Abstract: At its tenth Air Navigation Conference (1991), the ICAO endorsed the so-called Communication, Navigation, Surveillance/Air Traffic Management concept, CNS/ATM. This concept envisages the use of data link communications, satellite navigation and automatic dependent surveillance (ADS). The Swedish Civil Aviation Administration (SCAA) has been involved in the technical and operational development of an integrated CNS/ATM since 1990. The system concept is based on the use of GNSS and a time synchronised VHF data link (VDL Mode 4/STDMA). The system is intended to support all elements of CNS. This paper discusses the requirements for an integrated CNS system. It also gives an overview of the VDL mode 4/STDMA system as well as description of on-going trials and standardisation effort within ICAO.

Abstract: Global Navigation Satellite Systems (GNSS) have the ability to fulfill the navigation accuracy requirements of most applications. The systems do however lack continuity and integrity to meet the re ...

Abstract: Military aircrews are just beginning to experience the benefits of having Global Positioning System (GPS) quality navigation information available in the cockpit Aircraft integrated in accordance with the Navy GPS Integration Guidance (GIG) receive a two-frequency military receiver with Precise Positioning Service (PPS) accuracy, a MIL-STD-1553B digital navigation data bus, electronic data transfer capability, and area navigation (RNAV) capability displayed on the flight instruments By the year 2000, most military aircraft will have GPS installed in accordance with the congressional mandate There are several upgrades for military GPS being studied but the biggest change will come when the operators start to apply this new level of platform navigation accuracy in their tactical operations A significant improvement in situational awareness and tactical effectiveness is possible when friendly military aircraft self-report their accurate position and identification

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.

Abstract: We report the results of a part-task simulation evaluating the separate and combined effects of an electronic moving map display and newly developed HUD symbology on ground taxi performance, under moderate- and low-visibility conditions. Twenty-four commercial airline pilots carried out a series of 28 gate-to-runway taxi trials at Chicago O'Hare. Half of the trials were conducted under moderate visibility (RVR 1400 ft), and half under low visibility (RVR 700 ft). In the baseline condition, where navigation support was limited to surface features and a Jeppesen paper map, navigation errors were committed on almost half of the trials. These errors were virtually abolished when the electronic moving map or the HUD symbology was available; in addition, compare, the baseline condition, both forms of navigation aid yielded an increase in forward taxi speed. The speed increase was greater for HUD than the electronic moving map, and greater under low visibility than under moderate visibility. These results suggest that combination of electronic moving map and HUD symbology has the potential to greatly increase the efficiency of ground operations, particularly under low-visibility conditions.

Abstract: The Goddard Space Flight Center Flight Dynamics and Mission Operations Divisions have jointly investigated the feasibility of engineering modular Global Positioning SYSTEM (GPS) navigation software to support both real time flight and ground postprocessing configurations. The goals of this effort are to define standard GPS data interfaces and to engineer standard, reusable navigation software components that can be used to build a broad range of GPS navigation support applications. The paper discusses the GPS modular software (GMOD) system and operations concepts, major requirements, candidate software architecture, feasibility assessment and recommended software interface standards. In additon, ongoing efforts to broaden the scope of the initial study and to develop modular software to support autonomous navigation using GPS are addressed,