NL192282C - Verbeteringen met betrekking tot ionosfeersondering. - Google Patents

Verbeteringen met betrekking tot ionosfeersondering. Download PDF

Info

Publication number
NL192282C
NL192282C NL8515007A NL8515007A NL192282C NL 192282 C NL192282 C NL 192282C NL 8515007 A NL8515007 A NL 8515007A NL 8515007 A NL8515007 A NL 8515007A NL 192282 C NL192282 C NL 192282C
Authority
NL
Netherlands
Prior art keywords
frequency
receiver
signal
code
probe system
Prior art date
Application number
NL8515007A
Other languages
English (en)
Dutch (nl)
Other versions
NL192282B (nl
NL8515007A (nl
Original Assignee
Secr Defence Brit
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Secr Defence Brit filed Critical Secr Defence Brit
Publication of NL8515007A publication Critical patent/NL8515007A/nl
Publication of NL192282B publication Critical patent/NL192282B/xx
Application granted granted Critical
Publication of NL192282C publication Critical patent/NL192282C/nl

Links

Classifications

    • 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
    • G01S13/0218—Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/22—Scatter propagation systems, e.g. ionospheric, tropospheric or meteor scatter

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • General Physics & Mathematics (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Selective Calling Equipment (AREA)
NL8515007A 1984-10-30 1985-10-17 Verbeteringen met betrekking tot ionosfeersondering. NL192282C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8427440 1984-10-30
GB8427440 1984-10-30

Publications (3)

Publication Number Publication Date
NL8515007A NL8515007A (nl) 1992-10-01
NL192282B NL192282B (nl) 1996-12-02
NL192282C true NL192282C (nl) 1997-04-03

Family

ID=10568986

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8515007A NL192282C (nl) 1984-10-30 1985-10-17 Verbeteringen met betrekking tot ionosfeersondering.

Country Status (9)

Country Link
US (1) US5230076A (it)
AU (1) AU632279B2 (it)
CA (1) CA1333921C (it)
DE (1) DE3546469C2 (it)
FR (1) FR2714777B1 (it)
GB (1) GB2253971B (it)
IT (1) IT1235572B (it)
NL (1) NL192282C (it)
SE (1) SE469649B (it)

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US6747960B2 (en) 2001-12-21 2004-06-08 The Boeing Company Closed loop power control for TDMA links
US20040137840A1 (en) * 2003-01-15 2004-07-15 La Chapelle Michael De Bi-directional transponder apparatus and method of operation
US7751337B2 (en) * 2003-02-10 2010-07-06 The Boeing Company Method and apparatus for optimizing forward link data rate for radio frequency transmissions to mobile platforms
US7515916B1 (en) 2003-09-22 2009-04-07 Veriwave, Incorporated Method and apparatus for multi-dimensional channel sounding and radio frequency propagation measurements
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US7890821B2 (en) * 2007-10-04 2011-02-15 Veriwave, Inc. Channel impairment emulator systems and methods
US8189708B2 (en) * 2008-08-08 2012-05-29 The Boeing Company System and method for accurate downlink power control of composite QPSK modulated signals
WO2015013602A2 (en) * 2013-07-26 2015-01-29 Massachusetts Institute Of Technology Accurate timing distribution by high-frequency radio
RU2581627C2 (ru) * 2014-05-21 2016-04-20 Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") Лчм-ионозонд
US20160197669A1 (en) 2014-12-11 2016-07-07 Tesla Wireless Company LLC Communication method and system that uses low latency/low data bandwidth and high latency/high data bandwidth pathways
WO2016094857A1 (en) * 2014-12-12 2016-06-16 Services Development Company LLC Data transmission via a high frequency radio band
US9693330B1 (en) * 2015-07-30 2017-06-27 Rockwell Collins, Inc. Wideband high frequency based precision time transfer
GB2581700B (en) 2017-10-03 2022-06-01 Skywave Networks Llc Method and system of preconditioning transmitted signals
SG11202110768TA (en) 2017-10-04 2021-10-28 Skywave Networks Llc Technique for selecting the best frequency for transmission based on changing atmospheric conditions
CN111448767A (zh) * 2017-10-04 2020-07-24 天波网络有限责任公司 处理在跳数不同的路径上接收到的信号
BR112020008244A2 (pt) * 2017-10-25 2020-10-20 Skywave Networks Llc lógica fuzzy para processamento de metadados de transmissão
RU2685245C1 (ru) * 2018-03-19 2019-04-17 Акционерное общество "Научно-производственное предприятие "Полет" Устройство для анализа и выбора оптимальных авиационных декаметровых радиоканалов с использованием лчм сигналов
US11047967B2 (en) * 2018-07-12 2021-06-29 Southwest Research Institute Removal of directwave high frequency signal for ionospheric sounder return processing
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CN113992287B (zh) * 2021-10-26 2024-05-24 封开低频时码授时台 一种低频时码授时信号载波频率选择方法及系统
CN114545357B (zh) * 2022-04-25 2022-07-19 武汉大学 一种基于互谱分析的电离层Es层高分辨率垂直探测方法

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Also Published As

Publication number Publication date
NL192282B (nl) 1996-12-02
SE8603211L (sv) 1992-11-06
SE8603211D0 (sv) 1986-07-24
CA1333921C (en) 1995-01-10
DE3546469C2 (de) 1994-09-08
GB2253971B (en) 1993-02-03
FR2714777A1 (fr) 1995-07-07
SE469649B (sv) 1993-08-09
AU632279B2 (en) 1992-12-24
DE3546469A1 (de) 1993-07-29
IT8648153A0 (it) 1986-06-19
IT1235572B (it) 1992-09-11
NL8515007A (nl) 1992-10-01
FR2714777B1 (fr) 1996-04-26
US5230076A (en) 1993-07-20
GB2253971A (en) 1992-09-23

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
SNR Assignments of patents or rights arising from examined patent applications

Owner name: QINETIQ LIMITED

V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20051017