|
|
| An ordinary television camera shoots images by capturing beams of light reflected from a subject. This makes it difficult for a camera to capture images of a subject that cannot be seen due to light obstruction, such as from fog or smoke. In contrast, radio-waves pass through such obstructions, making it feasible to shoot subjects that are otherwise invisible. With a view toward its future application to emergency reporting from the site of an accident or fire, we are developing on a millimeter-wave TV camera that captures images of subjects using radio-waves. |
- Millimeter-wave TV-camera system
- It emits radio-waves toward a subject, and receives the reflected waves to capture images of the subject. This system scans in the direction of the receiving antenna beam to capture reflected waves from the subject.
- Millimeter-waves (60-GHz band) are used for the system. The frequency of millimeter-waves has advantages for the system's applications. These include a relatively short wavelength compared with other radio-waves that can be transmitted through fog and smoke, making it possible to construct smaller antennas.
Antenna technology for millimeter-wave TV-camera system
- We fabricated a frequency scanning antenna that electronically scans in the direction of the receiving antenna beam. High-speed scanning in the direction of the reflected waves is possible by adjusting the receiving frequency.
|
| We will improve the video resolution and remove noise, and then develop technology for real-time shooting by attaining higher speed for receiving beam directional scanning. |
Millimeter-wave TV Camera Configuration |
|
