While recent years have witnessed an increasing number of commercial applications unmanned aerial vehicles (UAVs), imperative problem people to face is the rapid growth malicious use. So, it for security agencies develop anti-UAV technology. The introduction deep learning (DL) has a positive influence on radar signal processing, but DL-based methodologies yet be widespread in target detection because lack unique architecture based echo characteristics and annotation method data. In this...

Recently, an incremental-type sensor-based backstepping control approach, based on singular perturbation theory and Tikhonov's theorem, has been proposed. This Lyapunov-function-based method uses measurements of variables less model knowledge, it is not susceptible to the uncertainty caused by fault scenarios. In this paper, implemented a fixed-wing aircraft with its focus handling structural changes damages. A new hybrid autopilot flight controller developed for Boeing 747-200 after...

Tiltrotor aircraft have three flight modes: helicopter mode, airplane and transition mode. A tiltrotor has characteristics of highly nonlinear, time-varying dynamics inertial/control couplings in its It can transit from the mode to by tilting nacelles, an effective controller is crucial accomplish missions. Longitudinal dynamic are described a nonlinear Lagrange-form model, which takes into account aerodynamic interferences. Reference commands for airspeed velocity attitude calculated...

The sensor based backstepping control law, on the singular perturbation theory and Tikhonov's theorem, is a novel nonlinear incremental approach. This Lyapunov function method not susceptible to model uncertainties since it uses measured state derivatives instead of an onboard model. Considering these merits, extended handle sudden structural changes in fault-tolerant flight overactuated Boeing 747-200 aircraft with allocation being considered. Because application technique, this double-loop...

High-level efficiency and safety are of great significance for improving the fighting capability an aircraft carrier. One way to enhance level is organize carrier into combat effectively. This paper studies mission planning problem a team launching, novel distributed architecture proposed. The hierarchical comprised four levels, namely, input level, coordination path execution level. Realistic constraints in each architecture, such as vortex flow effect, crowd effect motion aircraft,...

For different flight phases in an overall mission, control and allocation preferences should be pursued considering lift, drag or maneuverability characteristics. The multi-objective problem for a multi-phase mission is studied. namely climbing, cruise, maneuver gliding are defined. Firstly, drag, lift energy preference constructed. Secondly, at phases, the analytic hierarchical process method used to construct comprehensive performance index from objectives such as preferences. active set...

A microfluidic design was created to allow liquid microlens control focal length and light transmission. The of the controlled by varying volume infused into cell. cell extruded a polydimethylsiloxane film produced changeable curvature. imaging ability tuned taking advantage phase transition poly-N-isopropylacrylamide in liquid. temperature range 25.6–34.5°C changing ion concentration.

Avoiding high computational loads is essential to online aerodynamic model identification algorithms, which are at the heart of any model-based adaptive flight-control system. Multivariate simplex B-spline methods excellent function approximation tools for modeling nonlinear aerodynamics high-performance aircraft. However, efficiency multivariate method must be improved in order enable real-time onboard applications, example, systems. In this paper, a new recursive sequential strategy...

Nonlinear pilot-induced oscillations (PIOs) pose a threat to the safety of piloted aircraft in flight. This study aimed address this concern. A novel method for designing an assistance controller based on incremental model predictive control is proposed aid pilots suppressing categories 2 and 3 PIOs. In design, characteristics full pilot–aircraft system are considered through that integrates dynamics pilot, actuator, aircraft. ensures coordinates with both pilot Additionally, adaptive logic...

Terrain aided positioning (TAP) is a kind of method which acquires position information from the terrain elevation datum underneath vehicle. This has characteristics autonomy, all-weather, anti-interference, strong stealthiness and high accuracy. It widely used in navigation system for various aircrafts, cruise missiles underwater vehicles. The fundamentals TAP that it firstly measures vehicle using relevant sensors, then compares these with referenced Digital Elevation Map (DEM) through...

This paper proposes an innovative automatic carrier landing control law for carrier-based aircraft considering complex ship motion and wind environment. Specifically, a strategy is proposed to synthesize preview with adaptive nonlinear scheme. Firstly, incremental backstepping adopted in the attitude loop enhance anti-disturbance capability of aircraft. Secondly, glide slope tracking performance under severe sea conditions, predicted, forecasted optimal guidance compensate influences induced...

The sensor based backstepping (SBB) control law, on singular perturbation theory and Tikhonov’s theory, is a novel incremental type high gain approach. This Lyapunov function method not susceptible to model uncertainties since it uses measurements instead of reconstructed modeling variables. Considering these merits, we extended the SBB method, in this paper, handle sudden structural changes fault tolerant flight fixed wing aircraft. A new double-loop joint attitude controller has been...

This paper develops an intelligent pilot-aircraft system based on analysis of the developmental trend flight control system. We establish integrated and analyze characteristics from three levels (perception level, decision-making level execution level). According to respective advantages for pilot aircraft in specific circumstances, strategies can be divided into "Pilot Master/Aircraft Slave" "Aircraft Master/Pilot Slave". And Pilot Aircraft Collaboration mechanism is used allocate...