In this paper, consistently trained Artificial Neural Network controller for automatic ship berthing is discussed. Minimum time course changing manoeuvre is utilised to ensure such consistency and a new concept named ‘virtual window’ is introduced. Such consistent teaching data are then used to train two separate multi‐layered feed forward neural networks for com...

Gravity disturbance compensation is an important technique for improving the positioning accuracy of high-precision inertial navigation systems (INS). Aiming at current problems resolution gravity background field and robustness algorithm are insufficient compensation. In this study, error frequency characteristics INS caused by disturbances investigated. The with a spatial 1’ × from satellite ...

Detection of moving objects around a mobile robot is important for safe navigation. This paper presents a robust technique for detecting moving objects using a laser ranger mounted on a mobile robot. After the initial alignment of the two consecutive laser scans, each laser reading is segmented and classified according to object type, stationary, non-stationary or indeterminate. Laser reading s...

At present, the traditional indoor pedestrian navigation methods mainly include dead reckoning (PDR) and zero velocity update (ZUPT), but these have problem of error divergence during long time navigation. To solve this problem, under condition not relying on active sensing information, combined with characteristics particles “not going through wall” in map building structure, an improved adapt...

With the increasing use of smart weapons and sensors, there is a need to consider potential areas of improvement that could positively affect large numbers of systems with common concepts and approaches. One area that lends itself to this desire is the improvement of high precision high bandwidth antenna and mirror steering systems that can be utilized across a broad range of sensor systems. Po...

Getting a land vehicle's accurate position, azimuth and attitude rapidly is significant for vehicle based weapons' combat effectiveness. In this paper, a new approach to acquire vehicle's accurate position and orientation is proposed. It uses biaxial optical detection platform (BODP) to aim at and lock in no less than three pre-set cooperative targets, whose accurate positions are measured befo...

Background: The aim of this study was to evaluate the accuracy of initial bone cutting of the distal femur and the proximal tibia in TKA using an image-free navigation system. Methods: From February 2006 to March 2013, we evaluated 60 knees in 50 patients using an image-free navigation system (Navigation: Stryker Navigation Cart System; Software: Stryker Knee Navigation; Ver2.0: Stryker Orthopa...

Intelligent mining is the demand and inevitable development direction of China’s coal industry, shearer attitude based on 3D spatial scale essential basic information for realizing intelligent at fully mechanized face. The traditional monitoring technology cannot meet accuracy requirements sensing equipment an working In this paper, principle strapdown inertial navigation system (SINS), a real-...

Fine alignment of main ship power plants mechanisms and shaft lines provides long-term and failure-free performance of propulsion system while fast and high-quality installation of mechanisms and shaft lines decreases common labor intensity. For checking shaft line allowed stress and setting its alignment it is required to perform calculations considering various stages of life cycle. In 2012 J...