摘要:

Abstractthe vector analog computer (vac)is a new radio navigational instrument which enables a pilot (1) to fly a rectilinear course either on or off the Victor airways with no appreciable lateral displacement, (2) proceed directly to any given latitude and longitude with exact positional information at all times, (3) navigate directly to any specified holding point and then hold the pattern precisely, (4) make the transition to an ILS approach with extreme versatility, and (5) assist radar traffic controllers by providing more precise information about his aircratt's position in the traffic picture than radar can provide. VAC offers continuous readings of position, bearing, distance, and ground speed with signal reception from only one VORTAC station at a time. After proceeding beyond the range of the VORTAC transmitter it can still navigate for relatively long distances on mechanical memory. It is a superior anti‐collision device, is readily adaptable to all aircraft from helicopters to jets, and is capable of directing an automatic pilot independently of the magnetic directional information normally required in beam guidance systems.This paper discusses the limitations of present radio navigation systems, offers a list of criteria for an airborne navigational director with the simplicity and accuracy of visual reference, and then explains the principles of design and operation of the Vector Analog Compute

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01976.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01977.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

摘要:

Summarya unique characteristicof the marine radar situation is the existence of a second path of signal propagation by way of the reflective sea surface. For this reason, the marine radar range equation differs from the more conventional expression in several important respects, a careful examination of which can point the way to maximum performance coupled with minimum cost and power consumption in a commercial product.

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01978.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01979.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01980.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01981.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

摘要:

Summarythe twin‐channelVisual Direction Finder for the navigation of ships has been installed on a great number of vessels of different nations. Furthermore, the twin‐channel principle is used for monitoring devices (especially for short waves) and for atmospherics direction finders. In order to be able to meet the requirements for the different types of equipment used for different purposes in a suitable and rational way, the Plath All‐Frequency Visual Direction Finder has been developed. This direction finder consists of a main device being the same for all frequencies and incorporating the indicator unit, the intermediate‐frequency amplifiers, the listening device, and the correction elements for checking and correcting the amplifiers. The direction finder further incorporates different interchangeable frequency boxes containing the special circuit elements for the single frequency ranges. By means of an additional interchangeable box for remote control, the interchanging of the boxes for changing the frequency range can be

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01982.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01983.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01984.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY

ISSN:0028-1522    

DOI:10.1002/j.2161-4296.1959.tb01985.x

出版商:Blackwell Publishing Ltd    

年代:1959

数据来源: WILEY