JP2020191636A - 強磁性体および巻線を備えるeloran受信機およびアンテナ、ならびに関連方法 - Google Patents
強磁性体および巻線を備えるeloran受信機およびアンテナ、ならびに関連方法 Download PDFInfo
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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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
- G01S1/24—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations, e.g. LORAN systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/001—Crossed polarisation dual antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/36—Vertical arrangement of element with top loading
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
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- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Aviation & Aerospace Engineering (AREA)
- Astronomy & Astrophysics (AREA)
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Abstract
Description
1)電界アンテナの振幅
2)電界アンテナの位相
3)磁界xアンテナの振幅
4)磁界xアンテナの位相
5)磁界yアンテナの振幅
6)磁界yアンテナの位相
である。
b)電界アンテナの振幅を磁界xおよび磁界yチャンネルの振幅に加算することにより、到来角の曖昧さ(a)を除去すること;
c)磁界アンテナ振幅に相対的な電界振幅の増大により、近隣の橋への近接性および方向を示すこと;
d)電界振幅に相対的な磁界振幅の増大により、近隣の建物またはタワーへの近接性および方向を示すこと;
e)電界アンテナ振幅と磁界xおよび磁界yのアンテナ振幅との差に基づく補償係数を適用することにより、タイミングおよび指示位置の誤差を補正すること;ならびに
f)電界アンテナ位相と磁界xおよび磁界yのアンテナ位相との差に基づく補償係数を適用することにより、タイミングおよび指示位置の誤差を補正すること。
Claims (20)
- 増強長距離ナビゲーション(eLORAN)受信機であって、
アンテナと、それに連結されたeLORAN受信機回路とを備え、前記アンテナは、
強磁性中間部分およびそこから外向きに延びる複数の強磁性アームを備える強磁性コアと、
前記複数の強磁性アームの各々を取り囲む個別導電性巻線と、
前記強磁性コアに隣接する導電性パッチ素子とを備える、eLORAN受信機。 - 前記強磁性コアおよび個別導電性巻線は、複数の磁界信号に応答するように構成され、前記導電性パッチ素子は、電界信号に応答するように構成されている、請求項1に記載のeLORAN受信機。
- 前記eLORAN受信機回路は、前記複数の磁界信号と前記電界信号とに基づいて位置を補正するように構成されている、請求項2に記載のeLORAN受信機。
- 前記eLORAN受信機回路は、電界対磁界振幅比、電界対磁界位相差、および電界対磁界パルス到着時間差を計算するように構成され、前記eLORAN受信機回路は、前記電界対磁界振幅比、前記電界対磁界位相差、および前記電界対磁界パルス到着時間差に基づいて前記位置を補正するように構成されている、請求項3に記載のeLORAN受信機。
- 前記アンテナは、前記導電性パッチ素子とは反対側に導電性接地面を備える、請求項1に記載のeLORAN受信機。
- 前記複数の強磁性アームは、整列対に配置されている、請求項1に記載のeLORAN受信機。
- 前記アンテナは、前記個別導電性巻線および前記導電性パッチ素子に連結された少なくとも1つの給電点を備える、請求項1に記載のeLORAN受信機。
- 前記導電性パッチ素子は、ディスク形状である、請求項1に記載のeLORAN受信機。
- 前記複数の強磁性アームは、十字形状を画定する、請求項1に記載のeLORAN受信機。
- 前記強磁性コアは、フェライト、粉末鉄、電炉鋼、およびナノ結晶鉄のうちの少なくとも1つを含む、請求項1に記載のeLORAN受信機。
- 増強長距離ナビゲーション(eLORAN)受信機回路に連結されるアンテナであって、
強磁性中間部分およびそこから外向きに延びる複数の強磁性アームを備える強磁性コアと、
前記複数の強磁性アームの各々を取り囲む個別導電性巻線と、
前記強磁性コアに隣接する導電性パッチ素子とを備える、アンテナ。 - 前記強磁性コアおよび個別導電性巻線は、複数の磁界信号に応答するように構成され、前記導電性パッチ素子は、電界信号に応答するように構成されている請求項11に記載のアンテナ。
- 前記eLORAN受信機回路は、前記複数の磁界信号と前記電界信号とに基づいて位置を補正するように構成されている、請求項12に記載のアンテナ。
- 前記eLORAN受信機回路は、電界対磁界振幅比、電界対磁界位相差、および電界対磁界パルス到着時間差を計算するように構成され、前記eLORAN受信機回路は、前記電界対磁界振幅比、前記電界対磁界位相差、および前記電界対磁界パルス到着時間差に基づいて前記位置を補正するように構成されている、請求項13に記載のアンテナ。
- 前記導電性パッチ素子とは反対側に導電性接地面をさらに備える、請求項11に記載のアンテナ。
- 前記複数の強磁性アームは、整列対に配置されている、請求項11に記載のアンテナ。
- 前記個別導電性巻線および前記導電性パッチ素子に連結された少なくとも1つの給電点をさらに備える、請求項11に記載のアンテナ。
- 増強長距離ナビゲーション(eLORAN)受信機回路に連結されるアンテナを作製する方法であって、
強磁性中間部分およびそこから外向きに延びる複数の強磁性アームを備える強磁性コアを形成することと、
前記複数の強磁性アームの各々を取り囲む個別導電性巻線を配置することと、
導電性パッチ素子を前記強磁性コアに隣接して配置することと、を含む方法。 - 前記強磁性コアおよび個別導電性巻線は、複数の磁界信号に応答するように構成され、前記導電性パッチ素子は、電界信号に応答するように構成されている、請求項18に記載の方法。
- 前記eLORAN受信機回路は、前記複数の磁界信号と前記電界信号とに基づいて位置を補正するように構成されている、請求項19に記載の方法。
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US16/419,568 US11600926B2 (en) | 2019-05-22 | 2019-05-22 | eLORAN receiver and antenna with ferromagnetic body and windings and related methods |
US16/419,568 | 2019-05-22 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003092509A (ja) * | 2001-07-13 | 2003-03-28 | Sumida Corporation | アンテナコイル |
US20100103025A1 (en) * | 2002-08-19 | 2010-04-29 | Q-Track Corporation | Near Field Electromagnetic Calibration System |
US20170160370A1 (en) * | 2015-12-02 | 2017-06-08 | Honeywell International Inc. | Low frequency/medium frequency (lf/mf) multi mode antenna/receiver |
JP2019062372A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社Soken | 複合アンテナ装置 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3947849A (en) | 1974-06-20 | 1976-03-30 | The Johns Hopkins University | Loran receiver-navigator |
US4024382A (en) | 1975-09-08 | 1977-05-17 | The Laitram Corporation | Loran compensated magnetic compass |
US4166275A (en) | 1977-08-18 | 1979-08-28 | Digital Marine Electronics Corporation | Loran receiver system |
US4134117A (en) | 1977-10-19 | 1979-01-09 | Texas Instruments Incorporated | Loran C receiver |
US4195299A (en) | 1978-03-02 | 1980-03-25 | International Telephone And Telegraph Corporation | Loran-C system monitor circuit |
US4300139A (en) | 1978-08-28 | 1981-11-10 | Sanders Associates, Inc. | Loran-C navigation apparatus |
US4268830A (en) | 1978-08-28 | 1981-05-19 | Sanders Associates, Inc. | Self calibration of a LORAN-C navigation receiver |
US4325067A (en) | 1978-08-28 | 1982-04-13 | Sanders Associates, Inc. | Method and apparatus for removing noise in a LORAN-C navigation receiver |
USRE31254E (en) | 1978-08-28 | 1983-05-24 | Sanders Associates, Inc. | Self calibration of a LORAN-C navigation receiver |
US4743912A (en) | 1985-06-24 | 1988-05-10 | Megapulse Inc. | Method of and apparatus for reducing cycle slippage errors in Loran-C and similar radio-frequency signal reception, particularly in vehicles undergoing acceleration |
US4804964A (en) | 1985-08-09 | 1989-02-14 | Nissan Motor Company, Limited | Loran-C signal receiving apparatus |
US4999638A (en) | 1990-03-06 | 1991-03-12 | Locus, Inc. | Apparatus and method for synchronizing the signal averaging clock of a Loran C. receiver to the clock of a Loran C. transmitter |
US5278568A (en) | 1992-05-01 | 1994-01-11 | Megapulse, Incorporated | Method of and apparatus for two-way radio communication amongst fixed base and mobile terminal users employing meteor scatter signals for communications inbound from the mobile terminals and outbound from the base terminals via Loran communication signals |
US5563611A (en) | 1994-10-28 | 1996-10-08 | Megapulse, Inc. | Method of and apparatus for integration of Loran-C and satellite navigation system (SNS) technologies for improved system accuracy, availability and integrity |
US6014111A (en) | 1997-06-05 | 2000-01-11 | Megapulse, Inc. | Ferrite crossed-loop antenna of optimal geometry and construction and method of forming same |
US6539306B2 (en) | 2001-06-15 | 2003-03-25 | Gentex Corporation | Automotive mirror with integrated Loran components |
US6963301B2 (en) | 2002-08-19 | 2005-11-08 | G-Track Corporation | System and method for near-field electromagnetic ranging |
US6873300B2 (en) | 2003-04-04 | 2005-03-29 | Harris Corporation | Antenna system utilizing elevated, resonant, radial wires |
US7391369B2 (en) * | 2005-11-29 | 2008-06-24 | Megapulse, Inc. | Method of and apparatus for eliminating quadrature-generated signals in magnetic cross-loop antennas |
US7782983B2 (en) | 2006-12-18 | 2010-08-24 | Crossrate Technology Llc | Method and system for demodulation of a differential Loran C signal |
US20080186232A1 (en) | 2007-02-02 | 2008-08-07 | Megapulse, Inc. | Method of and apparatus for true north azimuth determination using the combination of crossed loop antenna and radio positioning system technologies |
US8648764B2 (en) * | 2011-05-26 | 2014-02-11 | The Charles Stark Draper Laboratory, Inc. | Components and methods for designing efficient antennae |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003092509A (ja) * | 2001-07-13 | 2003-03-28 | Sumida Corporation | アンテナコイル |
US20100103025A1 (en) * | 2002-08-19 | 2010-04-29 | Q-Track Corporation | Near Field Electromagnetic Calibration System |
US20170160370A1 (en) * | 2015-12-02 | 2017-06-08 | Honeywell International Inc. | Low frequency/medium frequency (lf/mf) multi mode antenna/receiver |
JP2019062372A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社Soken | 複合アンテナ装置 |
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US20200371187A1 (en) | 2020-11-26 |
CA3079161C (en) | 2024-01-02 |
KR20200135732A (ko) | 2020-12-03 |
EP3742546A1 (en) | 2020-11-25 |
KR102565645B1 (ko) | 2023-08-09 |
US11600926B2 (en) | 2023-03-07 |
CA3079161A1 (en) | 2020-11-22 |
JP7432440B2 (ja) | 2024-02-16 |
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