Topic
Guidance system
About: Guidance system is a research topic. Over the lifetime, 4282 publications have been published within this topic receiving 45964 citations.
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08 Dec 2005
TL;DR: PhoneGuide -- an enhanced museum guidance system that uses camera-equipped mobile phones and on-device object recognition, realized with single-layer perceptron neuronal networks for simple and light-weight object recognition.
Abstract: We present PhoneGuide -- an enhanced museum guidance system that uses camera-equipped mobile phones and on-device object recognition.Our main technical achievement is a simple and light-weight object recognition approach that is realized with single-layer perceptron neuronal networks. In contrast to related systems which perform computationally intensive image processing tasks on remote servers, our intention is to carry out all computations directly on the phone. This ensures little or even no network traffic and consequently decreases cost for online times. Our laboratory experiments and field surveys have shown that photographed museum exhibits can be recognized with a probability of over 90%.We have evaluated different feature sets to optimize the recognition rate and performance. Our experiments revealed that normalized color features are most effective for our method. Choosing such a feature set allows recognizing an object below one second on up-to-date phones. The amount of data that is required for differentiating 50 objects from multiple perspectives is less than 6KBytes.
105 citations
TL;DR: A series of manipulations putting PI and route memories into varying levels of conflict found that ants follow compromise trajectories, helping show how an insect's relatively simple decision-making can produce navigation that is reliable and efficient and that also adapts to changing demands.
102 citations
10 Dec 2002
TL;DR: In this paper, the authors presented a precision guidance law with impact angle constraint for a two-dimensional planar intercept, based on the principle of following a circular arc to the target, hence the name "circular navigation guidance".
Abstract: Presents a precision guidance law with impact angle constraint for a two-dimensional planar intercept. It is based on the principle of following a circular arc to the target, hence the name "circular navigation guidance" (CNG). This law is shown mathematically to be successful over a wide range of initial conditions. Computer simulations show that CNG performs much better than an equivalent law from the literature, and that it outperforms the standard proportional navigation guidance law in terms of miss distance. A simplified law is presented that can be used without range-to-target information.
102 citations
Patent•
13 Sep 1996
TL;DR: In this article, a swivel caster fitted with rotational and angle measurement sensors mounted to a driverless vehicle so that the lateral motion of the vehicle can be detected and accounted for by the vehicle's navigation and guidance system is described.
Abstract: This invention relates to a swivel caster fitted with rotational and swivel angle measurement sensors mounted to a driverless vehicle so that the lateral motion of the vehicle can be detected and accounted for by the vehicle's navigation and guidance system. A preferred embodiment of the present invention is a driverless vehicle comprising a navigation and guidance system having an angular motion sensor and a track wheel caster assembly equipped with a caster pivot sensor and a wheel rotation sensor to determine the relative position of the vehicle by taking into account substantially all movement of the vehicle along the surface upon which the vehicle is travelling. These sensors enable the navigation system to more accurately determine the vehicles current position and enable the guidance system to better guide the vehicle.
101 citations
04 Mar 1998
TL;DR: The experiences of Rockwell Avionics & Communications in using the CORE and SCR methods to specify the requirements for the mode logic of a Flight Guidance System for a General Aviation class aircraft are described.
Abstract: This paper describes the experiences of Rockwell Avionics & Communications in using the CORE and SCR methods to specify the requirements for the mode logic of a Flight Guidance System for a General Aviation class aircraft. The example was first specified by hand using the CORE method,inspected, then entered into a prototype tool supporting the SCR method provided by the Naval Research Lab. Despite careful review of the CORE model, use of the SCR tool revealed 27 errors, many of them sign& cant. Difficulties encountered, a brief analysis of the errors discovered, and issues for industrial use are discussed.
100 citations