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A low noise and wide tuning range integrated phase-locked loop (PLL) was proposed. Besides careful design of the low noise and wide tuning range voltage-controlled oscillator, a large loop bandwidth was chosen to suppress the phase jitter contributed by the voltage-controlled oscillator. In addition, a charge pump capable of improving the switching time mismatch and the dynamic current mismatch was...
In this paper, we propose a new paradigm for human-robot collaboration. In this paradigm, the collaboration properly takes advantage of the superior visual performance of the humans and the field exploration capabilities of robots, allowing the robot to only ask humans for help when needed. More specifically, we consider a robotic field exploration and classification task with limited communications...
Geomagnetic navigation is a new branch of the passive autonomous navigation technique. According to different processing methods for geomagnetic data, there are two ways to implement geomagnetic navigation, one is geomagnetic matching and the other geomagnetic filtering. The geomagnetic navigation system is intensively studied on the background of guidance and navigation for flight vehicle. The principle...
The most important part of digital frequency measurement lies in its flexible and accurate algorithm. This paper presents a fast frequency measurement algorithm based on zero crossing method using short data. This method can effectively resolve the inconsistency between the number of sampling and the accuracy and time of frequency measurement. Besides, it proved that this algorithm has a high accuracy...
Multiplying adjacent wavelet scales to obtain multiscale product can enhance significant structures and suppress noise, which makes it have predominance over other methods. Starting from the formation mechanism of multiscale product, soft-thresholding of multiscale product is proposed. Furthermore, we examine the mean square error (MSE) characteristics of soft-thresholding and hard-thresholding based...
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