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To deal with the rigid template matching problem in real-world scenarios, we propose a novel iterative feature-pair updating framework which is also robust to high levels of outliers, such as background changing, complex nonrigid deformation and partial occlusion. Given a pair of template image and target image, we first extract a set of corresponding feature-pairs as candidates. Then, we propose...
Utilizing a genetic algorithm, we optimized the dispersion compensation of terahertz quantum cascade laser frequency combs up to fourth-order. The fully dispersion-compensated device shows a larger dynamic range and a broader spectral coverage, exhibiting comb formation over 800 GHz.
This paper proposes a joint source channel-coding scheme based on a multi-encoder and inertial navigation module to solve the problem of poor wireless channel environment and high bit error rate. The encoder consists of three independent channels from the same source encoding the video imager for different H.264 encoding compression ratio. The propsed scheme aims to improve the system robustness under...
We consider the problem of duplicate false targets discrimination for mainlobe jamming cancellation in multistatic radar. When using the existing method of the adaptive mainlobe jamming cancellation algorithm (AMJCA) to suppress mainlobe interferences, duplicate false targets appear under the situation where a jammer is not spatially coincide with or not close to a target. False targets of this type...
Because of the effect of the space local scattering, when two non-coherent desired signals are incident in the mainlobe of the beampattern at the same time, the beampattern of the conventional adaptive beamformer can form a null in one of the desired signal directions, which will further destroy the integrity of the mainlobe and lead the output signal-to-interference-plus-noise ratio (SINR) to drop...
To improve the mobility of locomotive devices on loose, sandy terrain, protrusions or convex patterns called lugs (i.e., grousers) are attached to the surface of a locomotive modulus. Following our previous study, in which the effects of angular speed, lug sinkage length, and soil cumulative deformation on lug-soil interaction forces during the fixed-axis rotational motion were experimentally confirmed,...
The importance of mobile robots for the nuclear disaster response has been realized after Fukushima Dai-ichi nuclear power plant accident. In this paper, we propose a tracked robot for rescue and search in nuclear environment. A gamma-ray irradiation test of the robot's control system is conducted, in order to evaluate the performance of the robot in nuclear environment. The parallel test method is...
The common-mode voltage (CMV) could cause severe hazards to the induction machine winding insulation and bearings, reducing the machine lifetime. This paper proposes an improved predictive torque control (PTC) method with CMV reduction strategy which cost little and much smaller than traditional filter method. A simulation based on SIMULINK is analyzed which verify the effectiveness of the proposed...
Millimeter wave (mmWave) communication has become a promising key technology of the fifth generation (5G) communication systems, and gained extensive interests. In this paper, we examine 60 GHz mmWave channels in an indoor office environment by means of ray tracing method. Based on geometrical optic (GO) and uniform theory of diffraction (UTD), ray tracing method uses computer simulation to approximate...
It is necessary to optimize the energy-efficient (EE) performance for millimeter-wave (mmWave) wireless systems, since the power consumption problem becomes increasingly crucial at high frequency bands. In hybrid precoding mmWave systems, the EE-oriented optimized elements include the analog and digital precoders at the transmitter, the analog and digital combiners at the receiver, as well as the...
For most of those existing Distributed Compressive Video Sensing system, the same measurement rate is utilized for all non-key frames, which ignores the temporal correlativity of frames and leads to an inferior reconstruction quality. To address this issue, an adaptive measurements algorithm is proposed according to the temporal correlativity between non-key frames. The measurement rate of each non-key...
Multilingual support in global applications that integrate and filter social media data is a significant challenge due to the cost of manually developing such social media filters for each language. Using LITMUS landslide information system as an experimental platform, we compared six design alternatives with varied combinations of manually developed filters and automatically translated filters for...
In this paper, we propose a novel point set matching algorithm to improve the matching precision in the presence of non-Gaussian noises and outliers. In our method, a non-second order similarity measure known as Kernel Mean p-Power Error (KMPE) loss is employed as the matching cost function. We introduce a local optimal solution for computing the rigid transform by repeating the correspondence estimation...
In this paper, we propose a cross-layer design framework for transmitting Markov modulated Poisson process (MMPP) traffic over cognitive cooperative networks, which considers the energy efficient transmissions for different delay-aware packets. The adaptive modulation and coding (AMC) is used in the cooperative transmission system. The queueing process is considered in the buffer aided relay and source...
Aiming at the problem of sensor node deployment in underwater wireless sensor networks(UWSNs), the doublecoverage algorithm is proposed to solve the premature failure caused by excessive energy consumption. First of all, the coverage area of node is divided into grid around the mobile sensor network with AUV. Then the sensor node is analyzed to design the sensor node sensing model and the sensor node...
Person Re-Identification (person re-id) is a crucial task as its applications in visual surveillance and human-computer interaction. In this work, we present a novel joint Spatial and Temporal Attention Pooling Network (ASTPN) for video-based person re-identification, which enables the feature extractor to be aware of the current input video sequences, in a way that interdependency from the matching...
We present a new point set registration method with global-local correspondence and transformation estimation (GL-CATE). The geometric structures of point sets are exploited by combining the global feature, the point-to-point Euclidean distance, with the local feature, the shape distance (SD) which is based on the histograms generated by an elliptical Gaussian soft count strategy. By using a bidirectional...
This paper addresses a local formation tracking control for multiple first-order agents in 3D space, where each agent's trajectory converges to the given super-ellipsoid and the tracking target is movement with an unknown speed. Differing from the using of GPS in the literature, a new distributed solution is given based on local measurements of relative position. To develop the spherical formation...
In this work, the scattering field excited by the perfect conducting quadratic surface is comprehensively studied. The numerical steepest descent path method (NSDP) is invoked to calculate the high oscillatory physical optics integral. Its result agrees very well with the Gordon's integral than asymptotical method. Moreover, the computation effort for the highly oscillatory integral is frequency independent...
Electrification of the transportation sector is gradually becoming a global trend due to the environmental benefits from electric vehicles (EVs). This efficient transport module greatly reduce the pollutant emissions, the burden on fuel expenses and uncertain matters associated with fossil fuel resources, which leads to a great likelihood of increasing the PV penetration levels in the next decades...
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