Patent ID: 11921201
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A signal processing device comprising:
a data transmitter/receiver configured to:
transmit a transmission wave a position of which changes in a first direction and which spreads in a second direction orthogonal to the first direction,
acquire observation data received, and
generate a matrix of the observation data in the first direction and the second direction, as a reception signal matrix, with a value of a position in the reception signal depending on a signal strength;

a range processor configured to:
specify a range in the second direction in an imaging matrix, and
set a sparse vector including a component in the first direction of the specified range, the imaging matrix having a number of divisions in the first direction of the imaging matrix greater than a number of divisions in the first direction of the reception signal matrix, and the imaging matrix having a same number of divisions in the second direction as the reception signal matrix;

a reconstruction processor configured to perform reconstruction processing using the reception signal matrix and the sparse vector to calculate a component of the sparse vector; and
a synthesis processor configured to synthesize the sparse vector being a result of the range processing and the reconstruction processing while moving the range, to generate the imaging matrix.