 Proximity switch insensitive to interference fields |
| We claim: 1. A proximity switch for detecting the position of a machine element comprising: at ... |
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| Variable volume box |
| The variable size box of the present invention is related to those carton boxes used to contain ... |
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| Antenna for RF tag with a magnetoelastic resonant core |
| A radio frequency identification transponder (RFID tag) in accordance with the principles of the ... |
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| RFID tag having multiple transceivers |
| In accordance with one aspect of the present invention, a method of communicating information ... |
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| Identification tag |
| What is claimed is: 1. An identification tag, comprising: a) transponding means for receiving ... |
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| Piezo-electric tag |
| The inventor has devised a tag which addresses this principal problem and which is operable, for ... |
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| Proximity switch having variable gain oscillator |
| In view of such problems of conventional proximity switches, a primary object of this invention is ... |
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| Phase coherent interference signal suppression system and method |
| The present invention is an interference signal suppression system which comprises a first and ... |
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Apparatus and processes for realistic simulation of wireless information transport systems
| Details |
Inventors: Brockel, Kenneth H.; Procopio, Jr., Victor J.; Major, Paul A.; Vigants, Arvids; Pasirstein, Joseph; Wood, Richard W.;
Assignee: The United States of America as represented by the Secretary of the Army (Washington, DC)
Primary Examiner: Faile; Andrew
Assistant Examiner: Moe; Aung S.
Attorney, Agent or Firm: Zelenka; Michael, Tereschuk; George B.
Realistic models and processes for simulation of wireless information transport systems are provided which replicate all time and frequency dynamics effects on stationary and mobile communications systems. The preferred embodiment is a realsitic modeling apparatus for simulation of wireless information transport systems comprising a data entry module, a communications traffic selection module, a driver database, and voice and data input modules furnishing a simulation input to a network simulation module. The network simulation module having communications realism effects, a DIS structure, a channel error-burst model to transmit random errors, and a multipath modeling module to integrate deterministic and stochastic effects. The multipath modeling module, having a digital radio model and a Terrain-Integrated Rough Earth Model, influences the simulation inputs forming a multipath output, which is adjusted by voice and data inputs to provide a realistic, real-time simulation output signal to a display module portraying the simulated communications network and link connectivity. The network simulation module, channel error-burst model and multipath modeling module comprise a number of computer programs. A method for realistic simulation of wireless information transport systems in real-time utilizing modeling techniques and computer programs is also disclosed. |
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DETAILED DESCRIPTION It is an object of this invention to provide a communications-effects model and interactive simulation device which faithfully reproduces field conditions in terms of radio connectivity and networks effects.
It is another object of the present invention to provide a real-time, interactive communications simulation system utilizing real-time modeling, a network simulation means, a multipath modeling means, a Distributed Interactive Simulation ("DIS") interface, a transmitter means, a plurality of interference signals, a plurality of error bursts for time-varying communications channels and a number of computer programs.
The system receives input on a number of variables such as radio attributes, platform environment, radio wave propagation dynamics, noise variability and countermeasures on a real-time basis, can replicate the effects of those variables on either a digital voice or data bit stream and provides a pictorial representation of link connectivity on a computer display means.
The DIS interface allows multiple simulators to interact in a common simulated environment over a widely distributed network.
In DIS systems, each simulator or simulated platform is an entity, and interactions among the entities are communicated through a set of standard Protocol Data Units ("PDU's") which convey essential information about shared events.
It is a further object of the present invention to provide a method of interactively simulating communications effects on communications systems in real-time comprising a number of modeling techniques and computer programs, simulating a communications network to provide communications realism modeling and effects, real-time multipath modeling for realism in large integrated systems, generating a plurality of interference signals and displaying a pictorial representation of link connectivity to an operator.
It is still a further object of this invention to use the processes and methods of the present invention as advanced mission planning tools embedded in either multi-mode, multi-band radios or stand alone planning tools supporting the planning of high capacity wireless data transport systems
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Telecommunications 
