JP4576515B2 - イベント検出装置 - Google Patents
イベント検出装置 Download PDFInfo
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- JP4576515B2 JP4576515B2 JP2007056462A JP2007056462A JP4576515B2 JP 4576515 B2 JP4576515 B2 JP 4576515B2 JP 2007056462 A JP2007056462 A JP 2007056462A JP 2007056462 A JP2007056462 A JP 2007056462A JP 4576515 B2 JP4576515 B2 JP 4576515B2
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- eigenvector
- event detection
- correlation matrix
- event
- antennas
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- 238000001514 detection method Methods 0.000 title claims description 26
- 239000011159 matrix material Substances 0.000 claims description 22
- 239000013598 vector Substances 0.000 claims description 18
- 238000011156 evaluation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- 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
- G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
-
- 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
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
-
- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/886—Radar or analogous systems specially adapted for specific applications for alarm systems
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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)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
Description
寺阪圭司、外3名、「UWB−IRによる屋内侵入者検知に関する検討」、電子情報通信学会論文誌B、2007年1月1日、第J90−B巻、第1号、p.97−100
x→(t)=a→(θ)s(t)+n→(t) (1)
ただし、a→(θ):アンテナ素子数をL個とするときのL次元ベクトル
s(t):基準点での受信信号
n→(t):雑音
ただし、θ:アンテナアレイ21の並びの方向に対する電波到来方向
d:アレイアンテナ21の各素子の間隔
λ:電波の波長
x→(t)=A→s→(t)+n→(t) (3)
ただし、A→:M個のベクトル(ステアリングベクトルという)を列としたL×M行列
s→(t):各到来波の複素振幅を要素としたM次元ベクトル
ただし、Tは転置を表す。
と表せる。
と表せる。ここで、spanはベクトルの線形結合からなるベクトルの集合である。お互いがコヒーレントである波が到来した場合はそのステアリングベクトルの線形結合が新しい1つのステアリングベクトルとなるので、上式の本質には影響しない。したがって、第一固有ベクトルはマルチパス環境の信号空間を表し、伝搬環境によって一意に決まる。そこで、固有ベクトル演算手段23は、相関行列R→xxから第1固有ベクトルv→1を算出する。
とする。ただし固有ベクトルの大きさはどちらも1に正規化しておく。
となる閾値Pthを適切に設定することによりイベント検出が可能となる。そこで、イベント検出手段24は、この式(14)の判断を行ってイベントを検出する。
20 受信機
21 アレイアンテナ
22 相関行列演算手段
23 固有ベクトル演算手段
24 イベント検出手段
Claims (4)
- 送信機が送信した電波を受信する複数のアンテナと、
該複数のアンテナによって受信した信号を受信ベクトルとして該受信ベクトルから相関行列を演算する相関行列演算手段と、
該相関行列演算手段によって演算された相関行列を固有値展開して信号部分空間を張る固有ベクトルを演算する固有ベクトル演算手段と、
該固有ベクトル演算手段によって演算された固有ベクトルの経時変化を検出してイベントを検出するイベント検出手段と
を備えることを特徴とするイベント検出装置。 - 前記複数のアンテナは、アレイアンテナであることを特徴とする請求項1記載のイベント検出装置。
- 前記固有ベクトル演算手段は、前記相関行列の最大固有値に対応する固有ベクトルを演算することを特徴とする請求項1又は2記載のイベント検出装置。
- 前記イベント検出手段は、平時の前記固有ベクトルと観測時の前記固有ベクトルとの内積を所定の閾値と比較することを特徴とする請求項1乃至3いずれかに記載のイベント検出装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007056462A JP4576515B2 (ja) | 2007-03-06 | 2007-03-06 | イベント検出装置 |
PCT/JP2008/053693 WO2008108310A1 (ja) | 2007-03-06 | 2008-02-29 | イベント検出装置 |
US12/449,964 US8441390B2 (en) | 2007-03-06 | 2008-02-29 | Event detecting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007056462A JP4576515B2 (ja) | 2007-03-06 | 2007-03-06 | イベント検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008216152A JP2008216152A (ja) | 2008-09-18 |
JP4576515B2 true JP4576515B2 (ja) | 2010-11-10 |
Family
ID=39738192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007056462A Active JP4576515B2 (ja) | 2007-03-06 | 2007-03-06 | イベント検出装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8441390B2 (ja) |
JP (1) | JP4576515B2 (ja) |
WO (1) | WO2008108310A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5406616B2 (ja) * | 2009-07-21 | 2014-02-05 | 学校法人慶應義塾 | イベント検出装置 |
JP5643554B2 (ja) * | 2010-07-06 | 2014-12-17 | 学校法人慶應義塾 | イベント検出装置 |
JP5768953B2 (ja) | 2010-08-02 | 2015-08-26 | 日本電気株式会社 | 通信衛星、較正システム、及びアレーアンテナの較正方法 |
JP5567974B2 (ja) * | 2010-10-13 | 2014-08-06 | 学校法人慶應義塾 | イベント検出装置 |
JP2012155603A (ja) * | 2011-01-27 | 2012-08-16 | Sumitomo Electric Ind Ltd | 侵入検知装置、侵入検知方法および侵入検知プログラム |
JP5978582B2 (ja) | 2011-09-28 | 2016-08-24 | 住友電気工業株式会社 | 車両用検知装置、異常検知方法および異常検知プログラム |
JP5829142B2 (ja) * | 2012-02-17 | 2015-12-09 | Kddi株式会社 | 電波センサ装置 |
JP6044147B2 (ja) * | 2012-07-19 | 2016-12-14 | 株式会社オートネットワーク技術研究所 | 車両用スマートエントリーシステム |
CN102830440A (zh) * | 2012-09-04 | 2012-12-19 | 宁波大学 | 一种室内人体探测方法 |
KR101564086B1 (ko) | 2013-09-09 | 2015-10-28 | 주식회사 에스원 | 다중 안테나를 이용한 침입 감지 시스템 및 방법 |
JP6256681B2 (ja) * | 2013-12-17 | 2018-01-10 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 校正装置、位置推定装置、校正方法、及び位置推定方法 |
CN106664265B (zh) * | 2014-07-17 | 2020-05-01 | 欧利景无线有限公司 | 无线定位系统 |
US10129853B2 (en) * | 2016-06-08 | 2018-11-13 | Cognitive Systems Corp. | Operating a motion detection channel in a wireless communication network |
JP6951276B2 (ja) * | 2018-03-12 | 2021-10-20 | 株式会社東芝 | 無線受信機、無線受信方法及び無線システム |
Citations (8)
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JP2004108851A (ja) * | 2002-09-17 | 2004-04-08 | Toshiba Corp | 測角装置及びこの測角装置を用いた通信装置 |
JP2004109006A (ja) * | 2002-09-19 | 2004-04-08 | Fuji Heavy Ind Ltd | 物体検出装置 |
JP2004138402A (ja) * | 2002-10-15 | 2004-05-13 | Mitsubishi Electric Corp | 侵入検知装置 |
WO2005050786A1 (fr) * | 2003-11-17 | 2005-06-02 | Jean-Marc Cortambert | Antenne cruciforme a sous-antennes lineaires et traitement associe |
JP2005195339A (ja) * | 2003-12-26 | 2005-07-21 | Toshiba Corp | レーダ信号処理装置 |
JP2006047282A (ja) * | 2004-07-06 | 2006-02-16 | Denso Corp | レーダ装置 |
JP2006190053A (ja) * | 2005-01-06 | 2006-07-20 | Masahiro Nishi | 屋内侵入検知システムおよび屋内侵入検知情報発信システム |
JP2008139077A (ja) * | 2006-11-30 | 2008-06-19 | Nippon Telegr & Teleph Corp <Ntt> | 侵入者検知システム、および、侵入者検知方法 |
Family Cites Families (6)
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US6658234B1 (en) * | 1995-06-02 | 2003-12-02 | Northrop Grumman Corporation | Method for extending the effective dynamic range of a radio receiver system |
JPH11133130A (ja) * | 1997-10-30 | 1999-05-21 | Koden Electron Co Ltd | 電波の到来方向の検出装置及びfmーcwレーダ |
JPH11344517A (ja) * | 1998-06-02 | 1999-12-14 | Nec Corp | 電波環境分析装置 |
DE60309748T2 (de) * | 2002-03-13 | 2007-10-04 | Raytheon Canada Ltd., Waterloo | System und Verfahren zur Rauschunterdrückung in vorverarbeiteten Radardaten |
JP4754856B2 (ja) * | 2005-03-31 | 2011-08-24 | 株式会社デンソーアイティーラボラトリ | 車載用レーダ装置 |
US7706478B2 (en) * | 2005-05-19 | 2010-04-27 | Signalspace, Inc. | Method and apparatus of source separation |
-
2007
- 2007-03-06 JP JP2007056462A patent/JP4576515B2/ja active Active
-
2008
- 2008-02-29 WO PCT/JP2008/053693 patent/WO2008108310A1/ja active Application Filing
- 2008-02-29 US US12/449,964 patent/US8441390B2/en active Active
Patent Citations (9)
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JP2004108851A (ja) * | 2002-09-17 | 2004-04-08 | Toshiba Corp | 測角装置及びこの測角装置を用いた通信装置 |
JP2004109006A (ja) * | 2002-09-19 | 2004-04-08 | Fuji Heavy Ind Ltd | 物体検出装置 |
JP2004138402A (ja) * | 2002-10-15 | 2004-05-13 | Mitsubishi Electric Corp | 侵入検知装置 |
WO2005050786A1 (fr) * | 2003-11-17 | 2005-06-02 | Jean-Marc Cortambert | Antenne cruciforme a sous-antennes lineaires et traitement associe |
JP2007515107A (ja) * | 2003-11-17 | 2007-06-07 | コルタンベール,ジャン−マルク | 線形サブアンテナによって構成される十字アンテナおよび一連の処理 |
JP2005195339A (ja) * | 2003-12-26 | 2005-07-21 | Toshiba Corp | レーダ信号処理装置 |
JP2006047282A (ja) * | 2004-07-06 | 2006-02-16 | Denso Corp | レーダ装置 |
JP2006190053A (ja) * | 2005-01-06 | 2006-07-20 | Masahiro Nishi | 屋内侵入検知システムおよび屋内侵入検知情報発信システム |
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WO2008108310A1 (ja) | 2008-09-12 |
JP2008216152A (ja) | 2008-09-18 |
US8441390B2 (en) | 2013-05-14 |
US20100164780A1 (en) | 2010-07-01 |
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