JP6923944B2 - Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法 - Google Patents

Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法 Download PDF

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JP6923944B2
JP6923944B2 JP2018532051A JP2018532051A JP6923944B2 JP 6923944 B2 JP6923944 B2 JP 6923944B2 JP 2018532051 A JP2018532051 A JP 2018532051A JP 2018532051 A JP2018532051 A JP 2018532051A JP 6923944 B2 JP6923944 B2 JP 6923944B2
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signal
frequency
sample
determining
chirp signal
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JP2018538539A5 (https=
JP2018538539A (ja
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プラサッド エスワラン アンジャン
プラサッド エスワラン アンジャン
ラム ナラナモーティ シャンカール
ラム ナラナモーティ シャンカール
サマラ ストリーキラン
サマラ ストリーキラン
サブライ カーティック
サブライ カーティック
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テキサス インスツルメンツ インコーポレイテッド
テキサス インスツルメンツ インコーポレイテッド
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G01S13/343—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using sawtooth modulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35—Details of non-pulse systems
    • G01S7/352—Receivers
    • G01S7/358—Receivers using I/Q processing

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
JP2018532051A 2015-12-18 2016-12-19 Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法 Active JP6923944B2 (ja)

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JP2021120275A JP7235386B2 (ja) 2015-12-18 2021-07-21 Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14/975,416 US10746851B2 (en) 2015-12-18 2015-12-18 Circuits and methods for determining chirp signal linearity and phase noise of a FMCW radar
US14/975,416 2015-12-18
PCT/US2016/067478 WO2017106823A1 (en) 2015-12-18 2016-12-19 Circuits and methods for determining chirp signal linearity and phase noise of a fmcw radar

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JP2021120275A Division JP7235386B2 (ja) 2015-12-18 2021-07-21 Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法

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JP2018538539A JP2018538539A (ja) 2018-12-27
JP2018538539A5 JP2018538539A5 (https=) 2020-02-06
JP6923944B2 true JP6923944B2 (ja) 2021-08-25

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JP2021120275A Active JP7235386B2 (ja) 2015-12-18 2021-07-21 Ｆｍｃｗレーダーのチャープ信号線形性及び位相ノイズを判定するための回路及び方法

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Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10181653B2 (en) 2016-07-21 2019-01-15 Infineon Technologies Ag Radio frequency system for wearable device
US10218407B2 (en) 2016-08-08 2019-02-26 Infineon Technologies Ag Radio frequency system and method for wearable device
US10466772B2 (en) 2017-01-09 2019-11-05 Infineon Technologies Ag System and method of gesture detection for a remote device
US10505255B2 (en) 2017-01-30 2019-12-10 Infineon Technologies Ag Radio frequency device packages and methods of formation thereof
US10602548B2 (en) 2017-06-22 2020-03-24 Infineon Technologies Ag System and method for gesture sensing
US10305701B2 (en) * 2017-07-17 2019-05-28 The Boeing Company Phase-modulated signal parameter estimation using streaming calculations
US10746625B2 (en) 2017-12-22 2020-08-18 Infineon Technologies Ag System and method of monitoring a structural object using a millimeter-wave radar sensor
US11346936B2 (en) 2018-01-16 2022-05-31 Infineon Technologies Ag System and method for vital signal sensing using a millimeter-wave radar sensor
US11278241B2 (en) 2018-01-16 2022-03-22 Infineon Technologies Ag System and method for vital signal sensing using a millimeter-wave radar sensor
US10795012B2 (en) 2018-01-22 2020-10-06 Infineon Technologies Ag System and method for human behavior modelling and power control using a millimeter-wave radar sensor
DE102018108219B3 (de) * 2018-01-29 2019-06-19 Infineon Technologies Ag Spektrale Schätzung von Rauschen in Radarvorrichtungen
US10576328B2 (en) 2018-02-06 2020-03-03 Infineon Technologies Ag System and method for contactless sensing on a treadmill
US10705198B2 (en) 2018-03-27 2020-07-07 Infineon Technologies Ag System and method of monitoring an air flow using a millimeter-wave radar sensor
US10761187B2 (en) 2018-04-11 2020-09-01 Infineon Technologies Ag Liquid detection using millimeter-wave radar sensor
US10775482B2 (en) 2018-04-11 2020-09-15 Infineon Technologies Ag Human detection and identification in a setting using millimeter-wave radar
US10794841B2 (en) 2018-05-07 2020-10-06 Infineon Technologies Ag Composite material structure monitoring system
US10399393B1 (en) 2018-05-29 2019-09-03 Infineon Technologies Ag Radar sensor system for tire monitoring
US10903567B2 (en) 2018-06-04 2021-01-26 Infineon Technologies Ag Calibrating a phased array system
US11416077B2 (en) 2018-07-19 2022-08-16 Infineon Technologies Ag Gesture detection system and method using a radar sensor
US10928501B2 (en) 2018-08-28 2021-02-23 Infineon Technologies Ag Target detection in rainfall and snowfall conditions using mmWave radar
US11183772B2 (en) 2018-09-13 2021-11-23 Infineon Technologies Ag Embedded downlight and radar system
US11125869B2 (en) 2018-10-16 2021-09-21 Infineon Technologies Ag Estimating angle of human target using mmWave radar
US11397239B2 (en) 2018-10-24 2022-07-26 Infineon Technologies Ag Radar sensor FSM low power mode
US11360185B2 (en) 2018-10-24 2022-06-14 Infineon Technologies Ag Phase coded FMCW radar
CN109490857B (zh) * 2018-10-29 2023-01-06 北京遥感设备研究所 一种雷达设备lfm脉冲信号调频非线性度确定方法及系统
EP3654053A1 (en) 2018-11-14 2020-05-20 Infineon Technologies AG Package with acoustic sensing device(s) and millimeter wave sensing elements
US11087115B2 (en) 2019-01-22 2021-08-10 Infineon Technologies Ag User authentication using mm-Wave sensor for automotive radar systems
US11355838B2 (en) 2019-03-18 2022-06-07 Infineon Technologies Ag Integration of EBG structures (single layer/multi-layer) for isolation enhancement in multilayer embedded packaging technology at mmWave
CN113557443B (zh) * 2019-03-18 2025-03-04 瑞典爱立信有限公司 用于lte许可辅助接入动态频率选择的长脉冲雷达啁啾检测器的系统和方法
US11126885B2 (en) 2019-03-21 2021-09-21 Infineon Technologies Ag Character recognition in air-writing based on network of radars
US11454696B2 (en) 2019-04-05 2022-09-27 Infineon Technologies Ag FMCW radar integration with communication system
US11327167B2 (en) 2019-09-13 2022-05-10 Infineon Technologies Ag Human target tracking system and method
US11774592B2 (en) 2019-09-18 2023-10-03 Infineon Technologies Ag Multimode communication and radar system resource allocation
US11709244B2 (en) * 2019-10-21 2023-07-25 Banner Engineering Corp. Near range radar
US11435443B2 (en) 2019-10-22 2022-09-06 Infineon Technologies Ag Integration of tracking with classifier in mmwave radar
US11808883B2 (en) 2020-01-31 2023-11-07 Infineon Technologies Ag Synchronization of multiple mmWave devices
US11614516B2 (en) 2020-02-19 2023-03-28 Infineon Technologies Ag Radar vital signal tracking using a Kalman filter
CN113541727B (zh) * 2020-03-31 2023-04-28 华为云计算技术有限公司 毫米波雷达通信方法、装置及可读存储介质
US11650318B2 (en) 2020-04-06 2023-05-16 Gm Cruise Holdings Llc Characterizing linearity of an optical frequency chirp output by an FMCW laser
US11585891B2 (en) 2020-04-20 2023-02-21 Infineon Technologies Ag Radar-based vital sign estimation
US11567185B2 (en) 2020-05-05 2023-01-31 Infineon Technologies Ag Radar-based target tracking using motion detection
US11774553B2 (en) 2020-06-18 2023-10-03 Infineon Technologies Ag Parametric CNN for radar processing
US11704917B2 (en) 2020-07-09 2023-07-18 Infineon Technologies Ag Multi-sensor analysis of food
CN112098955B (zh) * 2020-08-14 2024-04-12 西安电子科技大学 基于线性调频信号逼近期望功率谱的发射波形优化方法
US11614511B2 (en) 2020-09-17 2023-03-28 Infineon Technologies Ag Radar interference mitigation
US11709247B2 (en) * 2020-09-22 2023-07-25 Ay Dee Kay Llc Fast chirp synthesis via segmented frequency shifting
US11719787B2 (en) 2020-10-30 2023-08-08 Infineon Technologies Ag Radar-based target set generation
US11719805B2 (en) 2020-11-18 2023-08-08 Infineon Technologies Ag Radar based tracker using empirical mode decomposition (EMD) and invariant feature transform (IFT)
US12189021B2 (en) 2021-02-18 2025-01-07 Infineon Technologies Ag Radar-based target tracker
US11662430B2 (en) 2021-03-17 2023-05-30 Infineon Technologies Ag MmWave radar testing
US11950895B2 (en) 2021-05-28 2024-04-09 Infineon Technologies Ag Radar sensor system for blood pressure sensing, and associated method
US12307761B2 (en) 2021-08-06 2025-05-20 Infineon Technologies Ag Scene-adaptive radar
US12405351B2 (en) 2022-03-25 2025-09-02 Infineon Technologies Ag Adaptive Tx-Rx crosstalk cancellation for radar systems
US12399254B2 (en) 2022-06-07 2025-08-26 Infineon Technologies Ag Radar-based single target vital sensing
US12399271B2 (en) 2022-07-20 2025-08-26 Infineon Technologies Ag Radar-based target tracker
US12254670B2 (en) 2022-07-29 2025-03-18 Infineon Technologies Ag Radar-based activity classification
US12504526B2 (en) 2022-09-21 2025-12-23 Infineon Technologies Ag Radar-based segmented presence detection

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104792A1 (de) 1991-02-16 1992-08-20 Bosch Gmbh Robert Fmcw-radarsystem mit linearer frequenzmodulation
US5376938A (en) 1994-04-04 1994-12-27 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for maintaining linearity and frequency accuracy of an FM chirp waveform
US5964132A (en) 1996-06-24 1999-10-12 Icc Innovative Concepts Corp. Multi-function utility tool
US6091356A (en) * 1998-10-05 2000-07-18 Sensor Concepts Incorporated Chirp source with rolling frequency lock for generating linear frequency chirps
JP2003507716A (ja) * 1999-08-12 2003-02-25 オートモーティブ システムズ ラボラトリー インコーポレーテッド ニューラルネットワークレーダプロセッサ
US6922555B1 (en) * 1999-09-02 2005-07-26 Koninklijke Philips Electronics N.V. Phase interpolation receiver for angle modulated RF signals
US7061998B1 (en) * 2002-02-05 2006-06-13 Itt Manufacturing Enterprises, Inc. Methods and apparatus for downconverting signals from intermediate frequency to baseband
JP3903814B2 (ja) * 2002-03-08 2007-04-11 三菱電機株式会社 電波監視装置
US6624780B1 (en) * 2002-10-02 2003-09-23 The United States Of America As Represented By The Secretary Of The Navy False target radar image generator for countering wideband imaging radars
US20040150548A1 (en) * 2003-02-03 2004-08-05 Walmsley Prescott A. Linear frequency modulation superimposed on double sideband diplex radar
JP3944130B2 (ja) * 2003-07-08 2007-07-11 三菱電機株式会社 移動体のレ−ダ方式、レ−ダ装置、レーダ信号処理方法、及びレーダ信号処理装置
JP4241451B2 (ja) * 2004-03-17 2009-03-18 三菱電機株式会社 レーダ試験方法
US7317309B2 (en) * 2004-06-07 2008-01-08 Advantest Corporation Wideband signal analyzing apparatus, wideband period jitter analyzing apparatus, and wideband skew analyzing apparatus
US7154346B2 (en) * 2004-07-30 2006-12-26 Broadcom Corporation Apparatus and method to provide a local oscillator signal
US7535976B2 (en) * 2004-07-30 2009-05-19 Broadcom Corporation Apparatus and method for integration of tuner functions in a digital receiver
GB0421520D0 (en) 2004-09-28 2004-10-27 Qinetiq Ltd Frequency modulated continuous wave (FMCW) radar having improved frquency sweep linearity
US7345744B2 (en) * 2005-06-06 2008-03-18 Raytheon Company Optical delay line to correct phase errors in coherent ladar
DE102006031351A1 (de) 2006-07-06 2008-01-17 Infineon Technologies Ag Vorrichtung und Verfahren zum Messen einer Phasenabweichung
WO2008072481A1 (ja) * 2006-12-11 2008-06-19 Murata Manufacturing Co., Ltd. レーダ装置
EP2184857A4 (en) * 2007-08-28 2013-10-16 Fujitsu Ltd PHASE LOCKED OSCILLATOR AND RADAR EQUIPMENT THEREWITH
JP2010237172A (ja) * 2009-03-31 2010-10-21 Toshiba Corp Ｆｍｃｗ信号生成回路
CN102770781B (zh) * 2010-03-09 2014-08-27 古河电气工业株式会社 脉冲雷达装置及其控制方法
JP5178761B2 (ja) * 2010-03-19 2013-04-10 株式会社東芝 Ｆｍｃｗ信号生成回路及びレーダー装置
EP2630693A4 (en) * 2010-10-20 2015-07-29 Aviat Networks Inc SYSTEMS AND METHODS FOR ENHANCING ENERGY EFFICIENCY AND LINEARIZATION OF RADIO FREQUENCY TRANSMITTERS
US8686736B2 (en) * 2010-11-23 2014-04-01 Infineon Technologies Ag System and method for testing a radio frequency integrated circuit
CN201965232U (zh) * 2010-12-20 2011-09-07 河北珠峰仪器仪表设备有限公司 一种高扫频线性度的调频连续波雷达测距电路
JP5566974B2 (ja) * 2011-08-29 2014-08-06 株式会社東芝 信号生成回路、発振装置、レーダー装置
JP2013221756A (ja) * 2012-04-12 2013-10-28 Furuno Electric Co Ltd レーダ装置、及びレーダ送受信方法
US8687736B1 (en) * 2012-12-09 2014-04-01 Phuong Huynh Multi-band bandpass-sampling receiver
DE102013207464B4 (de) 2013-04-24 2023-07-13 Rohde & Schwarz Gmbh & Co. Kg Messverfahren und Messgerät zur Vermessung von breitbandigen Messsignalen
EP3044870B1 (en) * 2013-09-12 2019-05-15 Vayyar Imaging Ltd. Apparatus and methods for signal generation, reception, and self-calibration
JP6407555B2 (ja) * 2014-04-24 2018-10-17 浜松ホトニクス株式会社 画像生成装置及び画像生成方法
DE102015112392B3 (de) * 2015-07-29 2016-11-17 Infineon Technologies Ag Verfahren und Vorrichtung zum Kalibrieren eines IQ-Modulators
CN109239708A (zh) * 2018-09-19 2019-01-18 天津大学 一种实现生命体征探测和短距离定位的双频电路结构

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JP7235386B2 (ja) 2023-03-08
JP2018538539A (ja) 2018-12-27
US10746851B2 (en) 2020-08-18
EP3391078A1 (en) 2018-10-24
CN108351405A (zh) 2018-07-31
CN108351405B (zh) 2023-08-08
WO2017106823A1 (en) 2017-06-22
JP2021175980A (ja) 2021-11-04
EP3391078A4 (en) 2019-08-21
US20170176574A1 (en) 2017-06-22
EP3391078B1 (en) 2024-11-06

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