Nec Corporation

Kentarou Kudou

Shohei Ikeda

Osamu Hoshuyama

Takashi Shibata

Yuichi Abe

Masanori Kato

Hiroaki Nakajima

Nobuharu Kami

Satoshi Sonobe

Yoshitaka Nakao

Hideyuki Muto

Motoki Masaka

The learning device learns the target detection model used in the radar device. The learning device includes an acquisition unit, a learning data generation unit, and a learning processing unit. The acquisition unit acquires a reception signal generated based on the received wave and a tracking signal generated based on the reception signal from the radar device. The learning data generation unit generates learning data using the reception signal and the tracking signal. The learning processing unit learns a target detection model that detects a target from the reception signal, using the learning data.

Learning device, learning method, recording medium, and radar device

The present invention relates to a signal processing device for accurately detecting a moving object without being influenced by the speed of the moving object. This signal processing device is provided with: at least two cross-correlation calculation units for calculating cross-correlation functions for the waveform of a reflection signal obtained through the reflection, by an object, of a transmission signal having a varying frequency and different correlation waveforms generated from the waveform of the transmission signal; a combination unit for combining the at least two cross-correlation functions from the at least two cross-correlation calculation units so as not to be separated in the frequency shift direction; and a detection unit for detecting the object on the basis of the cross-correlation function resulting from the combination.

Signal processing device, signal processing method, and signal processing program

In order to achieve object detection that does not detect an object moving at a speed within a prescribed speed range, the present invention comprises at least two cross-correlation calculation units which each calculate a cross correlation function between a waveform of a reflection signal obtained when a transmission signal having changing frequencies is reflected by a target object, and a different correlation waveform generated from the waveform of the transmission signal, and a synthesis unit that synthesizes at least two cross-correlation functions from at least the two cross-correlation calculation units so as to make detection of a target object moving at a speed within the prescribed speed range less likely, and that outputs the synthesis results to a post-processing unit.

Signal processing device and signal processing method

A distributed-cooperative-information-processing device according to the present invention is allocated in a distributed manner within a predetermined field. The device measures an environment by using a sensor device; generates estimate determination information being information indicating a probability of a hypothetical set of states in the environment, based on a measurement result of the environment; receives the estimate determination information generated by another distributed-cooperative-information-processing device within the field; manages information of the another distributed-cooperative-information-processing device; and integrates the estimate determination information generated by own device and the estimate determination information received from the another distributed-cooperative-information-processing device.

Distributed-cooperative-information processing device, distributed-cooperative-information processing method, and recording medium

A wireless network relay apparatus includes a Layerswitch and a line control device as well as wireless/wired line terminating devices performing band limitation associated with an AMR function. It measures traffic passing through each line terminating device in inflow/outflow path directions. Upon detecting a modulation scheme changed due to an AMR function in a wireless area, it may specify a line terminating device so as to read a desired modulation scheme from a transmission source modulation scheme conversion table of the line control device based on traffic. It may change a local modulation scheme with a desired modulation scheme when a difference therebetween is above a predetermined number of stages. By tracking a modulation scheme changed for a transmission destination, it is possible to appropriately change a modulation scheme for a transmission source, thus suppressing traffic without discarding necessary data.

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Tokyo, Japan

Kentarou Kudou