Eli Brookner has filed for patents to protect the following inventions. Phased array antenna using stacked beams in elevation and azimuth. Patent number: Abstract: A radar system uses a rotating antenna array having rows that display dispersive properties while feeding multiple radiating elements.
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Eli Brookner has filed for patents to protect the following inventions. Phased array antenna using stacked beams in elevation and azimuth.
Patent number: Abstract: A radar system uses a rotating antenna array having rows that display dispersive properties while feeding multiple radiating elements. In some embodiments, the radiating elements are dual polarized. In at least one embodiment, beam spoiling may be used to generate an unfocused transmit beam that covers an entire elevation range of interest. Digital beam forming may be used during a receive mode to achieve a stack of narrow-width receive beams in elevation. Frequency scanning may also be used to achieve stacked beams in azimuth.
Type: Grant. Filed: August 20, Date of Patent: May 7, Assignee: Raytheon Company. Inventors: Eli Brookner, Thomas V. Sikina, Peter R. Drake, Yuchoi F. Lok, Jacqueline M. Bourgeois, Daniel F. Publication number: Type: Application.
Publication date: February 25, Applicant: Raytheon Company. Methods and apparatus for 3D radar data from 2D primary surveillance radar and passive adjunct radar. Abstract: Methods and apparatus for combining radar signals of a two-dimensional primary radar covering a surveillance area and a passive adjunct radar to provide three-dimensional data for targets and weather. In exemplary embodiments, high beam and low beam data from the primary radar and elevation data from the adjunct radar can be used to mitigate interference from clutter, such as wind farms.
Filed: December 20, Date of Patent: February 2, Drake, Bradley Fournier, Anthony M. Ponsford, Yueh-Chi Chang. System and method for social networking of aircraft for information exchange.
Abstract: A system and method for exchanging information between aircraft Sensors on a first aircraft provide data about the first aircraft's environment, including hazards such as turbulence, icing, lightning, or birds. The system transmits the data to receiving systems in other aircraft , which display the data, to warn the pilots flying the other aircraft of potential hazards.
The pilot of the first aircraft may supplement the information with visual observations, about birds or unmanned aerial vehicles, for example. In one embodiment, the information is transmitted from aircraft to aircraft over a data link using ADS-B. In another embodiment, a first aircraft may transmit data to a second aircraft, which may relay, or re-transmit, the data to a third aircraft.
Filed: January 15, Date of Patent: December 8, Assignee: Raytheon Canada Limited. Inventors: Jian Wang, Yuchoi F. Lok, Anthony M. Ponsford, Oliver H. Hubbard, Eli Brookner, Robert W. Publication date: July 17, Moving target detector for radar systems. Abstract: Various embodiments are described herein for a moving target detector that processes input data to perform detection for a current range cell.
The moving target detector includes a Doppler filter bank module for processing the input data to provide several Doppler outputs for the current range cell, a no-land-clutter path for processing several input data sets related to the several Doppler outputs to provide detection data by performing peak selection on each of the several input data sets and performing detection on the results of the peak selection, a land-clutter path for processing the several input data sets to provide detection data by performing Constant False Ala?
Filed: November 1, Date of Patent: June 22, Inventors: Jian Wang, Eli Brookner. Moving Target Detector for Radar Systems. Publication date: April 16, Efficient technique for estimating elevation angle when using a broad beam for search in a radar. Abstract: A method and apparatus for estimating elevation angle when using a broad search beam such as a cosecant-squared beam is provided.
The range of a target detected during a search with a broad beam covering a broad angular search area is determined. Based on the determined range, consecutive beams are transmitted at increasing search elevation angles in the broad angular search area. Echo signals of the consecutive beams are used to determine an elevation angle estimate for the target.
Filed: October 10, Date of Patent: May 2, Inventor: Eli Brookner. Multiple radar combining for increased range, radar sensitivity and angle accuracy. Abstract: A mechanism for combining signals of multiple radars to achieve increased range, radar sensitivity and angle accuracy is provided.
A first signal beam is radiated from an antenna of a first radar in the direction of a target. A second signal beam is radiated from an antenna of a second radar in the direction of the same target.
The echo signals from the first signal beam and the second signal beam are received at both radars. The echo signals received at the first radar are processed to produce first radar processed echo signals and the echoes signals received at the second radar are processed to produce second radar processed echo signals.
The first and second radar processed echo signals are combined to form an aggregate value. Date of Patent: December 20, Inventors: Eli Brookner, David V. Manoogian, Fritz Steudel.
Publication date: November 17, Publication date: October 20, Array antenna having multiple independently steered beams. Abstract: An array antenna system for forming multiple independently steered beams is described. The antenna system includes series or parallel feed circuits and phase shifters which are not disclosed directly in the signal path between the feed circuits and antenna elements included in the array antenna system.
Filed: June 26, Date of Patent: May 15, Inventors: Eli Brookner, Richard L. Upton, John R. Mather, Michael G. Sarcione, William J.
Filed: January 14, Date of Patent: August 15, Method of processing in a pulse doppler radar. Abstract: A method of operating a pulse Doppler radar to increase the probability of detection of an airborne target is shown to consist of transmitting interrogating pulses with a high pulse repetition frequency and processing received signals using any conventional pulse Doppler technique for echo signals having a Doppler shift frequency outside the spectrum of Doppler shift frequencies of clutter and using a DPCA technique at a submultiple of the pulse repetition frequency for echo signals having a Doppler shift frequency within the spectrum of Doppler shift frequencies of clutter.
Filed: August 29, Date of Patent: April 3, Adaptive beam forming apparatus. Abstract: A beam forming apparatus is provided having a plurality of beam ports producing a corresponding plurality of differently directed beams, each one of such beams being associated with a corresponding one of the beam ports, one of such beams being directed at a desired signal source and at least one of the beams being directed at an interfering signal source.
A processor is coupled to the beam ports, for combining signals at such beam ports into a composite signal with the ratio of the power of the desired signal component of such composite signal to the power of the interfering signal component of such composite signal being increased from the ratio of the power in such desired and interfering signal components at the one of the beam ports associated with the beam directed at the desired signal source.
The beam forming apparatus directs one of the beams at a desired signal source and an additional beam at each one of a number of interfering signal sources. Filed: August 12, Date of Patent: January 19, Inventors: Eli Brookner, James M. Technique for obtaining wide bandwidth with optically fed array. Abstract: An optically fed lens array radar system is provided with an on boresight ed and a plurality of off boresight feeds.
When looking far enough off boresight, one switches from the on boresight feed to the appropriate off boresight feed. The off boresight feeds simultaneously cover a large scan angle and achieve with the on boresight a large bandwidth over the largest scan angle of interest. Filed: November 19, Date of Patent: May 24,
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