Detection apparatus, fish finder, and radar
AssigneeFuruno Electric Co., Ltd.
InventorRika Shiraki
Life of this patent
Estimating the term…
Abstract
A detection apparatus is provided. The detection apparatus includes a hardware processor programmed to at least calculate a first echo intensity of a first reception signal generated from a reception wave reflected on reflection objects, calculate a second echo intensity of a second reception signal generated from a reception wave reflected on the reflection objects, a signal duration of the second reception signal being shorter than that of the first reception signal, generate a first frequency distribution of the first echo intensity, generate a second frequency distribution of the second echo intensity, and extract a density of the reflection objects or an index of density of the reflection objects based on a comparison of the first frequency distribution and the second frequency distribution.
Claims18
A detection apparatus, comprising:
- a hardware processor programmed to:
- generate a first reception signal from a reception wave reflected on reflection objects, and a second reception signal from the reception wave reflected on the reflection objects, a signal duration of the second reception signal being shorter than that of the first reception signal,
- calculate a first echo intensity of the first reception signal,
- calculate a second echo intensity of the second reception signal,
- generate a first frequency distribution of the first echo intensity,
- generate a second frequency distribution of the second echo intensity, and
- extract a density of the reflection objects or an index of density of the reflection objects based on a comparison of the first frequency distribution and the second frequency distribution.
A detection apparatus, comprising:
- a transducer configured to transmit a first transmission wave and a second transmission wave, a beam width of the second transmission wave being smaller than that of the first transmission wave;
- and
- a hardware processor programmed to:
- calculate a first echo intensity of a first reception signal generated from a reception wave corresponding to a reflection of the first transmission wave on reflection objects,
- calculate a second echo intensity of a second reception signal generated from a reception wave corresponding to a reflection of the second transmission wave on the reflection objects,
- generate a first frequency distribution of the first echo intensity,
- generate a second frequency distribution of the second echo intensity, and
- extract a density of the reflection objects or an index of density of the reflection objects based on a comparison of the first frequency distribution and the second frequency distribution.
A detection apparatus, comprising:
- a transducer configured to transmit a first transmission wave and a second transmission wave, a pulse width of the second transmission wave being shorter than that of the first transmission wave, and
- a hardware processor programmed to:
- calculate a first echo intensity based on a reception wave resulting from a reflection of the first transmission wave on the reflection objects,
- calculate a second echo intensity based on a reception wave resulting from a reflection of the second transmission wave on the reflection objects,
- generate a first frequency distribution of the first echo intensity,
- generate a second frequency distribution of the second echo intensity, and
- extract a density of the reflection objects or an index of density of the reflection objects based on a comparison of the first frequency distribution and the second frequency distribution.
Dependencies are inferred from the claim text.