characteristic;(b) selecting a mission portion;(c) selecting, based on the selected mission portion, a plurality of the provided signature exposure models, each selected signature model corresponding to a threat estimated to have current or potential visibility of the aircraft at the selected mission portion;(d) calculating a signature exposure index based on the plurality of the provided signature exposure models and the selected mission portion, the signature exposure index being calculated by determining an individual estimate of a signature of the aircraft for each threat sensor using, the corresponding model and combining the individual estimates into the signature exposure index representing the signature exposure of the aircraft at the selected mission portion throughout a range of an aspect by representing values of the combined individual estimates; and(e) providing a survivability aspect control signal based on the signature exposure index. 2. The system of claim 1, wherein one of the signature exposure models includes a model of human perception of a characteristic of the aircraft. 3. The system of claim 1, wherein steps (a)-(e) are repeated to provide an updated signal. 4. The system of claim 1, wherein providing the aspect control signal includes providing an indication of a range of aspect values that correspond to signature exposure index values that are less than the exposure needed for engagement by any of the threats associated with the selected models. 5. The system of claim 1, wherein the survivability aspect control signal is used directly to control the aircraft. 6. The system of claim 1, wherein the survivability aspect control signal is provided in human-recognizable form. 7. A computerized method for generating a survivability aspect signal for a vehicle, the method comprising: (a) providing a selected signature exposure model to a processor programmed to generate a survivability aspect signal for a vehicle, the selected signature exposure model being selected based on a selected mission portion and corresponding to a threat estimated to have current or potential visibility of the vehicle at the selected mission portion and to a threat sensor of the threat, and including a threat sensor characteristic and a threat operational characteristic;(b) calculating, with the processor, a signature exposure index based on the selected signature exposure model and the selected mission portion, the signature exposure index being calculated by determining an individual estimate of a signature of the vehicle for each threat sensor using the corresponding model, and combining the individual estimates into the signature exposure index representing the signature exposure of the vehicle at the selected mission portion throughout a range, of an aspect by representing values of the combined individual estimates; and(c) providing a survivability aspect control signal based on the signature exposure index as output from the processor. 8. The method of claim 7, wherein the selected signature exposure model includes modeling perception of a characteristic of the vehicle by a human. 9. The method of claim 7, wherein the steps (a)-(c) are repeated to provide an updated survivability aspect control signal. 10. The method of claim 7, wherein the survivability aspect control signal is used directly to control the vehicle. 11. The method of claim 7, wherein the survivability aspect control signal is provided as a recommendation in human-recognizable form. 12. A computer program product for calculating an aspect control signal for a vehicle, the computer program product comprising: a nontransitory computer readable medium encoded with software instructions that, when executed by a computer, cause the computer to perform predetermined operations, the predetermined operations including the steps of: (a) providing a plurality of signature exposure models, each signature exposure model corresponding to a threat sensor and including a threat sensor characteristic;(b) selecting a mission portion;(c) selecting one or more of the models based on the selected mission portion, each selected model corresponding to a threat estimated to have current or potential visibility of the vehicle at the selected mission portion;(d) calculating a signature exposure index based on the one or more selected models and the selected mission portion, the signature exposure index being calculated by determining an individual estimate of a signature of the vehicle for each of the threat sensors using the corresponding model, and combining the individual estimates into the signature exposure index representing the signature exposure of the vehicle at the selected mission portion throughout a range of an aspect by representing values of the combined individual estimates; and(e) providing an aspect control signal based on the signature exposure index. 13. The computer program product of claim 12, wherein one of the signature exposure models includes a model of human perception of a characteristic of the vehicle. 14. The computer program product of claim 12, wherein steps (a)-(e) are repeated by the computer to provide an updated signal. 15. The system of claim 1, wherein the aircraft is a fixed-wing aircraft. 16. The system of claim 1, wherein the aircraft is a rotor craft. 17. The system of claim 1, wherein the aircraft is a UAV. 18. The computer program product of claim 12, wherein the signature exposure model includes a threat operational characteristic that is used to calculate the signature exposure index. 19. The method of claim 7, wherein the vehicle is a ground transport vehicle. 20. The system of claim 1, wherein the range of the aspect used in calculating the signature exposure index is a subset of a full range that could be flown, the subset based on mission objectives and aircraft performance characteristics. 21. The system of claim 1, wherein the aspect control signal indicates a heading for the aircraft to be flown with the front of the aircraft pointing in a direction other than the direction of flight. 22. The system of claim 1, wherein the aspect control signal includes pitch. 23. The system of claim 1, wherein the aspect control signal includes roll. 24. The system of claim 1, wherein the aspect control signal is selected to maximize signature exposure to draw fire.
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