Abstract: A radar signal processing apparatus includes: clutter detection area setting circuitry acquiring profile information indicating reflected power of received power of reflected signal, per unit area obtained by dividing, at determined intervals, an area defined by the transmission direction of radar signal acquired by and distance from an radar apparatus, and sets a clutter detection area in the profile information; clutter characteristic calculation circuitry calculating a first representative value of reflected power of clutter in the clutter detection area and corresponding first distance; suppression filter setting circuitry calculating, based on these first representative value and distance, a parameter indicating a correspondence relation between the reflected power of clutter and a distance from the radar apparatus; and suppression processing circuitry calculating threshold based on the parameter, and determines an area in the profile information having a value of reflected power at or below the threshol

Abstract: A gas solution production apparatus 1 includes a gas dissolving unit 4 that dissolves gas of a second raw material into a liquid of a first raw material to generate a mixture liquid, and a gas-liquid separation unit 7 that subjects the liquid mixture generated by the gas dissolving unit 4 to gas-liquid separation into a gas solution that is supplied to a use point 5 and an exhaust gas that is discharged from an exhaust port 6. The gas-liquid separation unit 7 includes a capacity variable section 8, 20 that changes a capacity of an internal space of the gas-liquid separation unit 7.

Abstract: A capture point calculating portion calculates a local maximum point of the intensity of reflection from power profile information. The maximum point calculated by the capture point calculating portion is used as a capture point at which a target object is captured. A capture region calculating portion calculates at least one or more capture regions, each including a capture point. If a plurality of capture regions are calculated, a capture region grouping portion determines whether or not to perform grouping of the capture regions based on a predetermined condition. An object determining portion determines the type of the object (for example, a large vehicle, a small vehicle, a two-wheel vehicle, and a pedestrian) based on the capture region obtained as a result of grouping.

Abstract: An object detection device includes first information generation circuitry second information generation circuitry, region calculation circuitry, measured value interpolation circuitry, and object determination circuitry. The measured value interpolation circuitry which, in operation, calculates a first interpolated measured value of the first target object region using the second measured value of the second target object region or calculates a second interpolated measured value of the second target object region using the first measured value of the first target object region. The object determination circuitry which, in operation, determines the target object using a combination of the first measured value and the first interpolated measured value or a combination of the second measured value and the second interpolated measured value.

Abstract: A capture region calculation unit calculates a capture point having the local highest reflection intensity in power profile information and calculates a capture region surrounding the capture point. An edge calculation unit calculates the edges of one or more objects from image data. A marker calculation unit calculates a marker from the capture region. A component region calculation unit calculates component regions by extending the marker using the edges. A grouping unit groups component regions belonging to the same object, of the component regions. The object identification unit identifies the types of one or more objects (e.g., large vehicle, small vehicle, bicycle, pedestrian, flight object, bird) on the basis of a target object region resulting from the grouping.

Abstract: A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section detects space multiplexing transmission adaptability for divided bands obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results. Transmission format setting section sets a transmission format when carrying out radio transmission based on the detection results from space multiplexing adaptability detection section.

Abstract: A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section detects space multiplexing transmission adaptability for divided bands obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results. Transmission format setting section sets a transmission format when carrying out radio transmission based on the detection results from space multiplexing adaptability detection section.

Abstract: A radar device is provided with: a transmitter that transmits a high-frequency radar transmission signal from a transmission antenna; a controller that controls execution or stopping of transmission of the radar transmission signal; a receiver that amplifies a thermal noise signal inputted from reception antenna by using an initial gain value and quantize the amplified thermal noise signal, while the transmission of the radar transmission signal is stopped; and a gain controller that adjusts the prescribed gain value to a gain value suitable for dithering of the thermal noise signal, based on the quantized thermal noise signal.

Abstract: A first radio signal is received that was transmitted from a first antenna at a transmitter and a second radio signal transmitted from a second antenna at the transmitter different from the first antenna. The first radio signal is converted to a first orthogonal frequency division multiplexing (OFDM) frame signal, and the second radio signal is converted to a second OFDM frame signal. The first OFDM frame signal includes a grid of multiple frequency subcarriers and time periods, each time period with the frequency carriers corresponding to a first OFDM symbol such that the first OFDM frame includes first OFDM symbols. A first OFDM symbol is carried on frequency subcarriers during a time period, and the first OFDM frame includes first reference OFDM symbols located at corresponding time-frequency resource elements in the grid. Each resource element is defined by a one of the frequency subcarriers and one of the time periods.

Abstract: A first orthogonal frequency division multiplexing (OFDM) frame signal is generated that includes a grid of multiple frequency subcarriers and multiple time periods. An OFDM symbol is transmitted using multiple frequency subcarriers during a time period and includes known reference OFDM symbols assigned to corresponding time-frequency resource elements in the grid, Each resource element is defined by a one of the multiple frequency subcarriers and one of the multiple time periods. A second orthogonal frequency division multiplexing (OFDM) frame signal is generated that includes a grid of multiple frequency subcarriers and multiple time periods and includes known reference OFDM symbols assigned to corresponding time-frequency resource elements in the grid.

Abstract: Frequency analysis of each of a plurality of reception antennas and each of reception signals received by the plurality of reception antennas is performed, a power spectrum is calculated for each of the reception antennas, a standard deviation indicating a degree of conformity in a peak of the power spectrum among the plurality of reception antennas is calculated, the power spectra are corrected with use of the standard deviation, a peak is detected based on the corrected power spectra, and a target object is detected based on the detected peak.

Abstract: An object detecting device includes the following elements. Pair formation circuitry forms one or more pairs of each of the one or more first group and an associated second group selected as one or more pairing target groups by selecting from among the one or more second groups. Object region calculation circuitry calculates, on the coordinate system, one or more target object regions for each of the one or more pairs. Object recognition circuitry recognizes, on the coordinate system, each of the one or more target objects based on each of the one or more target object regions.

Abstract: An object detection apparatus includes: capture region extraction circuitry receives measurement information generated by a radar apparatus using reflected waves from each object and uses the measurement information to extract second unit regions as first capture regions from among first unit regions, the first unit regions being regions into which a measuring range of the radar apparatus has been divided, the second unit regions being regions in which each object has been captured; preliminary grouping circuitry that forms a preliminary group including a second capture region that is present within a determined range; feature quantity acquisition circuitry that calculates a feature quantity that represents an association between the preliminary group and the second capture region; discrimination circuitry that discriminates a type of each object that belongs to the second capture region; and object determination circuitry that groups the second capture region according to the type to detect that object.

Abstract: Under control of a first transmission code controlling section, a first radar transmitting section periodically transmits a first radar transmission signal with a first transmission period based on a first transmission trigger signal produced after elapse of a first delay time period from reception of a predetermined synchronization establishment signal by a first transmission trigger signal producing section. Under control of a second transmission code controlling section, a second radar transmitting section periodically transmits a second radar transmission signal with a second transmission period similarly. In accordance with the first delay time period and the second delay time period, arrival times of interference signals from the first radar transmitting section and the second radar transmitting section are within transmission zones of the second radar transmission signal and the first radar transmission signal.

Abstract: An object detection device includes a sub-cluster generating circuitry which, in operation, divides a cluster generated by a cluster generator into one or more first sub-clusters each corresponding to a part of an object having a different traveling direction or traveling speed from a main part of the object and a second sub-cluster corresponding to the main part of the object; and a speed calculating circuitry which, in operation, uses one or more capture points belonging to the second sub-cluster and calculates a traveling speed of the object.

Abstract: An object detection device includes first information generation circuitry second information generation circuitry, region calculation circuitry, measured value interpolation circuitry, and object determination circuitry. The measured value interpolation circuitry which, in operation, calculates a first interpolated measured value of the first target object region using the second measured value of the second target object region or calculates a second interpolated measured value of the second target object region using the first measured value of the first target object region. The object determination circuitry which, in operation, determines the target object using a combination of the first measured value and the first interpolated measured value or a combination of the second measured value and the second interpolated measured value.

Abstract: A radar apparatus is installed in a vehicle that moves along its direction of travel. A radar transmission unit transmits a high frequency radar transmission signal from a transmit antenna in each transmit period. In a radar reception unit, antenna system processing units each generate a correlation vector by computing the correlation between reflected wave signal from a stationary object or a moving object and the radar transmission signal. A Doppler frequency-azimuth conversion unit converts Doppler frequencies into the components of an azimuth in which the stationary object is present using an estimated vehicle speed vector for the vehicle. A stationary object azimuth estimation unit generates the power profile of the reflected wave signal using the correlation vector and a direction vector corresponding to the components of the azimuth in which the stationary object is present.

Abstract: A first radar transmitter and a second radar transmitter transmit a first modulation signal and a second modulation signal which are generated by repeating a predetermined time of code sequences, each of which has a predetermined code length, using a first code width and a second code width, respectively. An A/D converter converts the modulation signal into a discrete signal in a sampling cycle shorter than a difference between the first code width and the second code width. A positioning section separates a plurality of reception signals using a first correlation value based on outputs from the A/D converter and a first delay section corresponding to the first code width and a second correlation value based on outputs from the A/D converter and a second delay section corresponding to the second code width.

Abstract: A capture region calculation unit calculates a capture point having the local highest reflection intensity in power profile information and calculates a capture region surrounding the capture point. An edge calculation unit calculates the edges of one or more objects from image data. A marker calculation unit calculates a marker from the capture region. A component region calculation unit calculates component regions by extending the marker using the edges. A grouping unit groups component regions belonging to the same object, of the component regions. The object identification unit identifies the types of one or more objects (e.g., large vehicle, small vehicle, bicycle, pedestrian, flight object, bird) on the basis of a target object region resulting from the grouping.

Abstract: A capture point calculating portion calculates a local maximum point of the intensity of reflection from power profile information. The maximum point calculated by the capture point calculating portion is used as a capture point at which a target object is captured. A capture region calculating portion calculates at least one or more capture regions, each including a capture point. If a plurality of capture regions are calculated, a capture region grouping portion determines whether or not to perform grouping of the capture regions based on a predetermined condition. An object determining portion determines the type of the object (for example, a large vehicle, a small vehicle, a two-wheel vehicle, and a pedestrian) based on the capture region obtained as a result of grouping.