Guidance system

About: Guidance system is a research topic. Over the lifetime, 4282 publications have been published within this topic receiving 45964 citations.

Electronic celestial navigation means

Abstract: An automatic navigation and guidance system for use in moving vehicles such as air or sea craft, and more particularly a navigation system utilizing a single automatic star or satellite tracker through which a continuous indication of the longitude and latitude of the moving vehicle may be provided to an automatic guidance system, automatic star selection being provided, the described celestial navigation device providing continuous, accurate monitoring of a further inertial navigation device during normal operation, the further inertial navigation device providing continuous navigation and orientation during interruptions of the celestial navigation device.

Real-time vehicle route guidance using vehicle-to-vehicle communication

Abstract: With advances in wireless communications and global position system-enabled devices (such as cellular phones, PDAs and car PCs), vehicle route guidance systems gradually become indispensable equipments for more and more automobile drivers because of its great convenience. Conventional route guidance systems are designed to direct a vehicle along the shortest path from the origin to the destination. However, usually, the shortest path does not result in the smallest travel time because of the dynamic traffic conditions on roadways. Therefore the state-of-the-art route guidance systems incorporate real-time traffic information to find better paths. There are two types of approaches to collecting real-time traffic information: infrastructure-based approach and infrastructure-free approach. The authors adopt infrastructure-free approach to develop a real-time route guidance algorithm, called V2R2 (Vehicle-to-Vehicle Real-time Routing). Our simulation results showed that V2R2 algorithm can effectively find better paths with less travel time than the shortest path. In addition, it can bypass void areas (i.e. the areas containing empty roads) when collecting real-time traffic information. The simulation results validate the efficiency and robustness of the proposed V2R2 algorithm.

Integrated Estimation, Guidance, and Control System Design Using Game Theoretic Approach

Abstract: In order to produce a robust coupling between the guidance system and autopilot and improve the target intercept capability, the game theoretic approach is applied to the derivation of an integrated estimation, guidance and control scheme for missile intercept problem. The objective of fomulating the game problem is to find a contoller, combining the guidance law and autopilot controller, which minimizes the final miss distance and the control energy in the worst case of target maneuver and the worst case of measurement uncertainty, and to find an estimator that provides feedback information for autopilot implementation and target tracking information for guidance processing. The controller and estimator obtained from the game theoretic approach form a linear n-dimensional compensator and the controller is solved in closed-form. In a full information and nonmaneuver case, the solution recovers the integrated guidance and control (IGC) law designed by using the linear quadratic optimal approach as presented in [Lin and Yueh, 1984(a)-(c); Yueh and Lin, 1985].

Autonomous and automatic landing system for drones

Abstract: The invention relates to an automatic aircraft landing guidance system having an electromagnetic detecting and locating device, positioned on the ground and a first multifunction transmitting/receiving radiofrequency beacon, on board each guided aircraft and transmitting in particular a continuous wave. The detecting and locating device uses the continuous wave transmitted by the beacon to perform a passive locating intended to improve the accuracy of the measurement of the angular position of the aircraft. It also comprises means for generating and periodically transmitting to the aircraft, via the beacon, information enabling said aircraft to rejoin an optimum landing path from its position. The invention applies more particularly to the guidance of autonomous and automatic aircraft such as drones in the approach and landing phase.