This paper considers a reconnaissance task assignment problem for multiple unmanned aerial vehicles (UAVs) with different sensor capacities. A modified Multi-Objective Symbiotic Organisms Search algorithm (MOSOS) is adopted to optimize UAVs’ sequence. time-window based model built heterogeneous targets. Then, the basic formulated as Multiple Time-Window Dubins Travelling Salesmen Problem (MTWDTSP). Double-chain encoding rules and several criteria are established under logical physical...

To reconstruct meshes from the widely-available 3D point cloud data, implicit shape representation is among primary choices as an intermediate form due to its superior power and robustness in topological optimizations. Although different parameterizations of fields have been explored model underlying geometry, there no explicit mechanism ensure fitting tightness surface input. We present response, NeuralGalerkin, a neural Galerkin-method-based solver designed for reconstructing...

Deep underground rocks exhibit significant layered heterogeneity due to geological evolution and sedimentation. Rock fracture toughness, as one of the important indicators hydraulic crack propagation, also exhibits heterogeneous distribution. In order investigate influence non-uniform toughness on this paper establishes a planar three-dimensional propagation model. The model is numerically solved using 3D displacement discontinuity method (3D-DDM) finite difference method. calculation...

The mode-order converter is a building block in multimode optical transmission and switching system. It can be used for signals carried on different mode channels. However, such devices constructed by conventional structures commonly accomplish one conversion process. because the phase-matching condition, which utilized majority of designs, usually fulfilled between only pair specific device geometry. In this Letter, we propose dual-polarization referring to concept silicon planar...

Various mode-order converters are implemented in optical mode multiplexing and switching systems. Typically, such devices can only accomplish one conversion function. In this paper, we propose a multi-channel parallel converter based on inverse-design optimization method. By using QR-code-like silicon structure, it realize the conversions of multiple channels simultaneously compact footprint. As proof concept, design demonstrate dual-channel converter, which converts TE <sub...

In this paper, we study the influence of multipath magnitude, bandwidth, and communication link number on performance existing time-reversal (TR) based fingerprinting localization approach find that accuracy deteriorates with a limited bandwidth. To improve performance, by exploiting two unique location-specified signatures extracted from Channel State Information (CSI), propose high TR fingerprint approach, HATRFLA. Furthermore, employ density-based spatial clustering algorithm to minimize...

Maintaining global consistency continues to be critical for online 3D indoor scene reconstruction. However, it is still challenging generate satisfactory reconstruction in terms of previous approaches using purely geometric analysis, even with bundle adjustment or loop closure techniques. In this article, we propose a novel real-time approach which effectively integrates both semantic and cues. The key challenge how map indicative information, i.e., priors, into metric space as measurable...

Mode converters play an essential role in mode-division multiplexing systems. A reflective mode converter (RMC), which is utilized to accomplish the conversion contra-propagation process, can fold optical path and realize exchange network. In this paper, we propose experimentally demonstrate RMC based on a silicon subwavelength structure. It convert input fundamental ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub>...

Angle-of-Arrival (AoA) is one of the important indoor localization techniques. In this paper, we study on AoA-based by using commodity Wi-Fi devices. However, most existing approaches face a critical challenge, those accuracys AoA estimation are degraded when Signal-to-Noise Ratio (SNR) becomes low. To solve problem, propose CSI forward/backward smoothing algorithm to improve performance estimation. Experimental results show that our approach can efficiently mitigate accuracy deterioration...

3D Gaussian splatting models, as a novel explicit representation, have been applied in many domains recently, such geometric editing and geometry generation. Progress has rapid. However, due to their mixed scales cluttered shapes, models can produce blurred or needle-like effect near the surface. At same time, tend flatten large untextured regions, yielding very sparse point cloud. These problems are caused by non-uniform nature of so this paper, we propose new splitting algorithm, which...

Mode-order converter is a fundamental component in multimode optical interconnect, which charge of generating different mode-orders the waveguide. In this article, we propose and design broadband, nonvolatile tunable mode-order based on platform silicon phase change materials hybrid meta-structure. When TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> mode input to device, its functionality can be selectively switched either keeping...

Abstract Sparse view 3D reconstruction has attracted increasing attention with the development of neural implicit representation. Existing methods usually only make use 2D views, requiring a dense set input views for accurate reconstruction. In this paper, we show that can be achieved by incorporating geometric priors into Our method adopts signed distance function as representation, and learns generalizable surface model from sparse views. Specifically, build more effective feature volume...

We present a two-stage method for solving the terrain following (TF)/terrain avoidance (TA) path-planning problem unmanned combat air vehicles (UCAVs). The 1st stage of planning takes an optimization approach generating 2D path on horizontal plane with no collision terrain. In 2nd planning, optimal control is adopted to generate 3D flyable UCAV that as close possible An approximate dynamic programming (ADP) algorithm used solve in by training action network solution and critical value...

Orthogonal modes are utilized to broaden the bandwidth of communication systems and mode-order converter is a pivotal components component for mode-division-multiplexing systems. To provide an alternative solution which both robust wavelength variation has ultracompact footprint, we propose new concept mode in this paper. We design two kinds prototypes Sb₂S₃ put above silicon waveguides embedded into waveguides. The footprints these devices 2.21 &#x03BC;m &#x00D7; 7.06...

A real-time conflict resolution algorithm based on model predictive control (MPC) is introduced to address the flight problem in multi-UAV scenarios. Using a low-level controller, UAV dynamic equations are abstracted into simpler unicycle kinematic equations. The neighboring UAVs exchange their predicted trajectories at each sample time predict conflicts. Then, under predesignated rule and strategy, decentralized coordination cooperation performed resolve controller structure of distributed...

This paper presents a new theory and algorithm regarding on optimal control based natural computation. simulates the survival competition of multi-races multi-individuals in astrospace which consists all races individuals. super-intelligent covers most current optimization algorithms for dynamic static parameters, is applicable to variety fields disciplines. In running process, individuals can compete its own interests, final results must be overall situation. Some numerical simulation show...

Mode conversions can be effectively accomplished in coupled mode silicon photonic waveguide systems when specific phase-matching conditions are fulfilled. However, conventional device using such principles is optimized to a certain coupling length, which only achieve fixed energy transmission. Moreover, the method tune refractive index insufficient for effective transmission manipulation. In this paper, we systematically analyze strategy silicon-based dual-waveguide coupled-mode system, and...

Neural radiance field (NeRF) has achieved great success in novel view synthesis and 3D representation for static scenarios. Existing dynamic NeRFs usually exploit a locally dense grid to fit the deformation field; however, they fail capture global dynamics concomitantly yield models of heavy parameters. We observe that 4D space is inherently sparse. Firstly, sparse spatial but temporal due continuity motion. Secondly, only valid on surface underlying scene, occupying small fraction whole...

We study the effect of multipath component and bandwidth on performance existing time-reversal(TR) based fingerprinting localization approaches. find that accuracy these approaches deteriorates with limited bandwidth. To improve performance, we propose a high resolution time reversal approach, i.e., TR-Phase, through jointly considering two unique location-specified signatures extracted from channel state information. Experimental results are presented to confirm proposed approach can...