Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Japan Aerospace Exploration Agency

Masahiro Hagio

Yoshihito Hirano

Toshiyuki Ando

Tomoya Matsuda

Masashi Furuta

Shumpei Kameyama

Toshio Wakayama

Hiroshi Sakamaki

Kimio Asaka

Takamichi Nakamizo

Ikuya Kakimoto

Yoshinori Okuno

Syumpei Kameyama

Naoki Matayoshi

Hidetaka Kiyosue

A radar system, a radar device, and an interference avoidance method are obtained that can utilize frequency effectively even in three or more radar devices. A radar system includes three or more radar devices and a schedule management controller. Schedule management controller predicts an interference time period that is a time period during which the overlapping scanning/radiation range is generated, determines a first interference avoidance measure that is a measure to cause radar devices to use respective different use frequencies while keeping a restriction on the number of frequency channels, in the predicted interference time period, and determines a second interference avoidance measure to be performed by a radar device that is unable to avoid interference by the first interference avoidance measure.

Radar system, radar device, and interference avoidance method

A light wave radar apparatus includes a frequency deviation detecting unitfor detecting a frequency deviation fof a light signal, and a weighted average processing unitfor determining a systematic error &#x394;Vfrom the frequency deviation fdetected by the frequency deviation detecting unit, and subtracts the systematic error &#x394;Vfrom a wind velocity Vcalculated by a Doppler signal processing unit. As a result, the light wave radar apparatus can carry out a measurement of the wind velocity Vwith a high degree of precision.

Light wave radar apparatus

A measurement system for an aircraft having the three-axis components of the airspeed of the aircraft, the three-axis components of the wind speed currently encountered by the aircraft, and the wind speed distribution ahead of the aircraft simultaneously in real time. It comprises a Doppler anemometer measuring the airflow speeds at a plurality of points separated by a prescribed distance in the beam irradiation direction that changes in a time series, and an inertial data measurement device measuring the movement information and positional information of the aircraft. Moreover, the display system of the aircraft includes the horizontal two-axis airspeed of the aircraft, the three-axis components of the wind speed currently encountered by the aircraft, and information on the wind speed distribution ahead of the aircraft are displayed simultaneously in real time.

Airspeed / wind speed measurement device for aircraft, and display device for same

Growing community of inventors

Tokyo, Japan

Masahiro Hagio