利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

234 条记录 (耗时 0.026 秒)

    METHOD AND SYSTEM OF TIME-FREQUENCY SENSOR CODING FOR INTERFERENCE MITIGATION IN A VEHICLE
    1.
    发明公开
    METHOD AND SYSTEM OF TIME-FREQUENCY SENSOR CODING FOR INTERFERENCE MITIGATION IN A VEHICLE 审中-公开

    公开(公告)号：US20240201319A1

    公开(公告)日：2024-06-20

    申请号：US18084616

    申请日：2022-12-20

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Oren Longman ,  Gaston Solodky

    IPC分类号： G01S7/02 ,  G01S13/931 ,  H04B1/69 ,  H04L5/00

    CPC分类号： G01S7/023 ,  G01S13/931 ,  H04B1/69 ,  H04L5/0005 ,  H04L5/0048 ,  H04L5/0073 ,  H04B2001/6912

    摘要： A system and method for time-frequency coding for interference mitigation of sensors is presented that includes generating and transmitting, from a vehicle, a first chirp signal by a first sensor, in a first time-channel and in a first frequency-channel. The method may also include generating and transmitting, a second chirp signal by a second sensor, in a second time-channel and in the first frequency-channel and the receiving, by the first sensor, a first reflection signal from objects from the first chirp signal. In addition, there may be a receiving, by the second sensor, a second reflection signal from objects from the second chirp signal. In addition, the first time-channel is orthogonal to the second time-channel, and the transmitting of the second chirp signal is offset in time from the transmitting of the first chirp signal by an amount less than a duration of the first chirp signal.

    SECURITY ENHANCEMENT FOR MULTI-USER RANGING SYSTEMS USING SIGNATURE ORTHOGONAL CHIRPS
    4.
    发明公开
    SECURITY ENHANCEMENT FOR MULTI-USER RANGING SYSTEMS USING SIGNATURE ORTHOGONAL CHIRPS 审中-公开

    公开(公告)号：US20230375688A1

    公开(公告)日：2023-11-23

    申请号：US17748903

    申请日：2022-05-19

    申请人： Cypress Semiconductor Corporation

    发明人： Nozhan HOSSEINI ,  Pouria ZAND ,  Kiran ULN ,  Claudio REY ,  Kambiz SHOARINEJAD

    IPC分类号： G01S13/34 ,  G01S7/40 ,  H04B1/713

    CPC分类号： G01S13/343 ,  G01S7/4056 ,  H04B1/713 ,  H04B2001/6912

    摘要： Techniques described here introduce signature frequency modulation to unmodulated pulse signals as frequency chirps to enhance the security of multi-carrier phase-based ranging signals. The characteristics of the chirps may be mutually known by an initiator and a desired reflector of the ranging applications. The characteristics of the chirps may vary between the multi-carrier signals to thwart any attempt by an eavesdropper to predict the chirps. In one aspect, the characteristics of the chirps may be calculated for each timeslot of a ranging cycle by two authorized devices using a ciphering algorithm such as the Advanced Encryption Standard (AES) based on a shared security key. Each call of the AES may generate one or more pseudo-random numbers based on the shared security key and a time-varying initialization vector that increments every timeslot. Fields of the pseudo-random number may be extracted to determine the characteristics of the chirps associated with the timeslot.

    Systems and methods for communicating data over satellites
    5.
    发明授权
    Systems and methods for communicating data over satellites 有权

    公开(公告)号：US11791892B2

    公开(公告)日：2023-10-17

    申请号：US17894934

    申请日：2022-08-24

    申请人： Syed Karim

    发明人： Syed Karim

    IPC分类号： H04B7/185 ,  H04B1/69

    CPC分类号： H04B7/18526 ,  H04B1/69 ,  H04B7/18563 ,  H04B2001/6912

    摘要： Systems for communicating data through a satellite are disclosed. The systems generally include a radio designed for terrestrial communications that is configured to uplink data to one or more satellites. The one or more satellites are configured to receive the data from the terrestrial radio. In addition, the systems include terrestrial receivers, such as one or more chirp spread spectrum radios, positioned at ground level, which are configured to receive the data from the one or more satellites.

    RECEIVING SPREAD SPECTRUM SIGNALS
    9.
    发明申请
    RECEIVING SPREAD SPECTRUM SIGNALS 审中-公开

    公开(公告)号：US20180048502A1

    公开(公告)日：2018-02-15

    申请号：US15672371

    申请日：2017-08-09

    申请人： Airbus DS GmbH

    发明人： Jean-Jacques FLOCH ,  Francis SOUALLE

    IPC分类号： H04L27/227 ,  H04B1/707 ,  H04B1/692

    CPC分类号： H04L27/2278 ,  G01S19/01 ,  G01S19/30 ,  G06F17/15 ,  H04B1/692 ,  H04B1/707 ,  H04B2001/6904 ,  H04B2001/6908 ,  H04B2001/6912 ,  H04B2001/70706 ,  H04L27/2637

    摘要： A receiver for spread spectrum signals comprising a first part for preprocessing and digitizing a received signal, and a second part for tracking the digitized signal comprising a carrier loop and a code loop. The code loop comprises a generator for a reference receiver signal for correlation with the received signal and the code loop is configured to modify the reference signal to shape a correlation function between the received signal and the reference receiver signal. The first part is adapted to multiply the received spread spectrum signal with a first analog spectral offsetting signal provided for down-converting the received signal to an intermediate frequency and a sub-carrier frequency, selected from a set of sub-carrier frequencies, such that the received signal is down-converted and spectrally offset in the analog domain during a time interval covering at least one chip of a spreading code of the received signal.