Sensor cart positioning system and method
First Claim
1. An apparatus, comprising:
- a platform configured to traverse on the ground and along a path;
one or more position sensors physically coupled to the platform and configured to provide position data as the platform traverses along the path;
a sensor arrangement physically coupled to the platform and configured to provide three-dimensional subsurface sensor data including depth data as the platform traverses along the path, the sensor arrangement comprising a plurality of sensors spaced apart from one another and at a known offset position and orientation relative to the one or more position sensors; and
a processor comprising an output and configured to;
produce geometrically correct position data by correcting for curvilinear dynamic motion errors in the position data using offset data defining the known offset position and orientation of each sensor relative to the one or more position sensors;
associate a geometrically correct position with the three-dimensional data provided by the sensors; and
provide output data comprising the three-dimensional sensor data and associated geometrically correct position data for each of the sensors at the output of the processor.
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Abstract
A movable platform has a front end, a back end, a longitudinal axis, and at least one axle oriented generally transverse to the longitudinal axis and located between the front and back ends for supporting wheels of the platform. A position sensor is affixed on the platform at a location other than at a location defined by a plane passing through the axle and normal to the longitudinal axis. The position sensor provides position data as the platform traverses a path. A sensor arrangement is supported by the platform and configured to provide subsurface sensor data as the platform traverses the path. A processor is configured to associate the position data with the sensor data relative to a reference frame and in a manner that accounts for dynamic motion of the platform.
136 Citations
26 Claims
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1. An apparatus, comprising:
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a platform configured to traverse on the ground and along a path; one or more position sensors physically coupled to the platform and configured to provide position data as the platform traverses along the path; a sensor arrangement physically coupled to the platform and configured to provide three-dimensional subsurface sensor data including depth data as the platform traverses along the path, the sensor arrangement comprising a plurality of sensors spaced apart from one another and at a known offset position and orientation relative to the one or more position sensors; and a processor comprising an output and configured to; produce geometrically correct position data by correcting for curvilinear dynamic motion errors in the position data using offset data defining the known offset position and orientation of each sensor relative to the one or more position sensors; associate a geometrically correct position with the three-dimensional data provided by the sensors; and provide output data comprising the three-dimensional sensor data and associated geometrically correct position data for each of the sensors at the output of the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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moving a platform along a path, the platform supporting one or more position sensors configured to provide position data as the platform traverses along the path, the platform further supporting a sensor arrangement comprising a plurality of sensors spaced apart from one another and at a known offset position and orientation relative to the one or more position sensors; obtaining three-dimensional subsurface sensor data including depth data using the plurality of sensors as the platform traverses along the path; producing geometrically correct position data by correcting for curvilinear dynamic motion errors in the position data using offset data defining the known offset position and orientation of each sensor relative to the one or more position sensors; associating a geometrically correct position with the three-dimensional subsurface sensor data; and providing output data comprising the three-dimensional sensor data and associated geometrically correct position data for each of the sensors. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification