Type-agnostic RF signal representations
First Claim
Patent Images
1. At least one non-transitory computer-readable storage medium having instructions stored thereon that, responsive to execution by at least one computer processor, cause the computer processor to:
- receive type-specific raw data representing a reflection signal caused by movement of an object within a type-specific radar field, the reflection signal comprising a superposition of reflections of a plurality of points of the object;
transform the type-specific raw data into a type-agnostic signal representation that is independent of parameters of the type-specific radar field, the transformation according to a model of the object as a set of scattering centers, each of the scattering centers corresponding to one of the points of the object; and
determine, based on the type-agnostic signal representation, a gesture or action performed by the object.
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Abstract
This document describes techniques and devices for type-agnostic radio frequency (RF) signal representations. These techniques and devices enable use of multiple different types of radar systems and fields through type-agnostic RF signal representations. By so doing, recognition and application-layer analysis can be independent of various radar parameters that differ between different radar systems and fields.
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Citations
20 Claims
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1. At least one non-transitory computer-readable storage medium having instructions stored thereon that, responsive to execution by at least one computer processor, cause the computer processor to:
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receive type-specific raw data representing a reflection signal caused by movement of an object within a type-specific radar field, the reflection signal comprising a superposition of reflections of a plurality of points of the object; transform the type-specific raw data into a type-agnostic signal representation that is independent of parameters of the type-specific radar field, the transformation according to a model of the object as a set of scattering centers, each of the scattering centers corresponding to one of the points of the object; and determine, based on the type-agnostic signal representation, a gesture or action performed by the object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method comprising:
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receiving type-specific raw data representing a reflection signal caused by movement of an object within a type-specific radar field, the reflection signal comprising a superposition of reflections of a plurality of points of the object; transforming the type-specific raw data into a type-agnostic signal representation that is independent of parameters of the type-specific radar field, the transformation according to a model of the object as a set of scattering centers, each of the scattering centers corresponding to one of the points of the object; determining, based on the type-agnostic signal representation, a gesture or action performed by the object; and passing the determined gesture or action to an application effective to control or alter a display, function, or capability associated with the application. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus comprising:
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at least one computer processor; a type-specific radar system configured to provide a type-specific radar field, the type-specific radar field provided though a modulation scheme or a type of hardware radar-emitting element, the type-specific radar system comprising; at least one radar-emitting element configured to provide the type-specific radar field; and at least one antenna element configured to receive a reflection signal caused by an object moving in the type-specific radar field; and at least one computer-readable storage medium having instructions stored thereon that, responsive to execution by the computer processor, cause the computer processor to; receive type-specific raw data representing the reflection signal caused by movement of the object within the type-specific radar field, the reflection signal comprising a superposition of reflections of a plurality of points of the object; transform the type-specific raw data into a type-agnostic signal representation that is independent of parameters of the type-specific radar field, the transformation according to a model of the object as a set of scattering centers, each of the scattering centers corresponding to one of the points of the object; determine, based on the type-agnostic signal representation, a gesture or action performed by the object; and pass the determined gesture or action to an application effective to control or alter a display, function, or capability associated with the application. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification