-
公开(公告)号：US10250292B2
公开(公告)日：2019-04-02
申请号：US16018159
申请日：2018-06-26
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo , Andrew Kowalevicz , Benjamin P. Dolgin
Abstract: An optical receiver and communication method receives an optical signal by an optical resonator to provide an intensity modulated signal indicative of a modulation of the optical signal. The intensity modulated signal is provided to a channel receiver of a plurality of channel receivers, and the channel receiver recovers from the intensity modulated signal a multipath version of a transmitted signal embedded in the modulation of the optical signal. The channel receiver's output is combined with an output of at least one other of the plurality of channel receivers to provide a combined output signal.
-
公开(公告)号：US10177856B2
公开(公告)日：2019-01-08
申请号：US15679470
申请日：2017-08-17
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo
Abstract: Optical signal receivers and methods are provided that include an optical resonator that allows optical signal energy to enter and accumulate inside the optical resonator. A portion of optical signal energy is emitted from the optical resonator at an output, such that the emitted optical signal energy is disturbed when a transition occurs in the received optical signal energy. A detector aligned with the output detects the emitted optical signal energy and is configured to detect the disturbance to the emitted optical signal energy and determine a characteristic of the transition in the received optical signal energy based upon the disturbance.
-
公开(公告)号：US10164765B2
公开(公告)日：2018-12-25
申请号：US15892799
申请日：2018-02-09
Applicant: RAYTHEON COMPANY
Inventor： Benjamin P. Dolgin , Andrew Kowalevicz , Gary M. Graceffo
Abstract: Aspects are generally directed to optical receivers and methods for detecting a non-persistent communication superimposed on an overt communication channel. In one example, an optical receiver includes an optical resonator to receive an optical signal having one or more symbols encoded thereon at a modulated symbol repetition rate, the modulated symbol repetition rate being modulated relative to a nominal symbol repetition rate. The optical resonator is configured to emit an intensity-modulated output optical signal that has a variation in an intensity thereof corresponding to a symbol transition in the optical signal. The optical receiver further includes signal processing circuitry including a clock configured to generate a reference signal, a photodetector configured to generate a trigger signal, and a non-persistent communication decoder configured to determine a temporal misalignment between the symbol transition and the nominal symbol repetition rate based on the reference signal and the trigger signal.
-
公开(公告)号：US20180367223A1
公开(公告)日：2018-12-20
申请号：US16002680
申请日：2018-06-07
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo , Benjamin P. Dolgin , Andrew Kowalevicz
IPC: H04B10/85 , H04B10/112 , H04B10/07 , H04B10/54 , H04B10/556 , H04B10/67
Abstract: Aspects are generally directed to free-space transmitters, free-space receivers, and free-space communication methods. In one example, a free-space communication method includes acts of mapping a data payload to one or more symbols based on a symbol set defined by a digital modulation scheme, varying one or more properties of a signal waveform to phase modulate the signal waveform with the data payload, the one or more symbols each having a symbol duration that defines a timing structure of the modulated signal waveform, and fragmenting the timing structure of the modulated signal waveform to conceal one or more waveform properties of the modulated signal waveform.
-
公开(公告)号：US20180145765A1
公开(公告)日：2018-05-24
申请号：US15816529
申请日：2017-11-17
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Gary M. Graceffo , Benjamin P. Dolgin
CPC classification number: H04B10/615 , G02B17/004 , H04B10/54 , H04B10/676
Abstract: Aspects are generally directed to optical signal receivers and methods. In one example, a receiver includes a pump assembly configured to produce an encoded pump signal. The receiver includes an optical resonator positioned to receive an optical signal and the encoded pump signal, the optical resonator including an optical medium to accumulate resonant optical signal energy based on the optical signal, and the optical resonator being configured to emit output optical signal energy and disturb the output optical signal energy in response to a variation in the optical signal, the optical medium being further configured to modify a waveform shape of the output optical signal energy based on the encoded pump signal. The receiver further includes a detector to detect the output optical signal energy and determine a characteristic of the variation in the optical signal based on the waveform shape of the output optical signal energy.
-
Patent Agency Ranking
56.发明申请SYSTEM AND METHOD FOR DETERMING SOIL CHARACTERISTICS AND DRILLING INSTABILITY DURING HORIZONTAL DIRECTIONAL DRILLING 有权用于确定水平方向钻井过程中土壤特性和钻井不稳定性的系统和方法公开(公告)号：US20160108726A1
公开(公告)日：2016-04-21
申请号：US14921556
申请日：2015-10-23
Applicant: Raytheon Company
Inventor： Benjamin P. Dolgin , William G. Suliga , Thomas G Pepin , John T. Ishibashi , Michael A. Toreno , James A. Nalasco
CPC classification number: E21B49/003 , E21B7/046 , E21B7/06 , E21B7/062 , E21B44/00 , E21B47/024 , E21B47/09 , G01V11/002
Abstract: Disclosed is a system and method for horizontal directional drilling (HDD). The system and method utilize predictive algorithms to both characterize the soil within the borehole and to quantify instability within the drillstring. The soil characteristics are represented by a soil coefficient (α) which relates the curvature of the borehole with the length of thrust of the drill rig as well as by comparison of thrust while thrusting with torque while drilling. The value of (α) is obtained by comparison of the historical orientation of the drilling head over the length of the borehole and the borehole shape as determined by an arbitrary navigation sensor. Drillstring instability is determined as a function of historical thrust and torque efficiencies and windup over the length of the borehole.
Abstract translation: 公开了一种用于水平定向钻井（HDD）的系统和方法。 该系统和方法利用预测算法来表征井眼内的土壤并量化钻柱内的不稳定性。 土壤特征由土壤系数（α）表示，其将钻孔的曲率与钻机的推力长度相关联，以及通过在钻孔时用推力与推力进行比较。 （α）的值通过比较钻头长度与钻孔长度的历史取向和由任意导航传感器确定的钻孔形状来获得。 钻柱不稳定性被确定为历史推力和扭矩效率的函数，并且在钻孔的长度上卷起。
-
57.发明申请公开(公告)号：US20150207232A1
公开(公告)日：2015-07-23
申请号：US14598751
申请日：2015-01-16
Applicant: Raytheon Company
Inventor： Benjamin P. Dolgin
CPC classification number: H04B5/0093 , H01Q3/34 , H01Q7/06 , H01Q7/08 , H01Q21/245 , H04B1/0475 , H04B5/0081 , H04B5/0087
Abstract: A transmission antenna includes a closed-loop core having at least two electrically-conductive windings arranged on the closed-loop core. The windings are each electrically-actuated to generate a magnetic flux along the closed-loop core in opposing directions. The transmission antenna may generate a polarized magnetic field within a plane of the closed-loop core and provide broadband transmission of a polarized signal having a relatively flat frequency response. The transmission antenna is electrically-small, and the frequency of the polarized signal is nearly independent of the size of the closed-loop core. Multiple polarized signals may be provided, each being independently and continuously controlled through actuation of the windings. The direction of the polarized signal may also be varied. Additional windings for receiving a signal may simultaneously be employed on the closed-loop core. A method for transmitting a polarized signal with the transmission antenna is also provided.
Abstract translation: 发射天线包括具有布置在闭环芯上的至少两个导电绕组的闭环芯。 绕组各自被电致动以在相反的方向上沿着闭环芯产生磁通量。 发射天线可以在闭环核心的平面内产生极化磁场，并提供具有相对平坦的频率响应的偏振信号的宽带传输。 发射天线电气小，极化信号的频率几乎与闭环磁芯的大小无关。 可以提供多个极化信号，每个信号通过绕组的驱动被独立且连续地控制。 偏振信号的方向也可以变化。 用于接收信号的附加绕组可以同时用在闭环芯上。 还提供了一种用于与发送天线发送偏振信号的方法。
-
58.发明授权公开(公告)号：US11909444B2
公开(公告)日：2024-02-20
申请号：US17670119
申请日：2022-02-11
Applicant: RAYTHEON COMPANY
Inventor： James Talamonti , Andrew Kowalevicz , Gary M. Graceffo , Benjamin P. Dolgin
IPC: H04B10/2581 , H04B10/67 , H04B10/071
CPC classification number: H04B10/2581 , H04B10/071 , H04B10/67
Abstract: An optical signal receivers, systems including the optical signal receivers, and methods of operating the same include a multimode fiber circulator including a first port, a second port, and a third port, a first multimode fiber cable coupled to the first port and having an input configured to receive a complex modulated optical signal and provide the complex modulated optical signal to the first port of the multimode fiber circulator, a second multimode fiber cable including a low Q optical resonator coupled to the second port of the multimode fiber circulator that is configured to receive the complex modulated optical signal from the second port of the multimode circulator, and a third multimode fiber cable coupled to the third port of the multimode fiber circulator that is configured to receive a reflected optical signal from the third port of the multimode circulator, the reflected optical signal being reflected from the low Q optical resonator.
-
公开(公告)号：US11728901B2
公开(公告)日：2023-08-15
申请号：US17717763
申请日：2022-04-11
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo , Jae H. Kyung , Maurice J. Halmos
IPC: H04B10/69
CPC classification number: H04B10/6911
Abstract: Optical signal receivers, systems, and methods of operating the same include a non-line of sight optical signal receiver configured to receive and detect a complex modulated optical signal through a non-line of site propagation path from an optical transmitter, comprising an optical resonator configured to receive the complex modulated optical signal through the non-line of sight propagation path, and to convert the complex modulated optical signal to an intensity modulated signal, and a detector configured to convert the intensity modulated signal into an electrical signal, the electrical signal having an amplitude indicative of an intensity of the intensity modulated signal from the optical resonator, and to provide a detected signal.
-
公开(公告)号：US11681169B2
公开(公告)日：2023-06-20
申请号：US16913138
申请日：2020-06-26
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo , Andrew Kowalevicz , Benjamin P. Dolgin
IPC: G02F1/03
CPC classification number: G02F1/0344
Abstract: Aspects and examples are directed to programmable optical finite impulse response filters and optical infinite impulse response filters, which may be implemented as photonic integrated circuits.
-
-
-
-
-
-
-
-
-
Search Results
105
records
(took 0.024 seconds)
