Method and system for data fusion using spatial and temporal diversity between sensors
First Claim
1. A method for integrating data received from a plurality of sensors, comprising:
- receiving data from a plurality of sensors;
determining a S/N (signal-to-noise) ratio for each sensor based on signal measurements of the received data;
determining a plurality of reliability functions for the plurality of sensors from using a plurality of predetermined calculations combining each sensor reliability function which are determined and individually weighted based on said S/N ratio for each sensor and differences between predetermined operating characteristics for each sensor; and
selecting one or a predetermined combination of said plurality of reliability functions as a current reliability function based on the selected one or predetermined combination satisfying predetermined thresholds.
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Abstract
A method and system provide a multi-sensor data fusion system capable of adaptively weighting the contributions from each one of a plurality of sensors using a plurality of data fusion methods. During a predetermined tracking period, the system receives data from each individual sensor and each data fusion method is performed to determine a plurality of reliability functions for the system based on combining each sensor reliability function which are individually weighted based on the S/N (signal-to-noise) ratio for the received data from each sensor, and a comparison of predetermined sensor operation characteristics for each sensor and a best performing (most reliable) sensor. The system may dynamically select to use one or a predetermined combination of the generated reliability functions as the current (best) reliability function which provides a confidence level for the multi-sensor system relating to the correct classification (recognition) of targets and decoys.
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Citations
22 Claims
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1. A method for integrating data received from a plurality of sensors, comprising:
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receiving data from a plurality of sensors;
determining a S/N (signal-to-noise) ratio for each sensor based on signal measurements of the received data;
determining a plurality of reliability functions for the plurality of sensors from using a plurality of predetermined calculations combining each sensor reliability function which are determined and individually weighted based on said S/N ratio for each sensor and differences between predetermined operating characteristics for each sensor; and
selecting one or a predetermined combination of said plurality of reliability functions as a current reliability function based on the selected one or predetermined combination satisfying predetermined thresholds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multi-sensor system, comprising:
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a plurality of sensors for receiving data; and
at least one controller for performing the steps of;
determining a S/N (signal-to-noise) ratio for each sensor based on signal measurements of the received data;
determining a plurality of reliability functions for the plurality of sensors from using a plurality of predetermined calculations combining each sensor reliability function which are determined and individually weighted based on said S/N ratio for each sensor and differences between predetermined operating characteristics for each sensor; and
selecting one or a predetermined combination of said plurality of reliability functions as a current reliability function based on the selected at least one satisfying a predetermined threshold. - View Dependent Claims (15, 16, 17)
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18. A machine-readable medium having stored thereon a plurality of executable instructions, the plurality of instructions comprising instructions to:
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receive data from a plurality of sensors;
determine a S/N (signal-to-noise) ratio for each sensor based on signal measurements of the received data;
determine a plurality of reliability functions for the plurality of sensors from using a plurality of predetermined calculations combining each sensor reliability function which are determined and individually weighted based on said S/N ratio for each sensor and differences between predetermined operating characteristics for each sensor; and
select at one or a predetermined combination of said plurality of reliability functions to use as a current reliability function based on the selected at least one satisfying a predetermined threshold. - View Dependent Claims (19, 20, 21, 22)
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Specification