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Institution

Raytheon

CompanyWaltham, Massachusetts, United States
About: Raytheon is a company organization based out in Waltham, Massachusetts, United States. It is known for research contribution in the topics: Signal & Antenna (radio). The organization has 15290 authors who have published 18973 publications receiving 300052 citations.
Topics: Signal, Antenna (radio), Radar, Turbine, Amplifier


Papers
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Patent
03 Jan 1977
TL;DR: In this paper, the authors present a process and apparatus for extracting the products of kerogen in situ from an oil shale body by supplying energy selectively to the kerogen by high frequency electric fields in the frequency range between 100 kilohertz and 1000 megahertz at an intensity which heats the kerogen to a temperature range between 250° C and 500° C.
Abstract: The process and apparatus for extracting the products of kerogen in situ from an oil shale body by supplying energy selectively to the kerogen by high frequency electric fields in the frequency range between 100 kilohertz and 1000 megahertz at an intensity which heats the kerogen to a temperature range between 250° C. and 500° C. to allow pyrolysis of the kerogen prior to substantial heat transfer to the surrounding mineral portions of the oil shale.

132 citations

Patent
22 Aug 2013
TL;DR: In this paper, a risk assessment and managed security system for network users provides security services for dealing with formidable cyber threats, malware creations and phishing techniques, in combination with human-driven solutions establish an always-alert positioning for incident anticipation, mitigation, discovery and response.
Abstract: A risk assessment and managed security system for network users provides security services for dealing with formidable cyber threats, malware creations and phishing techniques. Automated solutions in combination with human-driven solutions establish an always-alert positioning for incident anticipation, mitigation, discovery and response. A proactive, intelligence-driven and customized approach is taken to protect network users. Assessments of threats are made before and after a breach. Cyber threats are identified in advance of a resulting network problem, and automated analysis locates the threats and stops them from having an adverse effect. Humans can focus on the high-level view, instead of looking at every single potential problem area. Troubling patterns may be reviewed within the network environment to identify issues. Cyber analysis is conducted to provide a baseline over time via statistically proven, predictive models that anticipate vulnerabilities brought on by social-media usage, Web surfing and other behaviors that invite risk.

132 citations

Journal ArticleDOI
TL;DR: In this paper, the parabolic ionosphere model is modified in a manner which introduces very slight changes in the electron density distribution, and it is possible to derive exact expressions describing radio-ray trajectories.
Abstract: The equation of the parabolic ionosphere model is modified in a manner which introduces very slight changes in the electron-density distribution. Using this new “quasi-parabolic” (or QP) model, it is possible to derive exact expressions describing radio-ray trajectories without introducing the approximations which are needed when dealing with the parabolic ionosphere, although magnetoionic effects are not included. The consequent accuracy of computed rays is useful as an aid in evaluating the accuracy of more versatile ray-calculation methods. Also, the exact ray expressions can be of direct use in calculating slight differences between rays which are nearly identical, for in this process, small inaccuracies can become magnified.

131 citations

Journal ArticleDOI
TL;DR: In the fall of 1997, the Atmospheric Radiation Measurement (ARM) program conducted an Intensive Observation Period (IOP) to study aerosols and five sun-tracking radiometers were present to measure the total column aerosol optical depth.
Abstract: In the Fall of 1997 the Atmospheric Radiation Measurement (ARM) program conducted an Intensive Observation Period (IOP) to study aerosols. Five sun-tracking radiometers were present to measure the total column aerosol optical depth. This comparison performed on the Southern Great Plains (SGP) demonstrates the capabilities and limitations of modern tracking sunphotometers at a location typical of where aerosol measurements are required. The key result was agreement in aerosol optical depth measured by 4 of the 5 instruments within 0.015 (rms). The key to this level of agreement was meticulous care in the calibrations of the instruments.

131 citations

Patent
17 Feb 2005
TL;DR: In this article, a path planning system and method for an object, such as a vehicle, provides a randomized adaptive path planning from starting position (RN) to a goal posotion (202) that handles real-time path planning for a vehicle operating under kinodynamic constraints in dynamically changing and uncertain environments with probabilistic knowledge of vehicle and obstacle movement.
Abstract: A path planning system and method for an object, such as a vehicle, provides a randomized adaptive path planning from starting position (RN) to a goal posotion (202) that handles real-time path planning for a vehicle operating under kinodynamic constraints in dynamically changing and uncertain environments with probabilistic knowledge of vehicle and obstacle (204a-f) movement

131 citations


Authors

Showing all 15293 results

NameH-indexPapersCitations
Peter J. Kahrilas10958646064
Edward J. Wollack104732102070
Duong Nguyen9867447332
Miroslav Krstic9595542886
Steven L. Suib8986234189
Gabriel M. Rebeiz8780632443
Charles W. Engelbracht8321028137
Paul A. Grayburn7739726880
Eric J. Huang7220122172
Thomas F. Eck7215032965
David M. Margolis7022717314
David W. T. Griffith6528814232
Gerhard Klimeck6568518447
Nickolay A. Krotkov6321911250
Olaf Stüve6329014268
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20232
20228
2021265
2020655
2019579
2018457