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77 GHz millimeter wave passive imaging camera for the purpose of security is developed. In order to detect concealed objects in clothes without hindrance to flow of people at airport security checks, video rate imaging is realized using one-dimensional imaging sensor array of 25 elements and a flapping reflector. As receiving antennas, novel antipodal Fermi antenna (APFA) having required characteristics...
The objective of our research is to develop a wireless sensor network construction system by teleoperated mobile robot. Our proposed system is that mobile robot carries the sensor nodes and deploys them for constructing wireless network in the working environment. For deployment of the sensor nodes, we introduced to estimate maintainable data transfer speed based on statistic approach. When estimated...
A newly developed 3D online monitoring system provides image quality equivalent to DVD and features a new image capture method that relatively reduces the visual burden compared with conventional stereo camera systems. The remote stereo vision system (RSVS) developed by the authors synthesizes right and left images taken by the stereo cameras into single image information and is compressed using the...
After the earthquake, it is very important to recognize the situation of the disaster area as soon as possible. Therefore, the objective of our research is to realize information gathering system applying wireless sensor network technology. This paper describes about development of a novel camera node for gathering the information and also experimental results by using the camera node via wireless...
This paper describes a wireless camera node with passive pendulum mechanism. We focus on transferring captured movie via wireless network and easy setting-up operation at demonstration site.
This paper describes InP-HEMT MMICs for 94 GHz band passive millimeter-wave (PMMW) imaging sensors. In order to obtain high sensitivity with a single MMIC, we developed a new structure in MMIC to suppress unwanted feedback power that causes amplifier instability. The structure is also suited for flip chip bonding (FCB). The measured sensitivity of the MMIC was over 500,000 V/W at the frequency of...
For practical advantages of the HEED (high-efficiency electron emission device) such as a low driving voltage, a high emission current density, especially application to an ultra high sensitive compact image sensor can be expected. A prototype active-matrix HEED image sensor integrated with scanning driver circuits was developed with a HARP (high-gain avalanche rushing amorphous photoconductor) target...
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