Panasonic Intellectual Property Management Co., Ltd.

Panasonic Automotive Systems Co., Ltd.

Kenta Iwasa

Hidekuni Yomo

Takaaki Kishigami

Ryosuke Shiozaki

Junji Sato

Tomohiro Yui

Naganori Shirakata

Yohei Morishita

Kazuma Nishiyasu

Mei Okamoto

To provide an improved radar apparatus capable of expanding the aperture length per antenna element and the aperture length of the virtual reception array antenna. One of a transmission array antenna and a reception array antenna includes a first antenna element group having m-pieces of antenna elements arranged at a first interval Dalong a first axis direction (m is an integer of 1 or larger), and the other one of the transmission array antenna and the reception array antenna includes a second antenna element group having (n+1)-pieces of antenna elements arranged at a second interval D(n) along the first axis direction (n is an integer of 1 or larger).

Radar apparatus

False detection of a ghost is prevented. A radar apparatus includes: transmission circuitry, which, in operation, transmits a radar signal; main reflective object detection circuitry, which, in operation, detects a main reflective object in a detection area using a reflected wave of the radar signal; in-area determination circuitry, which, in operation, determines a main area where a ghost caused by a reflective object outside the detection area and the main reflective object is located, the main area being inside the detection area; and auxiliary reflective object detection circuitry, which, in operation, detects a position of an auxiliary reflective object in the main area using a reception signal of the reflected wave of the radar signal, the auxiliary reflective object being located farther than the main reflective object on an extension of a line connecting the radar apparatus and the main reflective object.

Radar apparatus and radar system

This receiving array antenna includes multiple receiving antenna rows, and each of the receiving antenna rows contains a first number of antennas; of the first number of antennas contained in the receiving antenna rows, mutually adjacent antennas are arranged separated by a first interval in a first axis direction and by a second interval in a second axis direction. The transmitting array antenna includes multiple transmitting antenna rows arranged in the second axis direction at an interval that is the first number times the second interval, each of the transmitting antenna rows contains multiple antennas, and the multiple antennas contained in the transmitting antenna rows are arranged in the same position in the second axis direction and in different positions in the first axis direction. The antennas contained in the transmitting antenna rows adjacent in the second axis direction are arranged in different positions in the first axis direction.

Radar device and transmitting/receiving array antenna

A radar apparatus includes a plurality of transmit antennas that transmits a plurality of transmission signals using a multiplexing transmission, and a transmission circuit that applies phase rotation amounts corresponding to combinations of Doppler shift amounts and code sequences to the plurality of transmission signals. Each of the plurality of transmission signals is assigned a different combination among the combinations. The combinations include at least two combinations of a same number of multiplexing by the code sequences.

Each of the plurality of transmission antenna groups includes a plurality of transmission antennas that are disposed at second intervals in a first direction, and are disposed at fourth intervals each of which is an interval of an integral multiple of a third interval in a second direction. Each of the plurality of reception antenna groups includes a plurality of reception antennas that are disposed at fifth intervals in the first direction, and are disposed at sixth intervals each of which is an interval of an integral multiple of the third interval in the second direction. The difference between the second interval and the fifth interval is the first interval, and the difference between the fourth interval and the sixth interval is the third interval.

Radar device

One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.

A radar apparatus includes a radar transmission circuit that transmits a radar signal from a transmission array antenna, and a radar reception circuit that receives, from a reception array antenna, a reflected wave signal that is the radar signal reflected at a target. One of the transmission array antenna and the reception array antenna includes a first antenna element group having m antenna elements arranged at a first interval Dalong a first axis direction, wherein m is an integer of 2 or larger. The other one of the transmission array antenna and the reception array antenna includes a second antenna element group having n antenna elements arranged at a second interval Dalong the first axis direction, wherein n is an integer of 4 or larger. The second interval Dincludes several different intervals.

Provided is an improved estimation and identification device that estimates the position of a plurality of identification targets and identifies the plurality of identification targets. The estimation and identification device has a configuration comprising: a plurality of tracking devices that emit electromagnetic waves or sound waves and detect the position of an identification target on the basis of reflected electromagnetic waves or sound waves from the identification target holding a wireless transmission terminal; a plurality of wireless communications devices that wirelessly communicate with wireless communications terminals and receive identification information for the wireless communications terminals from the wireless communications terminals; and an analysis circuit that identifies the identification target and estimates the position of the identification target, on the basis of the results of the wireless communications results, the detected position of the identification target, and the identification information.

Estimation and identification device and estimation and identification system

A radar device includes radar transmission and receiving circuits. The radar transmission circuit transmits one or more transmission signals, each having a transmission period Tr. The radar receiving circuit receives one or more reflected signals in which the transmission signals are reflected by an object and estimates a direction of the object based on the reflected signals. The radar transmission circuit includes Nt transmission antennas. A control circuit sets a transmission gap period between a first and second periods, with the transmission gap period being a period during which the transmission signals are not transmitted. The first period is equal to an integral multiple of a period Np, the period Np is equal to or more than Nt times the transmission period Tr, and the second period is set after the first period and is equal to an integral multiple of the period Np.

Radar apparatus and radar method

The target detection accuracy of a radar apparatus is improved. The radar apparatus includes transmission circuitry, which, in operation, transmits a transmission signal using a plurality of transmit antennas, and reception circuitry, which, in operation, receives using a plurality of receive antennas a reflected wave signal that is the transmission signal reflected by an object, in which the plurality of transmit antennas include at least one first transmit antenna and a plurality of second transmit antennas, and, in a first direction, an absolute value of a difference between, on one hand, a spacing between the at least one first transmit antenna and a phase center of those of the plurality of second transmit antennas which are used for beam synthesis, and, on another hand, a spacing between adjacent receive antennas of the plurality of receive antennas is a defined value based on a wavelength of the plurality of transmission signals.

Provided is a radar apparatus including: an estimation circuit; and a processing circuit. The estimation circuit outputs a plurality of pieces of data each including information in which a distance to a target and a direction to the target are estimated based on a reception signal including a reflected wave that is a radar signal reflected by the target. The processing circuit determines a range side lobe component in the target based on the estimated distance and the estimated direction of one or more pieces of data selected from the plurality of pieces of data.

Radar apparatus and method for determining range side lobe

Performance of a radar apparatus including a plurality of transceiver ICs is improved. The radar apparatus includes: a plurality of integrated circuit, which, in operation, perform signal processing on a received signal; and a signal processing circuit, which, in operation, compensates for a deviation between the plurality of integrated circuits based on a difference between leak radio wave components received by receive antennas corresponding respectively to the plurality of integrated circuits.

A radar apparatus includes a plurality of transmit antennas that transmits a plurality of transmission signals using a multiplexing transmission, and a transmission circuit that applies phase rotation amounts corresponding to combinations of Doppler shift amounts and code sequences to the plurality of transmission signals. Each of the plurality of transmission signals is assigned a different combination among the combinations. The combinations include at least one combination of different numbers of multiplexing by the code sequences.

Growing community of inventors

Kanagawa, Japan

Kenta Iwasa