...Zhiwei Kang; Xin He; Jin Liu; Tianyuan Tao Purpose The authors proposed a new method of fast time delay measurement for integrated pulsar pulse profiles in X-ray pulsar-based navigation (XNAV). As a basic observation of exact orientation in XNAV, time of arrival (TOA) can be obtained by time delay...

...Rong Wang; Jianye Liu; Zhi Xiong; Qinghua Zeng Purpose The Embedded GPS/INS System (EGI) has been used more widely as central navigation equipment of aircraft. For certain cases needing high attitude accuracy, star sensor can be integrated with EGI to improve attitude performance. Since...

.... Practical implications The proposed coning correction algorithm can be implemented with angular rate sensors in UAV (unmanned aerial vehicle) and other aircrafts attitude estimation for navigation and control applications. Originality/value Singular perturbation is an effective method for structuring...

... and gyro biases is obtained in the navigation frame, providing a much simpler approach than usually taken in the literature, since it relies on direct quaternion differentiation. The state vector associated to the error dynamics possesses six components: three are associated to the quaternion error...

...Pengxin Han; Rongjun Mu; Naigang Cui Purpose The purpose of this paper is to address the flaws of traditional methods and fulfil the special fault‐tolerant re‐entry navigation requirements of reusable boost vehicle (RBV). Design/methodology/approach A kind of improved estimation method based...

... gyros. Sanghyuk Park can be contacted at: park@kau.ac.kr © Emerald Group Publishing Limited 2011 Estimation Navigation Kinematics Flight High‐quality, low‐drift sensors are required in the traditional attitude and heading reference systems (AHRS) with inertial navigation...

.... It will be a challenging task in the near future to enable manned and unmanned aircraft to fly in the same airspace. Path control is a necessary part for fully autonomous UAVs to perform these missions successfully. Systems and control theory Flight control Navigation © Emerald Group Publishing Limited...

...Yu Jie; Wang Xinlong; Ji Jiaxing Purpose The purpose of this paper is to improve the tracking performance of the carrier phase lock loop (PLL) in the strapdown inertial navigation system/global positioning system (SINS/GPS) integrated system with an innovative scheme of ultra‐tight integration...

... at: Equation 13 Then: Equation 14 Expand cos X in equation (6): Equation 15 With formula above, equation (5) then becomes: Equation 16 And in equation (9) which is used to calculated ΔT ′ with an elevation angle of E, F is: Equation 17 Navigation Error...

...Dah‐Jing Jwo; Shun‐Chieh Chang Purpose The purpose of this paper is to conduct the particle swarm optimization (PSO)‐assisted adaptive Kalman filter (AKF) for global positioning systems (GPS) navigation processing. Performance evaluation for the PSO‐assisted Kalman filter (KF) as compared...

...Liu Jian‐feng; Rong Si‐yuan; Cui Nai‐gang Purpose The purpose of this paper is to consider relative navigation – a vital technology to satellites formation flying, and to propose a new concept for relative navigation determination along with a technical approach for its practical implementation...

...Jian Hou; Naiming Qi; Hong Zhang Purpose To present a stereo matching algorithm which satisfies the need of visual navigation on outdoor natural terrain for lunar rover or other mobile robots. Design/methodology/approach A feature‐assisted matching algorithm is presented to generate dense...

...Ch. Hajiyev; O. Akgun In this study, Integrated Air Data – Doppler Navigation System is developed and presented. Air Data System and Doppler Radar have different advantages and disadvantages in applications in flight control and navigation systems. The reason of this integration is to achieve...

... © MCB UP Limited 2002 --> GALILEO Satellites Navigation Keywords: GALILEO, Satellites, Navigation It is reported that PricewaterhouseCoopers has been appointed by the European Commission to develop a business plan for the GALILEO project as a basis for getting private...

... Trimble wins military contract from Boeing Keywords: Trimble, Navigation Trimble has announced that it has been awarded a contract from the Boeing Company for the US Air Force KC-10A Aircraft Global Air Traffic Management(GATM) upgrade program. The contract is valued at approximately...

... After more than 50 years of providing radio positioning for mariners and aviators, the Decca Navigator system recently ceased to operate. The occasion was marked earlier by a farewell conference at Church House in London where users and pioneers of the system met to review the development...

... Positioning Navigation Satellites Adding to abilities Since these comments were made developments have taken place in various parts of the world leading towards an eventual seamless, satellite navigation capability. One of two US systems, the wide area augmentation system (WAAS...

... © MCB UP Limited 2000 --> Trimble Positioning Navigation Military Dual use 12-channel GPS receiver Keywords: Trimble, Positioning, Navigation, Military Trimble recently announced that its TASMAN 2 ARINC-12 has received Technical Standard Order (TSO...

... --> Ferranti Technologies Navigation Positioning Keywords Ferranti Technologies, Navigation, Positioning Ferranti Technologies Limited (FTL) reports that it has launched the FTS-10A inertial grade accelerometer for aeronautical and terrestrial navigation and positioning systems (Plate 3...

... © MCB UP Limited 2000 --> Racal Satellites Navigation Keywords Racal, Satellites, Navigation Racal is playing a lead role in the development of the EGNOS (European Geostationary Navigation Overlay Service) and Galileo satellite navigation systems, following a series...