The Furukawa Electric Co., Ltd.

Furukawa Automotive Systems Inc.

Yasushi Aoyagi

Kazutaka Kamimura

Hiroyasu Yano

Yoshihito Ishida

Hiroyuki Itohara

Kei Takahashi

Kiyoshi Inoue

Ryuji Kohno

Yoshiyuki Ishida

Toshihide Fukuchi

Nobuyuki Shimizu

Kodai Kukita

Hiroki Hirayama

Satoshi Otowa

A radar apparatus includes a first radar apparatus that transmits and receives a signal with a first frequency and has a first detection area, and a second radar apparatus that transmits and receives a signal with a second frequency different from the first frequency and has a second detection area different from the first detection area. The first radar apparatus and the second radar apparatus are arranged on a vehicle such that the first detection area and the second detection area partially overlap with each other. The second radar apparatus generates second information. The first radar apparatus generates first information, performs arithmetic integration processing based on the first information and the second information to generate integrated information, and transmits the integrated information to a higher-level apparatus.

Radar system, processing method, and processing program

A monitoring device to monitor traffic behind and on both sides of a vehicle includes a radar detecting a traveling object in a pair of first detection areas that are defined behind and on left and right sides, respectively, of the vehicle and in a pair of second detection areas that are defined behind and on the left and right sides, respectively, of the vehicle, the second detection area having a width in a vehicle width direction narrower than a width of the first detection area; a detector detecting a moving direction in which the vehicle is moving and other moving indicators to find a moving status of the vehicle; and a processor causing the radar to switch to the second detection areas when the detected moving status indicates that the moving direction of the vehicle is straight ahead and at least one other moving indicator satisfies a prescribed condition.

Monitoring device and monitoring method

The objective of the present invention is to use a simple circuit configuration and simple signal processing to provide a pulse radar device with which it is possible to reduce the impact of local signal carrier leakage on a received signal, and which makes it possible to perform high precision angle measurement using a multi-beam system. In order to measure the angle of an object, a pulse radar device is provided with at least two receiving antennas, and a reception circuit is provided with a signal selection switch for selectively switching between received signals received by the receiving antennas. The received signal contains a local signal leakage component, and a DC level of the received signal varies with the switching of the signal selection switch. In order to eliminate the impact of such DC level variations, a high-pass filter is disposed between a mixer and a frequency analyzer.

Pulse radar device

[OBJECT] To surely remove a multi-order echo or interference from another radar apparatus [ORGANIZATION] A radar apparatus transmitting pulse signals at predetermined repetition cycles and receiving and analyzing the pulse signals reflected by a target object to thereby detect the target object has: a setting means (control unit) setting so that at least a part of the repetition cycles of the pulse signals is different; a detection means (speed detection/object detection unit) detecting a distance to the target object specified by the pulse signal; and a removal means (clutter removal unit) removing the target object as clutter when the distance to the target object detected in the different repetition cycle or in a period subsequent to the different repetition cycle by the detection means and the distance to the target object detected in the period other than that by the detection means are different.

Radar apparatus and target object detection method of radar apparatus

A radar system includes a plurality of radar devices each having a transmitting unit that transmits a high frequency signal to an object, a receiving unit that receives a signal reflected from the object, an individual control unit that controls transmission and reception timings, and a converting unit that converts an output of the receiving unit into digital data, and a central processing device having an integration process unit that processes information transmitted from the radar devices in association with positional information of the radar devices, a command control unit that controls operation timings of the individual control units, and a detection process unit that performs a process for detecting the object on the digital data before being processed by the integration process unit. Digital communication isolated from the transmission and reception timing controls at the individual control unit is performed between the radar devices and the central processing device.

Radar system

Provided is a pulse generation device capable of suitably adjusting and outputting a pulse pattern by a simple configuration. A pulse generation device () includes a radio frequency oscillator () that generates a carrier wave of a certain frequency, a baseband pulse generating unit () that generates a signal having a certain pulse shape at a baseband, a timing generator () that controls a timing to generate a pulse through the baseband pulse generating unit (), and a mixer () that modulates the carrier wave output from the radio frequency oscillator () using the pulse output from the baseband pulse generating unit (). The timing generator () can adjust a waveform of the pulse output from the baseband pulse generating unit ().

Pulse generation device

A radar device capable of reducing load of a clustering process and improving the tracking performance is provided. A tracking calculation unitof a radar deviceperforms a clustering process, in which an input detected data set is grouped into clusters, and a tracking process, in which an averaged value and a prediction value are calculated for each of the clusters. In the radar device, the shape of cluster areas for grouping the detected data is defined to be a fan shape. The clustering process and tracking process using fan-shaped cluster areas can reduce the load of the clustering process and improve the tracking performance.

Radar device

A pulse radar apparatus and a control method therefor are provided that can detect information about a target with a high degree of accuracy by allowing detection of target information at all times and updating a replica signal of a noise signal in order. When the number of sets of distance data n1 is determined to be more than the number of sets of all distance data Nr in step S, it is determined that target information detection processing is finished, and replica signal generation processing is subsequently performed. The radar function is activated in steps S, S, S, and the noise signal for each distance data is obtained in step S. Thereafter, in steps S, S, S, the first, second, and third background signals, respectively, are generated, and thereafter, in step S, a replica signal is generated.

Pulse radar apparatus and control method for the same

Provided is a pulse receiver capable of receiving a burst signal and decoding the burst signal with a bit error rate reduced to a target value or less by controlling a determination threshold such that decoding success rate is equal to or less than a predetermined value. A decode unitdecodes a pulse trainto information, counts the number of decoding successes for a predetermined time period and outputs the counted number (decoding success rate DR) to a control unit. The control unituses as a basis the decoding success rate DR communicated from the decode unitto control the set value of reference voltage Vth used in the comparator

Pulse receiver and method for receiving burst signal

The burst oscillation deviceincludes the data generation part, the operation part, the signal selecting partand the burst generation part. The generation partoutputs the encoded data encoded based on data for communication. At the signal selecting part, the pulse release timing of predetermined repetition period is randomly delayed by the PPM and further delayed randomly by the minimal time by means of the PSK modulation, thereby realizing the decreasing of the peak value of the average power spectral density.

Burst oscillation device, burst oscillation method, and ranging/communication system

The invention provides a pulse radar apparatus, and a control method thereof, that permits to readily downsize and to lower its cost and allows information on an object to be detected in high precision by removing an influence of noise when a gain of a variable gain amplifier is discontinuously changed corresponding to detected distance, with a simple configuration. A variable gain amplifierconfigured to adjust a gain corresponding to a distance gate is used to be able to detect weak reflected wave from a distant object and to amplify a reflected wave from a short distance with a low gain. An offset noise from the variable gain amplifieris prepared together with interference noise and self-mixing noise in advance as a replica signal of unwanted wave and the replica signal is removed from a baseband signal in detecting the object T.

Pulse radar apparatus and control method thereof

A judging and controlling partcomprises an operation mode judging unit, a pulse width selecting unit, and a band limiting width selecting unit, wherein the operation mode judging unitreceives a signal of a gear state from a predetermined controlling device in a vehicle, and then judges the operation mode thereof. Based on a result of the judgment at the operation mode judging unit, the pulse width selecting unitand the band limiting width selecting unitcontrol a wide band impulse generating partand a band width limiting part, respectively.

Pulse doppler radar device

A ranging and communication multifunction system including a transmission unit and a receiving unit, and integrates two functions of ranging and communication in which the transmission unit includes a transmission circuit, a carrier wave modification device, and a transmission antenna. The receiving unit includes a receiving circuit, a wave detector, a low noise amplifier, and a receiving antenna, and a data modulation performed in the transmission circuit uses a PPM system. Thus, the receiving circuit provides a ranging circuit and a communication separately, so that the demodulation processing of ranging and communication can be performed in parallel.

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Tokyo, Japan

Yasushi Aoyagi