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US 7,924,653 B2Granted
System and method of range estimation
AssigneeTeledyne RD Instruments, Inc.
InventorMark A. Vogt
Life of this patent
Estimating the term…
Abstract
A system and method of range estimation are disclosed. In one embodiment, the method comprises transmitting beams through a medium towards a surface, receiving reflected signals from the surface, and estimating range to the surfaced based on the reflected signals and an estimate of sidelobe coupling of the beams.
Claims13
A method of estimating range to a surface of a body of water, the method comprising:
- transmitting at least one acoustic signal through the body of water;
- receiving a plurality of signals reflected from the surface;
- generating at least one weighted sum based on data indicative of the reflected signals and an estimate of sidelobe coupling;
- and
- estimating a distance to the surface based on the weighted sum.
2 more elements
A method of estimating range to a surface of a body of water, the method comprising:
- transmitting at least one acoustic signal through the body of water;
- receiving a plurality of signals reflected from the surface;
- and
- estimating a distance to the surface based on data indicative of the received signals and an estimate of sidelobe coupling,
- wherein transmitting the acoustic signal comprises transmitting four beams respectively from transducers in a Janus beam configuration, and wherein receiving the reflected signals comprises receiving four waveforms via the transducers,
- wherein estimating the distance comprises generating four transformed waveforms, wherein for each received waveform weighted versions of the other three waveforms are subtracted from the received waveform.
3 more elements
A method of estimating range to a surface of a body of water, the method comprising:
- transmitting at least one acoustic signal through the body of water;
- receiving a plurality of signals reflected from the surface;
- and
- estimating a distance to the surface based on data indicative of the received signals and an estimate of sidelobe coupling,
- wherein transmitting the acoustic signal comprises transmitting four beams respectively from transducers in a Janus beam configuration, and wherein receiving the reflected signals comprises receiving four waveforms via the transducers,
- wherein the estimate of sidelobe coupling comprises an estimate of sidelobe coupling between a selected one of the beams and at least one other beam, wherein the selected beam is oriented toward the surface.
3 more elements
Dependencies are inferred from the claim text.