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US 10,444,353 B2Granted
Imaging system and method using improved modulated excitation
Assignee8517401 Canada Inc.
InventorChristopher John Leskiw
Life of this patent
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Abstract
An imaging system that utilizes deterministic bit sequences modulated onto an in-phase component of a carrier frequency and continuously transmitted via a transducer and received for imaging a medium and/or environment is provided. The received signal is demodulated by an in-phase demodulator and a quadrature demodulator and the demodulated components are processed to provide a spatial mapping of a medium or environment being imaged.
Claims22
An imaging system comprising:
- a deterministic bit sequence generator for generating a deterministic transmit sequence;
- an in-phase modulator for modulating the generated deterministic transmit sequence with a transmit carrier frequency to generate an imaging waveform;
- a transducer for transmitting the generated imaging waveform into a medium or environment being imaged and receiving a response signal;
- an in-phase demodulator for demodulating an in-phase component of the response signal;
- a quadrature demodulator for demodulating a quadrature phase component of the response signal;
- and
- a controller for processing the demodulated in-phase component of the response signal and the quadrature phase component of the response signal to create a spatial mapping of properties of the medium or environment being imaged from code offsets of the demodulated in-phase component, the demodulated quadrature phase component, and the deterministic transmit sequence.
4 more elements
A method of imaging a medium, the method comprising:
- generating a deterministic bit sequence by a bit sequence generator;
- performing in-phase modulation of the generated deterministic bit sequence to generate an imaging waveform;
- transmitting, by a transducer, the imaging waveform into the medium being imaged;
- receiving a response signal by the transducer associated reflected from the medium;
- performing in-phase demodulation of an in-phase component of the response signal;
- performing quadrature phase demodulation of a quadrature phase component of the response signal;
- and
- processing, by the processor controller, the demodulated in-phase component of the response signal and the demodulated quadrature phase component of the response signal to create a spatial mapping of properties of the medium being imaged from code offsets of the demodulated in-phase component, the demodulated quadrature phase component, and the deterministic bit sequence.
5 more elements
Dependencies are inferred from the claim text.