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A new calibration procedure was proposed for strap down inertial measurement unit (IMU) in a body reference frame which was independent of the turntable. The proposed methodology required no precise mechanical platform for the calibration of the accelerometer and the rate-gyros. Error models of IMU parameters were derived from the physical characteristic of three accelerometers and three rate gyros,...
In clustering wireless sensor networks, cluster-head nodes are backbone network to process and transmit data. Vast intra-cluster nodes obtain sleep, reduce data delay, lighten cluster head burden. In this paper, we derived the smallest active node number K, and achieved a new intra-cluster active nodes scheduling algorithm. The experimental results show that the result of the algorithm in saving energy...
In this paper, an auditory filtering based microphone array post-filter is proposed to enhance the quality of the output signal. By using a gammatone filterbank to band pass each input of the array, the input signals are decomposed into a two-dimensional T-F representation. Then, for each auditory filter channel, the post-filter's coefficients are estimated in each frame using the decomposed multi-channel...
The theoretic foundation of traditional microphone array post-filters is the assumption that the noise between sensors is uncorrelated. However, this assumption is inaccurate in real environments since the correlated noise exists. In this paper, a generalized microphone array post-filter is proposed to deal with both the correlated and uncorrelated noise in environments and a novel perceptual filter...
In this paper, a new multi-robot system framework is introduced to solve the problem of multi-robot map building. Compared with the classical architectures introduced in the literature, this kind of framework enhances overall system performance, especially in reducing calculations and communications, improving real-time performance. Meanwhile a general basic belief assignment function (gbbaf) is constructed...
A mini-invasive system for long-term bladder urine pressure measurement system is presented. Not only is the design cost reduced, but also the reliability is enhanced by using a 1-atm canceling sensing instrumentation amplifier (IA). Because the urine pressure inside the bladder does not vary drastically, both the sleeping and working modes are required in order to save the battery power for long-term...
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