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The Water Vapor simulated from the Weather Research&Forecast Model (WRF-WV) has been utilized for InSAR (Interferometric Synthetic Aperture Radar) atmospheric correction in recent years, but its reliability in terms of accuracy of the water vapor itself and application in InSAR process are controversial. Therefore this paper inspected it by comparing WRF-WV with Medium Resolution Imaging Spectrometer...
This study highlights the importance to develop a scientific mathematical allocation model that is operable and practicable, explores the relationship between vehicle fuel consumption and the various influencing factors. Apart from the factors recognized in the previous studies, such as cylinder, displacement and weight, this study addresses the significance of the involvement of road and environmental...
We report a continuously tunable optical delay line with the maximum delay > 1ns by combining digital switchable delay line and microring slow light structures built on the 60-nm-thick silicon waveguide platform.
In this paper, a second harmonic filtering technique is presented for improvement of phase noise performance of a Class-C LC-VCO IC. The second harmonic filter is employed to terminate the output port of the LC-VCO in low impedance at second harmonic frequency, which mainly prevents the noise modulated by the transistor nonlinearities. In addition, since the impedance of the second harmonic filter...
We report our recent progress on large-scale integrated silicon optical routers and buffers. The optical router is made of a 16×16 switch fabric with low loss and loss crosstalk. The optical buffer can provide nanosecond-range continuous delay tuning.
Plane extraction of point cloud data plays an important role in the three-dimensional scene reconstruction, while region growing algorithm which could separate the points with specific attributes is a typical method to deal with this kind of problem. In this paper, methods of plane extraction based on region growing algorithm are studied, and they are divided into four categories according to the...
This paper presents a low-voltage and low phase noise LC-VCO IC with simplified noise filtering in 180-nm CMOS technology. The novel VCO IC includes a cross-coupled pMOSFET pair, an LC resonator, buffer amplifiers and a tail inductor for noise filtering. The novel and conventional LC-VCO ICs are designed, fabricated and fully tested on wafer. At a power supply voltage of only 0.5 V, the novel VCO...
In this paper, we consider amplify-and-forward cognitive relay networks in a spectrum-sharing environment. We present the performance analysis under two different partial relay selection (PRS) schemes, namely source-relay partial relay selection (SR-PRS) and relay-destination partial relay selection (RD-PRS). Specifically, we consider interference power constraint on secondary source and relay nodes,...
This paper investigates the performance of amplify-and-forward (AF) cognitive relay networks with partial relay selection (PRS) in a spectrum-sharing context. The PRS schemes can be divided into two different types: source-relay PRS and relay-destination PRS, which are respectively called SR-PRS and RD-PRS for short. Different from most of the existing studies which only consider interference power...
Real-time face alignment is very crucial in many applications, such as performance-driven facial animation and face recognition. However, traditional face alignment techniques are only good at dealing with static pictures. Little attention has been paid to face alignment in video. In this paper, we present a novel framework named particle filter based AAMs (PF-AAMs), for retrieving the parameters...
Vehicular Ad Hoc Networks (VANETs) have appealed to revolutionize the traffic flow control system and human driving experiences. In this paper, we introduce an efficient anonymous batch authenticated and key agreement scheme using self-certified public keys to simultaneously authenticate multiple requests sent from different vehicles and negotiate different session keys meanwhile. Additionally, the...
The moon-earth communication link budget is usually referenced in the selection and configuration of the hardware of transmitting and receiving stations. This paper provides a budget method and designs a budget process of communication link between lunar detectors and ground stations. Besides, the paper provides a method to design the parameters of ground stations, detectors and communication channels...
Sequential Monte Carlo method has received intense attention among the literature due to its promising applicability to non-linear and non-Gaussian problems. However, while adopting the standard particle filtering method to the area of image restoration, two main drawbacks are found. Firstly, the computational complexity, which mainly comes from a procedure called resample (in a serial implementation),...
This paper describes a novel structure and its implementation method of a long-distance network echo canceller. The proposed NEC system copes with double talking situations by using a modified double-talk detector. An improved adaptive filter structure is also presented based on algorithm delay estimator. To deal with residual echo after filtering a nonlinear processor is employed. The resulting algorithm...
In telephony application, many NEC adaptation algorithms could not be implemented in real time system because of computational complexity. A novel implementation method for NLMS adaptive filter was presented based on sliding window structure and algorithm delay control technique. This method reduces adaptive filter order and computational complexity. Real time implementation of this new NEC structure...
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