公开(公告)号：US20180091227A1

公开(公告)日：2018-03-29

申请号：US15717736

申请日：2017-09-27

Applicant: RAYTHEON COMPANY

Inventor： Benjamin P. Dolgin ,  Gary M. Graceffo ,  Andrew Kowalevicz

IPC: H04B10/61

CPC classification number: H04B10/616 ,  H04B10/11 ,  H04B10/5561 ,  H04B10/615

Abstract: Aspects are generally directed to receivers and methods for optically demodulating optical signals. In one example, a receiver includes an optical resonator to receive an optical signal, the optical resonator including an optical medium interposed between first and second semi-reflective surfaces, where the first and second semi-reflective surfaces are positioned to resonate optical signal energy, and the optical resonator is configured to disrupt the optical signal energy resonance responsive to a variation in the received optical signal. The receiver may further include a probe source positioned to provide an optical probe beam to the optical medium, the optical medium being configured to interrupt the optical probe beam during the optical signal energy resonance and to transmit at least a portion of the optical probe beam in response to the disruption of the optical signal energy resonance, and a detector to detect the transmitted portion of the optical probe beam.

公开(公告)号：US09900031B2

公开(公告)日：2018-02-20

申请号：US15155490

申请日：2016-05-16

Applicant: Raytheon Company

Inventor： Andrew Kowalevicz ,  Tom Borton ,  Michael C. Reese ,  Gary M. Graceffo

IPC: H04L9/08 ,  H04B1/04 ,  H04L9/16 ,  H04L7/06 ,  H04L7/04 ,  H04L25/49 ,  H04L12/26 ,  G09C1/00

CPC classification number: G06F1/12 ,  G09C1/00 ,  H04B1/0475 ,  H04L7/042 ,  H04L7/065 ,  H04L9/08 ,  H04L9/16 ,  H04L25/4902 ,  H04L43/0864 ,  H04L43/087

Abstract: A method for carrying data on a live host signal, comprising the steps of: varying timing in a host signal in response to data to be encoded, wherein variations in timing are smaller than a sampling period for detection and capture of the digital signal receiving the live host signal; sensing pulse timing variations in the received live host signal by comparison to a reference signal; and determining information in the sensed timing variations.

公开(公告)号：US20170317712A1

公开(公告)日：2017-11-02

申请号：US15496375

申请日：2017-04-25

Applicant: Raytheon Company

Inventor： Gary M. Graceffo ,  Andrew Kowalevicz

IPC: H04B1/707 ,  H04L9/00 ,  H04B1/713

CPC classification number: H04B1/707 ,  H04B1/713 ,  H04J13/0018 ,  H04L9/001

Abstract: A system, method, and computer program product for chaotically generating a pseudorandom number sequence, such as for use in spread spectrum communications systems and in cryptographic systems. Chaotically generated pseudorandom numbers are not cyclostationary in nature, so output values encoded via such non-cyclostationary bases have no clear correlations. Spread signal communications systems using chaotically generated spreading codes thus operate without rate line artifacts, increasing their resistance to signal detection and to determinations of underlying signal chip rates and signal symbol rates. Broadcasts and guided transmissions (including either conductive wire or optical transmission media), in both radio frequency and optical systems are supported. Common spread spectrum communications systems including DSSS and FHSS may be strengthened through the use of chaotically generated spreading codes. Similarly, keys and nonces generated for cryptographic systems may be improved over those based on conventionally generated pseudorandom numbers.

公开(公告)号：US20170150348A1

公开(公告)日：2017-05-25

申请号：US14950575

申请日：2015-11-24

Applicant: Raytheon Company

Inventor： Andrew Kowalevicz ,  Gary M. Graceffo

IPC: H04W12/04 ,  H04L9/08

CPC classification number: H04L9/0869 ,  H04L9/0816 ,  H04L9/3273 ,  H04L27/2075 ,  H04L27/345 ,  H04L2209/24 ,  H04L2209/80 ,  H04W12/02

Abstract: Communication devices and a method of providing secure electronic content are general described. A plainmodulation containing user content is encrypted using a modulation key to form a ciphermodulation having a different magnitude and/or phase than the plainmodulation. Symbol representations of the plainmodulation and ciphermodulation in a QAM constellation are different. The ciphermodulation symbol representation is in a location non-coincident with an expected QAM constellation symbol. The symbol location of different plainmodulations when encypted using different modulation keys may be the same such that the corresponding ciphermodulation symbol representations are co-located. Different modulation keys are used for different plainmodulations, with a modulation key change occurring after transmission of a predetermined number of ciphermodulations and/or time. The modulation key and/or change is transmitted to enable coherent demodulation of the ciphermodulation to be performed. Multiple plainmodulations may be encrypted into a single ciphermodulation and/or a single plainmodulation may be encypted across multiple ciphermodulations.

公开(公告)号：US20170150347A1

公开(公告)日：2017-05-25

申请号：US14950552

申请日：2015-11-24

Applicant: Raytheon Company

Inventor： Andrew Kowalevicz ,  Gary M. Graceffo

IPC: H04W12/02 ,  H04W12/08 ,  H04W12/04 ,  H04W80/06

CPC classification number: H04W12/02 ,  H04L9/0643 ,  H04L9/065 ,  H04L9/0891 ,  H04L2209/80 ,  H04W4/80 ,  H04W80/06

Abstract: Communication devices and a method of providing secure electronic content are general described. Content is encrypted using a time-invariant encryption algorithm on the binary bits and a time-varying baseband key encryption waveform with a time-varying phase or amplitude. The content is recovered using a waveform with a reference phase mixed with a reference LO signal or combining the waveform and content using an XOR to measure a change of the phase/amplitude of the received signal relative to the LO signal. The key for the time-invariant binary bit level encryption may be communicated on a different channel than the content prior to communication of the content or concurrently with the content. The phase/amplitude of the baseband key may vary after baseband waveform encryption of a predetermined number of symbols, independent of the time, or after a predetermined time independent of an amount of baseband signal encrypted.

公开(公告)号：US09535245B1

公开(公告)日：2017-01-03

申请号：US13714812

申请日：2012-12-14

Applicant: RAYTHEON COMPANY

Inventor： Andrew Kowalevicz

IPC: G02B26/00 ,  H04B10/00 ,  H01L27/00 ,  G02B26/08 ,  H01L27/146

CPC classification number: G06K9/2036 ,  G01J1/44 ,  G01J2001/444 ,  G02B5/12 ,  G02B26/0841 ,  G02B27/1066 ,  G02B27/108 ,  G06K9/34 ,  H01L27/14643

Abstract: In one example a method of deceiving an optical augmentation device includes receiving an interrogation beam at an optical system from the optical augmentation device, encoding the interrogation beam with a false signature mis-identifying the optical system, and retro-reflecting the encoded interrogation beam to the optical augmentation device, without retro-reflecting the original interrogation beam.

Abstract translation: 在一个示例中，欺骗光学增强设备的方法包括：从光学增强设备在光学系统处接收询问光束，用询问错误识别光学系统的错误识别编码询问光束，并将编码的询问光束反向 光学增强装置，而不反光原来的询问光束。

公开(公告)号：US09525574B1

公开(公告)日：2016-12-20

申请号：US14853067

申请日：2015-09-14

Applicant: Raytheon Company

Inventor： Gary M. Graceffo ,  Andrew Kowalevicz

IPC: H04B1/69 ,  H04B1/707 ,  H04B1/713 ,  H04L25/493 ,  H04B1/04

CPC classification number: H04L25/493 ,  H04B1/0003 ,  H04B1/0475

Abstract: Methods and apparatus for transmitting data at a varying effective data rate (EDR) at a constant baud rate by encoding the data prior to transmission with a sequence. In embodiments, the sequence comprises a pseudo random number sequence, Barker sequence, and/or other sequence. Embodiments of a receiver decode the data transmitted at a varying effective data rate (EDR) at a constant baud rate by encoding the data prior to transmission with a sequence.

Abstract translation: 用于以恒定波特率以变化的有效数据速率（EDR）发送数据的方法和装置，通过在用序列传输之前对数据进行编码。 在实施方案中，序列包含伪随机数序列，巴克序列和/或其他序列。 接收机的实施例通过在用序列传输之前对数据进行编码，以恒定的波特率来解码以变化的有效数据速率（EDR）发送的数据。

公开(公告)号：US20140166854A1

公开(公告)日：2014-06-19

申请号：US13714637

申请日：2012-12-14

Applicant: RAYTHEON COMPANY

Inventor： Andrew Kowalevicz ,  Frank Allen Birdsong, JR.

IPC: G01J1/42

CPC classification number: G01S3/784 ,  F41G3/14 ,  G01S5/16 ,  G01S7/4804 ,  G02B5/128 ,  H04N5/00

Abstract: Methods and apparatus for covert detection of an interrogating device. In one example a method includes receiving an interrogation beam at an optical system, imaging a scene including a source of the interrogation beam without retro-reflecting the interrogation beam to produce an image, and analyzing the image to determine an approximate location of the source within the scene. In some examples, a threat detection sensor is used to further analyze the interrogation beam to determine information about the interrogating device.

Abstract translation: 用于秘密检测询问装置的方法和装置。 在一个示例中，一种方法包括在光学系统处接收询问光束，对包括询问光源的场景进行成像，而不回复询问光束以产生图像，并且分析图像以确定源的近似位置 现场。 在一些示例中，使用威胁检测传感器来进一步分析询问光束以确定关于询问设备的信息。

公开(公告)号：US20140139630A1

公开(公告)日：2014-05-22

申请号：US13680950

申请日：2012-11-19

Applicant: RAYTHEON COMPANY

Inventor： Andrew Kowalevicz

IPC: H04N13/02

CPC classification number: G03B17/00 ,  G02B27/0905 ,  G02B27/0961

Abstract: A non-retro-reflective imaging system and methods in which a relay optic is configured to segment a source image into a plurality of slices and reimage each of the slices individually onto a rotated image plane such that a substantially in-focus reconstruction of the entire image is obtained, while substantially eliminating retro-reflection from the system. According to one example a non-retro-reflective imaging system includes a segmented relay optic configured to reimage a source image onto an image plane tilted with respect to an optical axis of the system, and further configured to slice the image volume into a plurality of image slices and spatially position the plurality of image slices such that a depth of focus of each image slice overlaps the tilted image plane. The system further includes an image sensor co-aligned with the tilted image plane and configured to produce a reconstructed image from the plurality of image slices.

Abstract translation: 一种非逆反射成像系统和方法，其中中继光学器件被配置为将源图像分割成多个切片并且将每个切片重新图像到旋转的图像平面上，使得基本上在整个 获得图像，同时基本上消除了系统的反射。 根据一个示例，非回归反射成像系统包括分段继电器光学器件，其被配置为将源图像重新图像到相对于系统的光轴倾斜的图像平面上，并且还被配置为将图像体积切成多个 图像切片并且空间地定位多个图像切片，使得每个图像切片的焦深与倾斜的图像平面重叠。 该系统还包括与倾斜图像平面对齐并被配置为从多个图像切片产生重建图像的图像传感器。

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.