LOW POWER INERTIAL NAVIGATION PROCESSING
First Claim
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1. A method for processing inertial navigation data, the method comprising:
- accumulating measurement data in a data buffer from a plurality of navigational sensors;
activating a processing unit periodically to read and process the accumulated measurement data in the data buffer; and
deactivating the processing unit once the accumulated measurement data is processed, such that overall power consumption of the processing unit is reduced.
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Abstract
A method and system for processing inertial navigation data are disclosed. The method comprises accumulating measurement data in a data buffer from a plurality of navigational sensors, and activating a processing unit periodically to read and process the accumulated measurement data in the data buffer. The processing unit is deactivated once the accumulated measurement data is processed, such that overall power consumption of the processing unit is reduced.
55 Citations
20 Claims
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1. A method for processing inertial navigation data, the method comprising:
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accumulating measurement data in a data buffer from a plurality of navigational sensors; activating a processing unit periodically to read and process the accumulated measurement data in the data buffer; and deactivating the processing unit once the accumulated measurement data is processed, such that overall power consumption of the processing unit is reduced. - View Dependent Claims (2, 3, 4, 5)
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6. A computer program product comprising program instructions, embodied on a machine-readable medium, the program instructions causing at least one programmable processor in an inertial navigation system to:
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periodically receive an activation signal from the inertial navigation system; once activated, process accumulated measurement data from a plurality of navigational sensors; and once the accumulated measurement data are processed, acknowledge a deactivation signal and enter a non-active state, wherein overall power consumption of the inertial navigation system is reduced by a factor of at least two. - View Dependent Claims (7, 8, 9, 10)
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11. An inertial navigation system, comprising:
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a navigation processing assembly comprising; a data buffer; and a navigation processing unit in communication with the data buffer; a plurality of navigational sensors in communication with the data buffer; and a system interface in communication with the navigation processing unit; wherein the plurality of sensors take data measurements that are accumulated in the data buffer to predict movements of the inertial navigation system; wherein the navigation processing unit is activated periodically to read and process the accumulated data measurements in the data buffer; and wherein the navigation processing unit is deactivated once the accumulated data measurements are processed, such that overall power consumption of the navigation processing unit is reduced by a factor of at least two. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification