摘要:

AbstractThis paper presentsa brief history of the development of the Omega system, the current status and the future plans as they are known. A detailed description of the system will not be given, as it has been thoroughly described in ION Journals and other publications.The research and development of the system is nearing completion. Charts and sky‐wave correction tables are available for the operating areas, military receivers have been developed and evaluated under actual conditions, and the station design and operating procedures are essentially frozen.The principle studies now being carried out at the Naval Research Laboratory at this time are concerned with lane identification and special problems peculiar to aircraft.New shipboard receivers are being procured by Naval Electronic Systems Command, aircraft receivers by Naval Air Systems Command and a development contract for an aircraft coordinate converter has been awarded by NRL.The Naval Electronics Laboratory Center for Command, Control and Communication is continuing with the station implementation program and developing improved sky‐wave correction tables.Omega has been in a limited operational status since the spring of 1966 according to international standards. The down times have been limited to those required for station improvements and preventive maintena

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01594.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01595.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractThis paper reviewsthe principles of operation of the major types of ship's water speed sensors in use in underwater log systems since 1950 and discusses in more detail the operation of the electromagnetic underwater log widely used by western navies. The capabilities and limitations of ship's water speed measurement are discussed briefly in order to provide proper perspective to the review of sensor characteristics.

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01596.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractTheMkNC‐2 ShipboardNavigational Plotting Systems have updated the fleet capability to meet tactical requirements of the modern Navy. System capabilities, functions and techniques presented in this paper are intended to familiarize those of navigational persuasion with the rapid advances in the old art of plotting. Solid state integration, solid state step transmitters, and independent displaced optical projection techniques are unique in the Mk NC‐2 Mod 2A discussed in this pa

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01597.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractTheNavy requiresa world‐wide continuous coverage, air, surface, and subsurface navigational capability which will support the effective accomplishment of all assigned tasks at any time and under all condition, (all weather, day, night, peace or war).In meeting requirements for navigation and control of Naval vessels we rely on great varieties of equipments and techniques ranging from the simple compass and sextant to the hyperbolas of LORAN—from dead reckoning to computations of the Navy Navigational Satellite System and many others.The ultimate goal should be one system, common to all users cost effective, with little or no er

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01598.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01599.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01600.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractSupersonic transportdevelopment programs are now mainly engrossed in engineering adjustment, evaluation, and selection activities. While meteorological information requirements for subsonic operations should about be the same as for other aircraft systems, a number of flightpath problems exist which, if exploited, could lead to greatly improved capabilities to provide direct support for aircraft operations in general as well as for SST operations. Delivery of timely information to pilots and controllers in the framework of decisions or actions to be taken will be desired. The short period of time between preflight planning activities and the time of landing at points about 1/16 of the way around the world will emphasize the need for more nearly real time observations and world wide cooperation between weather services.

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01601.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractThis paper discussesthe electronic navigation systems likely to be found on airline aircraft in the first supersonic era. The trend is toward self‐contained navigation systems, probably inertial, for primary navigation. The existing ICAO ground navigation systems will meet any remaining requirements for long‐range navigation; VOR/DME and instrument landing will do the job at the terminal ends.The paper deals with the need for back‐up station‐referenced aids to supplement self‐contained navigation systems and reviews the factors which bear on such requirements.The paper deals briefly with all‐weather operations requirements and the validity of analytical methods in the development of separatio

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01602.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

AbstractNumerous studieshave been conducted by industry, military agencies, airlines, and the Federal Aviation Agency to develop the navigation requirements for the commerical supersonic transport (SST). These studies have resulted in various navigation system recommendations; however, there is now universal agreement that the heart of the system will contain two or more inertial navigators.Possibly one of the primary reasons for looking toward inertial navigation is the increased emphasis being placed upon self‐contained precision navigation. Self‐contained systems enable the SST to operate over any route in the world independent of time and weather. Precision navigation is required for economy and safety and to ensure efficient airspace utilization in the rapidly expanding commercial air traffic. Also, the high‐speed, dynamic performance of the SST imposes severe stabilization requirements on conventional attitude and magnetic sensors, adding to the attractiveness of inertial navigators with their inherent stability even under dynamic conditions.Boeing selected triple inertial navigators to satisfy SST long‐range navigation requirements imposed by the operational environment and punctual worldwide operations subject to rigid dispatch and operational reli

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1968.tb01603.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY