Topic
Required navigation performance
About: Required navigation performance is a research topic. Over the lifetime, 343 publications have been published within this topic receiving 3477 citations. The topic is also known as: RNP.
Papers published on a yearly basis
Papers
More filters
22 Apr 1996
TL;DR: In this article, the authors present an overview of the procedure design and focus on the operational cockpit integration aspects of how the procedures are to be flown, along with details of the equipment and external factors that determine procedure availability.
Abstract: While new technology resulting in improved navigation accuracy and integrity provides the potential for shorter and more efficient departure and arrival routes and lower minima, there are a great many corollary considerations that are necessary to make revised operations safe and efficient. At Juneau, given conventional navigation capability, the terrain allows only one route into and out of the airport. However, the integration of the multisensor navigation of the Smiths Industries FMS with GPS position sensing and RNP navigation and alerting capability created the potential for using the narrow Gastineau Channel as a sea-level departure and arrival route. This paper presents an overview of the procedure design and focuses on the operational cockpit integration aspects of how the procedures are to be flown. Details of the equipment and external factors that determine procedure availability are presented along with crew training requirements. Methods for safe extraction of the aircraft in the event of equipment failure are explained, and their evaluation during the demonstration flights is presented.
4 citations
01 Jan 2013
TL;DR: In this paper, a novel satellite selection algorithm with using weighting method is presented to select the optimal satellite set with satisfying the requirement in both accuracy and integrity, and the selection threshold values for DOP and integrity is deduced from the required navigation performance (RNP) defined by International Civil Aviation Organization (ICAO).
Abstract: With the promising future of Global Navigation Satellite System (GNSS), the quantity of available satellites could dramatically increase to more than 35. Tracking all available satellites simultaneously leads to unacceptable computation burden for standalone receivers. Most satellite selection methods were therefore proposed to release the computation load with the minimum satellites set to maintain endurable positioning accuracy under the least Dilution of Precision (DOP) loss criterion. In terms of safety-of-life (SoL) navigation services, the integrity monitoring is an indispensable function. The traditional satellite selection methods should therefore be enhanced to take account of positioning accuracy and the potential integrity loss from some fault satellite, which may originates from satellite clock anomaly drift or the deformation of signals in space, e.g. ionosphere scintillation. Giving the fact that the loss of some satellite may have little difference on the DOP, but could impose a negative influence on the integrity performance, satellite selection should therefore give an insight into the selection criterion and the determination of the threshold values. A novel satellite selection algorithm with using weighting method is presented to select the optimal satellites set with satisfying the requirement in both accuracy and integrity. The selection threshold values for DOP and integrity is deduced from the required navigation performance (RNP) defined by International Civil Aviation Organization (ICAO). The performance of the proposed method was validated with using the simulated GNSS constellations. The accuracy and integrity also were compared with the typical existing satellite selection methods, i.e., maximum volume algorithm and quasi-optimal satellite selection algorithm, etc. The simulation results demonstrate that weighted satellites selection method could provide optimal satellites set with not only the better accuracy and less integrity loss, but also with a reasonable computation burden, and thus could be an edge option for the GNSS satellite selection methods.
3 citations
27 Dec 2005
TL;DR: The concepts of use for lower MEAs based on GPS and RNAV transition routes through Class B airspace are presented and the benefits and an outline of the implementation strategy are provided.
Abstract: The Federal Aviation Administration (FAA) and general aviation (GA) industry are working collaboratively to publish lower minimum en route altitudes (MEAs) for Global Positioning System (GPS)-equipped aircraft operating at low altitudes, and more direct transition routes through Class B airspace based on area navigation (RNAV) (commonly achieved in GA aircraft with GPS). These efforts are intended to improve access to airspace, safety of flight, and seamless RNAV operations in the NAS - in accordance with the FAA's roadmap to performance-based navigation published in July 2003. The roadmap initiatives were developed jointly by FAA and industry under the sponsorship of the Performance-Based Operations Aviation Rulemaking Committee (PARC). The GA representation on that committee was provided by Aircraft Owner's and Pilot's Association (AOPA), who was spearheading the movement toward achieving benefits with GPS and spurring a growth rate in aircraft equipage. This paper presents the concepts of use for lower MEAs based on GPS and RNAV transition routes through Class B airspace. The paper also provides a description of the benefits and an outline of the implementation strategy.
3 citations
TL;DR: An important question to answer is whether the current ACAS implementation can be characterized as compatible to the proposed approach geometry, because classical approaches towards parallel runways are already critical with respect to generating nuisance ACAS alerts.
Abstract: Curved or segmented approach procedures are considered beneficial for reducing or shifting the impact of aircraft noise in the approach phase of flight. Considering airports with parallel runway sy...
3 citations
Journal Article•
TL;DR: Computation result shows that the assessment model of collision risk of vertical separation based on CNS performances is feasible.
Abstract: With the breakthrough of aviation technology,international civil aviation organization put forward the communication,navigation and surveillance(CNS) system based on performances.It is composed of required communication performance(RCP),required navigation performance(RNP) and required surveillance perfor mance(RSP).Meanwhile,the separation standard is required to be reduced in order to enhance airspace capacity and decrease delays.Therefore,the assessment of collision risk of vertical separation based on CNS performances has the vital significance.A position error model was established under CNS performances circumstances and a computation formula of vertical overlap probability and lateral overlap probability were deduced that were applied to collision risk model of Reich.Assessment of collision risk of vertical separation was conducted through an example.Computation result shows that the assessment model of collision risk of vertical separation based on CNS performances is feasible.
3 citations