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This paper studies the preliminary constraints of the satellite orbit especially for boundary environment monitoring. The constraints include sub-satellite track repeating, coverage, lighting condition, CCD resolution, satellite lifetime and so on. On these conditions an orbit is determined for east and west China boundary environment monitoring.
This paper proposes an accelerated life-test method for LED drivers that use electrolytic capacitors at the output stage. The type of failure considered here is parametric. Estimated failure rates of power components suggest the electrolytic capacitor used at the driver output stage is the weakest link. As an electrolytic capacitor degrades, its capacitance decreases and its equivalent series resistance...
This paper presents a new omni-directional vision based navigation system for mobile robots in substation environments for 24h all-weather inspection. It is featured with near infrared illumination, omni-directional imaging, and artificial landmarks recognition. The extended Kalman filter (EKF) is also used to integrate the measurements from vision and odometer. Experiments have also been carried...
According to the fact that heating will affect the image collection, target identification and track, so it will affect the alignment precision of the chips and substrates in the process of chips package. Sequence images were collected through the thermosonic flip-chip bonder under the different heating temperature, their parameters distribute regulation of translation, scale ,rotation under the influence...
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