...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...

.... The simulation and flight test results using a small UAV are presented in the end. This section reviews the existing navigation methods that utilize aircraft kinematics in the estimation. The proposed scheme in this paper, which is mainly discussed in the next section, is motivated by the two existing...

.... 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 The remainder of the paper...

...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...

...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...

... Navigation Error analysis Data communication systems There are mainly seven kinds of errors in Global Positioning System (GPS) positioning (orbital error, satellite clock error, ionospheric error, tropospheric error, multipath error and receivers' clock error and noises), of which ionospheric error...

...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...

... © MCB UP Limited 2001 --> Trimble Navigation 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...

... In 1945 the Decca service first became commercially available to users who would hire a receiver from the Decca Navigator company. By the early 1980s the widespread availability of low-cost microprocessors made inexpensive Decca receivers available for purchase. The loss of rental revenue...

... Initial operating capability of GPS for civil use was obtained in 1992 and it was first envisaged as a supplementary navigation system. The GNSS panel was created by ICAO in 1994 in response to the final report of the FANS committee, which recognised the need to prepare the technical...

... © 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...

..., 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). Ferranti believes that system manufacturers can now take advantage of this high performance...

... © 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...