HK1071932A1 - Method for open loop tracking gps signals - Google Patents
Method for open loop tracking gps signalsInfo
- Publication number
- HK1071932A1 HK1071932A1 HK05104654A HK05104654A HK1071932A1 HK 1071932 A1 HK1071932 A1 HK 1071932A1 HK 05104654 A HK05104654 A HK 05104654A HK 05104654 A HK05104654 A HK 05104654A HK 1071932 A1 HK1071932 A1 HK 1071932A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- open loop
- gps signals
- loop tracking
- tracking gps
- signals
- Prior art date
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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0027—Transmission from mobile station to base station of actual mobile position, i.e. position determined on mobile
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
- G01S19/235—Calibration of receiver components
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0054—Transmission from base station to mobile station of actual mobile position, i.e. position calculation on base station
-
- 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
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/047—Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/09—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing processing capability normally carried out by the receiver
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/10—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals
- G01S19/11—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
-
- 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
- G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S2205/001—Transmission of position information to remote stations
- G01S2205/008—Transmission of position information to remote stations using a mobile telephone network
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2111—Location-sensitive, e.g. geographical location, GPS
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
- H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
- H03J2200/11—Cellular receiver, e.g. GSM, combined with a GPS receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/029,357 US6633255B2 (en) | 1995-10-09 | 2001-10-22 | Method for open loop tracking GPS signals |
PCT/US2002/033932 WO2003036322A2 (en) | 2001-10-22 | 2002-10-16 | Method for open loop tracking gps signals |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1071932A1 true HK1071932A1 (en) | 2005-08-05 |
Family
ID=21848621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK05104654A HK1071932A1 (en) | 2001-10-22 | 2005-06-02 | Method for open loop tracking gps signals |
Country Status (8)
Country | Link |
---|---|
US (1) | US6633255B2 (ko) |
EP (3) | EP1438602A2 (ko) |
JP (1) | JP4754783B2 (ko) |
KR (1) | KR100966773B1 (ko) |
CN (1) | CN100399044C (ko) |
AU (1) | AU2002340281A1 (ko) |
HK (1) | HK1071932A1 (ko) |
WO (1) | WO2003036322A2 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109444935A (zh) * | 2018-10-17 | 2019-03-08 | 桂林电子科技大学 | 一种低采样率的多普勒周跳探测和修复方法 |
Families Citing this family (154)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8352400B2 (en) | 1991-12-23 | 2013-01-08 | Hoffberg Steven M | Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore |
US10361802B1 (en) | 1999-02-01 | 2019-07-23 | Blanding Hovenweep, Llc | Adaptive pattern recognition based control system and method |
US7092369B2 (en) | 1995-11-17 | 2006-08-15 | Symbol Technologies, Inc. | Communications network with wireless gateways for mobile terminal access |
EP0924532B1 (en) * | 1997-11-19 | 2006-04-19 | IMEC vzw | Method and apparatus for receiving GPS/GLONASS signals |
US7904187B2 (en) | 1999-02-01 | 2011-03-08 | Hoffberg Steven M | Internet appliance system and method |
US20040143392A1 (en) | 1999-07-12 | 2004-07-22 | Skybitz, Inc. | System and method for fast acquisition reporting using communication satellite range measurement |
US8255149B2 (en) | 1999-07-12 | 2012-08-28 | Skybitz, Inc. | System and method for dual-mode location determination |
EP1190508B1 (en) * | 2000-05-03 | 2014-01-01 | MITAC International Corporation | Method and apparatus for interference reduction |
US7970412B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US6462708B1 (en) | 2001-04-05 | 2002-10-08 | Sirf Technology, Inc. | GPS-based positioning system for mobile GPS terminals |
US8078189B2 (en) | 2000-08-14 | 2011-12-13 | Sirf Technology, Inc. | System and method for providing location based services over a network |
US6427120B1 (en) | 2000-08-14 | 2002-07-30 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US7929928B2 (en) * | 2000-05-18 | 2011-04-19 | Sirf Technology Inc. | Frequency phase correction system |
US7970411B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US7949362B2 (en) | 2000-05-18 | 2011-05-24 | Sirf Technology, Inc. | Satellite positioning aided communication system selection |
US6389291B1 (en) * | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US7012937B2 (en) * | 2000-06-26 | 2006-03-14 | Hughes Electronics Corporation | Method and apparatus for tracking a synchronization signal |
US7680178B2 (en) * | 2000-08-24 | 2010-03-16 | Sirf Technology, Inc. | Cross-correlation detection and elimination in a receiver |
US6529829B2 (en) * | 2000-08-24 | 2003-03-04 | Sirf Technology, Inc. | Dead reckoning system for reducing auto-correlation or cross-correlation in weak signals |
US7257179B2 (en) * | 2001-03-06 | 2007-08-14 | Research In Motion Limited | Method and apparatus for frequency tracking in a space time transmit diversity receiver |
US7668554B2 (en) | 2001-05-21 | 2010-02-23 | Sirf Technology, Inc. | Network system for aided GPS broadcast positioning |
US7183971B1 (en) * | 2001-09-26 | 2007-02-27 | Interstate Electronics Corporation | Hybrid translator in a global positioning system (GPS) |
US6456648B1 (en) * | 2001-10-01 | 2002-09-24 | Interdigital Technology Corporation | Code tracking loop with automatic power normalization |
FR2837638B1 (fr) * | 2002-03-22 | 2006-07-14 | Thales Sa | Procede de traitement de signal en presence d'interferences |
US8126889B2 (en) | 2002-03-28 | 2012-02-28 | Telecommunication Systems, Inc. | Location fidelity adjustment based on mobile subscriber privacy profile |
US9154906B2 (en) | 2002-03-28 | 2015-10-06 | Telecommunication Systems, Inc. | Area watcher for wireless network |
US8918073B2 (en) | 2002-03-28 | 2014-12-23 | Telecommunication Systems, Inc. | Wireless telecommunications location based services scheme selection |
US8290505B2 (en) | 2006-08-29 | 2012-10-16 | Telecommunications Systems, Inc. | Consequential location derived information |
US7426380B2 (en) | 2002-03-28 | 2008-09-16 | Telecommunication Systems, Inc. | Location derived presence information |
US8027697B2 (en) | 2007-09-28 | 2011-09-27 | Telecommunication Systems, Inc. | Public safety access point (PSAP) selection for E911 wireless callers in a GSM type system |
US7372892B2 (en) * | 2002-04-29 | 2008-05-13 | Interdigital Technology Corporation | Simple and robust digital code tracking loop for wireless communication systems |
US6747596B2 (en) * | 2002-06-20 | 2004-06-08 | Sirf Technology, Inc. | Generic satellite positioning system receivers with programmable inputs |
US6738013B2 (en) * | 2002-06-20 | 2004-05-18 | Sirf Technology, Inc. | Generic satellite positioning system receivers with selective inputs and outputs |
WO2004001439A1 (en) * | 2002-06-20 | 2003-12-31 | Sirf Technology, Inc. | Generic satellite positioning system receivers with programmable inputs and selectable inputs and outputs |
US7206335B2 (en) * | 2002-10-02 | 2007-04-17 | Interdigital Technology Corporation | Optimum interpolator method and apparatus for digital timing adjustment |
AU2003279161A1 (en) * | 2002-10-04 | 2004-05-04 | Sigtec Navigation Pty Ltd | Satellite-based positioning system improvement |
AU2002368401A1 (en) * | 2002-12-02 | 2004-06-23 | Nokia Corporation | Determination of the position of a pulse peak |
US6888497B2 (en) | 2002-12-27 | 2005-05-03 | Motorola, Inc. | Method and mobile station for determining a code phase |
US7221696B1 (en) * | 2003-03-03 | 2007-05-22 | Itt Manufacturing Enterprises, Inc. | Communication system and method for acquiring pseudonoise codes or carrier signals under conditions of relatively large chip rate uncertainty |
FR2853967B1 (fr) * | 2003-04-15 | 2007-11-09 | Thales Sa | Procede d'acquisition d'un signal de radionavigation par satellite |
US7672404B2 (en) * | 2003-05-19 | 2010-03-02 | Broadcom Corporation | Method and apparatus for reducing the time required to acquire a GPS signal |
JP2005017198A (ja) * | 2003-06-27 | 2005-01-20 | Seiko Epson Corp | Gps受信機 |
US8013787B2 (en) | 2003-09-02 | 2011-09-06 | Sirf Technology Inc. | Control and features for satellite positioning system receivers |
US8138972B2 (en) * | 2003-09-02 | 2012-03-20 | Csr Technology Inc. | Signal processing system for satellite positioning signals |
US7424293B2 (en) | 2003-12-02 | 2008-09-09 | Telecommunication Systems, Inc. | User plane location based service using message tunneling to support roaming |
KR20080102264A (ko) * | 2003-12-08 | 2008-11-24 | 콸콤 인코포레이티드 | 총 수신 전력을 이용한 과도 지연 추정 |
KR100566277B1 (ko) * | 2003-12-09 | 2006-03-30 | 삼성전자주식회사 | 사용자 단말기에서 gps 신호 획득 방법 |
US7260186B2 (en) | 2004-03-23 | 2007-08-21 | Telecommunication Systems, Inc. | Solutions for voice over internet protocol (VoIP) 911 location services |
US20080090546A1 (en) | 2006-10-17 | 2008-04-17 | Richard Dickinson | Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging |
US20080126535A1 (en) | 2006-11-28 | 2008-05-29 | Yinjun Zhu | User plane location services over session initiation protocol (SIP) |
US7480567B2 (en) * | 2004-09-24 | 2009-01-20 | Nokia Corporation | Displaying a map having a close known location |
US8013789B2 (en) * | 2004-10-06 | 2011-09-06 | Ohio University | Systems and methods for acquisition and tracking of low CNR GPS signals |
US6985105B1 (en) | 2004-10-15 | 2006-01-10 | Telecommunication Systems, Inc. | Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations |
US7629926B2 (en) | 2004-10-15 | 2009-12-08 | Telecommunication Systems, Inc. | Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas |
US7764726B2 (en) * | 2004-12-01 | 2010-07-27 | Qualomm Incorporated | Systems, methods, and apparatus for jammer rejection |
US7764729B1 (en) * | 2005-03-25 | 2010-07-27 | Lockheed Martin Corporation | Channelized amplifier system and method |
JP4690088B2 (ja) * | 2005-03-30 | 2011-06-01 | Nec東芝スペースシステム株式会社 | Gpsサイクルスリップ自動補正装置、gps受信機、その自動補正方法、そのプログラム、及び記録媒体 |
US7353034B2 (en) | 2005-04-04 | 2008-04-01 | X One, Inc. | Location sharing and tracking using mobile phones or other wireless devices |
CA2605467C (en) * | 2005-04-25 | 2013-12-24 | University Of Massachusetts | Systems and methods for correcting optical reflectance measurements |
JP4193811B2 (ja) * | 2005-05-11 | 2008-12-10 | セイコーエプソン株式会社 | 測位装置、測位方法 |
US7558312B2 (en) * | 2005-06-30 | 2009-07-07 | O2Micro International Ltd. | Parallel correlator implementation using block integration for spread-spectrum communication |
US8660573B2 (en) | 2005-07-19 | 2014-02-25 | Telecommunications Systems, Inc. | Location service requests throttling |
US20080180318A1 (en) * | 2005-07-29 | 2008-07-31 | Glennon Eamonn P | Method and Apparatus for Reconstructing Time of Transmit from Assisted or Weak Signal GPS Type Observations |
US7526015B2 (en) * | 2005-09-15 | 2009-04-28 | 02Micro International Ltd. | Parallel correlator implementation using hybrid correlation in spread-spectrum communication |
US9282451B2 (en) | 2005-09-26 | 2016-03-08 | Telecommunication Systems, Inc. | Automatic location identification (ALI) service requests steering, connection sharing and protocol translation |
CN101287999B (zh) * | 2005-10-03 | 2011-11-02 | 天宝导航有限公司 | 带有时钟差建模的多gnss信号处理 |
US7825780B2 (en) | 2005-10-05 | 2010-11-02 | Telecommunication Systems, Inc. | Cellular augmented vehicle alarm notification together with location services for position of an alarming vehicle |
US7907551B2 (en) | 2005-10-06 | 2011-03-15 | Telecommunication Systems, Inc. | Voice over internet protocol (VoIP) location based 911 conferencing |
US8467320B2 (en) | 2005-10-06 | 2013-06-18 | Telecommunication Systems, Inc. | Voice over internet protocol (VoIP) multi-user conferencing |
EP1952173A2 (en) | 2005-10-28 | 2008-08-06 | SiRF Technology, Inc. | Global positioning system receiver timeline management |
JP4274173B2 (ja) | 2005-12-15 | 2009-06-03 | セイコーエプソン株式会社 | 測位装置、測位方法及びプログラム |
US8150363B2 (en) | 2006-02-16 | 2012-04-03 | Telecommunication Systems, Inc. | Enhanced E911 network access for call centers |
US8059789B2 (en) | 2006-02-24 | 2011-11-15 | Telecommunication Systems, Inc. | Automatic location identification (ALI) emergency services pseudo key (ESPK) |
US9167553B2 (en) | 2006-03-01 | 2015-10-20 | Telecommunication Systems, Inc. | GeoNexus proximity detector network |
US7899450B2 (en) | 2006-03-01 | 2011-03-01 | Telecommunication Systems, Inc. | Cellular augmented radar/laser detection using local mobile network within cellular network |
US7471236B1 (en) | 2006-03-01 | 2008-12-30 | Telecommunication Systems, Inc. | Cellular augmented radar/laser detector |
ATE450928T1 (de) * | 2006-03-22 | 2009-12-15 | Qualcomm Inc | Breitband frequenzdiskriminator und funkortungsempfänger |
US7570206B2 (en) * | 2006-03-23 | 2009-08-04 | Seiko Epson Corporation | Positioning device, positioning control method, positioning control program, and computer-readable recording medium having positioning control program recorded thereon |
EP1847837A1 (en) * | 2006-04-21 | 2007-10-24 | Fondazione Torino Wireless | Method and apparatus for frequency estimation |
US9658341B2 (en) * | 2006-04-28 | 2017-05-23 | Telecommunication Systems, Inc. | GNSS long-code acquisition, ambiguity resolution, and signal validation |
US8208605B2 (en) | 2006-05-04 | 2012-06-26 | Telecommunication Systems, Inc. | Extended efficient usage of emergency services keys |
US8296051B2 (en) * | 2006-05-18 | 2012-10-23 | The Boeing Company | Generalized high performance navigation system |
US7554481B2 (en) | 2006-05-18 | 2009-06-30 | The Boeing Company | Localized jamming of navigation signals |
US7579987B2 (en) * | 2006-05-18 | 2009-08-25 | The Boeing Company | Low earth orbit satellite providing navigation signals |
US7583225B2 (en) * | 2006-05-18 | 2009-09-01 | The Boeing Company | Low earth orbit satellite data uplink |
US7746274B2 (en) * | 2006-06-20 | 2010-06-29 | Atheros Communications, Inc. | Global positioning receiver with PN code output |
FR2904498B1 (fr) * | 2006-07-31 | 2010-05-07 | Cit Alcatel | Recepteur de navigation spatial a fonctionnement assiste par des informations de navigation |
EP2047290A2 (en) | 2006-08-01 | 2009-04-15 | Qualcomm Incorporated | System and/or method for providing information updates to a location server |
US7605751B2 (en) * | 2006-09-14 | 2009-10-20 | Honeywell International Inc. | Global navigation satellite system repeater disruption monitoring |
WO2008057477A2 (en) | 2006-11-03 | 2008-05-15 | Telecommunication Systems, Inc. | Roaming gateway enabling location based services (lbs) roaming for user plane in cdma networks without requiring use of a mobile positioning center (mpc) |
US20080238772A1 (en) * | 2007-01-24 | 2008-10-02 | Ohio University | Method and apparatus for using multipath signal in gps architecture |
US8050386B2 (en) | 2007-02-12 | 2011-11-01 | Telecommunication Systems, Inc. | Mobile automatic location identification (ALI) for first responders |
JP2009002659A (ja) * | 2007-06-19 | 2009-01-08 | Seiko Epson Corp | コヒーレント積算増進回路、測位回路、電子機器、コヒーレント積算増進方法、測位方法、プログラム、及び記憶媒体 |
WO2009019754A1 (ja) * | 2007-08-06 | 2009-02-12 | Pioneer Corporation | 衛星測位装置及び捕捉方法 |
EP2196014A4 (en) | 2007-09-17 | 2014-12-24 | Telecomm Systems Inc | 911 EMERGENCY SERVICE DATA MESSAGING |
US20100231444A1 (en) * | 2007-10-26 | 2010-09-16 | Panasonic Corporation | Positioning receiver and positioning method |
US9130963B2 (en) | 2011-04-06 | 2015-09-08 | Telecommunication Systems, Inc. | Ancillary data support in session initiation protocol (SIP) messaging |
US8135097B2 (en) * | 2007-11-30 | 2012-03-13 | Qualcomm Incorporated | Sequential tracking and offline demodulation in receiver |
US7929530B2 (en) | 2007-11-30 | 2011-04-19 | Telecommunication Systems, Inc. | Ancillary data support in session initiation protocol (SIP) messaging |
US7940170B2 (en) | 2008-03-05 | 2011-05-10 | Omnivision Technologies, Inc. | Tracking system with user-definable private ID for improved privacy protection |
US8094702B2 (en) | 2008-04-28 | 2012-01-10 | Qualcomm Incorporated | System and/or method for detecting multi-tone jamming |
US7952518B2 (en) | 2008-05-30 | 2011-05-31 | The Boeing Company | Internet hotspots localization using satellite systems |
US8542147B2 (en) | 2008-05-30 | 2013-09-24 | The Boeing Company | Precise absolute time transfer from a satellite system |
US8035558B2 (en) * | 2008-05-30 | 2011-10-11 | The Boeing Company | Precise absolute time transfer from a satellite system |
US8068587B2 (en) | 2008-08-22 | 2011-11-29 | Telecommunication Systems, Inc. | Nationwide table routing of voice over internet protocol (VOIP) emergency calls |
EP2347395A4 (en) | 2008-10-14 | 2016-11-02 | Telecomm Systems Inc | Location Based Approach Alert |
US8892128B2 (en) | 2008-10-14 | 2014-11-18 | Telecommunication Systems, Inc. | Location based geo-reminders |
US8200446B2 (en) * | 2008-12-12 | 2012-06-12 | Qualcomm Incorporated | Waveform correlation result processing methods and apparatuses |
TWI386676B (zh) * | 2008-12-24 | 2013-02-21 | Altek Corp | Get the accuracy of the global positioning system signal tracking frequency method |
US7859455B2 (en) * | 2009-01-06 | 2010-12-28 | The Boeing Company | Local clock frequency calibration using low earth orbit (LEO) satellites |
US8044851B2 (en) * | 2009-04-17 | 2011-10-25 | Mstar Semiconductor, Inc. | Method for suppressing multipath errors in a satellite navigation receiver |
US9301191B2 (en) | 2013-09-20 | 2016-03-29 | Telecommunication Systems, Inc. | Quality of service to over the top applications used with VPN |
US8867485B2 (en) | 2009-05-05 | 2014-10-21 | Telecommunication Systems, Inc. | Multiple location retrieval function (LRF) network having location continuity |
EP2452156B1 (en) * | 2009-07-10 | 2021-09-01 | Webfleet Solutions B.V. | Accelerometer system, method and computer program product |
RU2432585C1 (ru) * | 2010-04-01 | 2011-10-27 | Мстар Семикондактор, Инк. | Способ подавления ошибок многолучевости в приемнике спутниковой навигации |
US8315599B2 (en) | 2010-07-09 | 2012-11-20 | Telecommunication Systems, Inc. | Location privacy selector |
US8336664B2 (en) | 2010-07-09 | 2012-12-25 | Telecommunication Systems, Inc. | Telematics basic mobile device safety interlock |
US9640865B2 (en) * | 2010-10-21 | 2017-05-02 | Locata Corporation Pty Ltd | Method and apparatus for forming a remote beam |
US8688087B2 (en) | 2010-12-17 | 2014-04-01 | Telecommunication Systems, Inc. | N-dimensional affinity confluencer |
US8942743B2 (en) | 2010-12-17 | 2015-01-27 | Telecommunication Systems, Inc. | iALERT enhanced alert manager |
WO2012087353A1 (en) | 2010-12-22 | 2012-06-28 | Telecommunication Systems, Inc. | Area event handling when current network does not cover target area |
US8358728B2 (en) * | 2011-01-07 | 2013-01-22 | Qualcomm Incorporated | Calibration of synthesizer phase using reference harmonic |
WO2012141762A1 (en) | 2011-02-25 | 2012-10-18 | Telecommunication Systems, Inc. | Mobile internet protocol (ip) location |
JPWO2012132089A1 (ja) * | 2011-03-25 | 2014-07-24 | 日本電気株式会社 | 同期装置および同期方法 |
US8649806B2 (en) | 2011-09-02 | 2014-02-11 | Telecommunication Systems, Inc. | Aggregate location dynometer (ALD) |
US9479344B2 (en) | 2011-09-16 | 2016-10-25 | Telecommunication Systems, Inc. | Anonymous voice conversation |
WO2013048551A1 (en) | 2011-09-30 | 2013-04-04 | Telecommunication Systems, Inc. | Unique global identifier for minimizing prank 911 calls |
CN102445698B (zh) * | 2011-11-07 | 2013-06-05 | 东南大学 | 一种gps接收机卫星跟踪失锁的判定方法 |
CN102426368B (zh) * | 2011-11-07 | 2013-06-05 | 东南大学 | Gps接收机基于扩展卡尔曼滤波器跟踪环路的失锁检测方法 |
US9264537B2 (en) | 2011-12-05 | 2016-02-16 | Telecommunication Systems, Inc. | Special emergency call treatment based on the caller |
US9313637B2 (en) | 2011-12-05 | 2016-04-12 | Telecommunication Systems, Inc. | Wireless emergency caller profile data delivery over a legacy interface |
US8984591B2 (en) | 2011-12-16 | 2015-03-17 | Telecommunications Systems, Inc. | Authentication via motion of wireless device movement |
US9384339B2 (en) | 2012-01-13 | 2016-07-05 | Telecommunication Systems, Inc. | Authenticating cloud computing enabling secure services |
US8688174B2 (en) | 2012-03-13 | 2014-04-01 | Telecommunication Systems, Inc. | Integrated, detachable ear bud device for a wireless phone |
US9307372B2 (en) | 2012-03-26 | 2016-04-05 | Telecommunication Systems, Inc. | No responders online |
US9544260B2 (en) | 2012-03-26 | 2017-01-10 | Telecommunication Systems, Inc. | Rapid assignment dynamic ownership queue |
US9338153B2 (en) | 2012-04-11 | 2016-05-10 | Telecommunication Systems, Inc. | Secure distribution of non-privileged authentication credentials |
CN102707295B (zh) * | 2012-06-26 | 2013-12-25 | 西安华迅微电子有限公司 | 一种检测北斗卫星b1频段民用信号发生互相关的方法 |
US9313638B2 (en) | 2012-08-15 | 2016-04-12 | Telecommunication Systems, Inc. | Device independent caller data access for emergency calls |
US9208346B2 (en) | 2012-09-05 | 2015-12-08 | Telecommunication Systems, Inc. | Persona-notitia intellection codifier |
US9456301B2 (en) | 2012-12-11 | 2016-09-27 | Telecommunication Systems, Inc. | Efficient prisoner tracking |
US10222482B2 (en) * | 2013-01-18 | 2019-03-05 | Seiko Epson Corporation | Position information generation device, timing signal generation device, electronic apparatus, and moving object |
US8983047B2 (en) | 2013-03-20 | 2015-03-17 | Telecommunication Systems, Inc. | Index of suspicion determination for communications request |
US9408034B2 (en) | 2013-09-09 | 2016-08-02 | Telecommunication Systems, Inc. | Extended area event for network based proximity discovery |
US9516104B2 (en) | 2013-09-11 | 2016-12-06 | Telecommunication Systems, Inc. | Intelligent load balancer enhanced routing |
US9479897B2 (en) | 2013-10-03 | 2016-10-25 | Telecommunication Systems, Inc. | SUPL-WiFi access point controller location based services for WiFi enabled mobile devices |
KR101460098B1 (ko) * | 2013-10-23 | 2014-11-20 | 건국대학교 산학협력단 | 위성 앙각별 시그마 팽창계수 산출 시스템 및 그 방법 |
EP2924468A1 (en) * | 2014-03-28 | 2015-09-30 | The European Community, represented by the European Commission | Method and apparatus for processing radionavigation signals for atmospheric monitoring |
US9515697B2 (en) * | 2015-03-30 | 2016-12-06 | Honeywell International Inc. | Scanning correlator for global navigation satellite system signal tracking |
CN106066471A (zh) * | 2016-06-01 | 2016-11-02 | 安徽建筑大学 | 一种移动目标的定位方法及系统 |
GB2562253B (en) | 2017-05-09 | 2021-11-03 | Imagination Tech Ltd | Efficient detection of ranging code correlation function of a GNSS signal |
CN107367741B (zh) * | 2017-09-13 | 2019-06-04 | 中国人民解放军国防科技大学 | 用于gnss信号间歇性跟踪的开环卡尔曼方法 |
CN113391330B (zh) * | 2021-05-10 | 2023-06-09 | 中国科学院国家授时中心 | 一种卫星导航信号快速跟踪方法 |
CN113792371B (zh) * | 2021-09-27 | 2024-01-26 | 江西科技学院 | 基于锁相值的轨道异常匹配的诊断方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4578678A (en) * | 1983-11-14 | 1986-03-25 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | High dynamic global positioning system receiver |
AU639308B2 (en) * | 1990-03-09 | 1993-07-22 | Sigtec Navigation Pty Ltd | G p s receiver |
WO1996038876A1 (fr) * | 1995-05-29 | 1996-12-05 | Nippon Steel Corporation | Dispositif de telecommunications par satellite monte sur un corps mobile |
US6133871A (en) | 1995-10-09 | 2000-10-17 | Snaptrack, Inc. | GPS receiver having power management |
US5841396A (en) * | 1996-03-08 | 1998-11-24 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US5960044A (en) * | 1996-11-14 | 1999-09-28 | Scientific-Atlanta, Inc. | Apparatus and method for block phase estimation |
US6351503B1 (en) * | 1997-09-12 | 2002-02-26 | Stanford Telecommunications, Inc. | Threshold extension block phase estimator for quasi-coherent communications systems |
US6195328B1 (en) * | 1998-04-15 | 2001-02-27 | The United States Of America As Represented By The Secretary Of The Air Force | Block adjustment of synchronizing signal for phase-coded signal tracking |
-
2001
- 2001-10-22 US US10/029,357 patent/US6633255B2/en not_active Expired - Lifetime
-
2002
- 2002-10-16 CN CNB028233522A patent/CN100399044C/zh not_active Expired - Lifetime
- 2002-10-16 EP EP02778629A patent/EP1438602A2/en not_active Ceased
- 2002-10-16 AU AU2002340281A patent/AU2002340281A1/en not_active Abandoned
- 2002-10-16 EP EP12000553A patent/EP2469302A1/en not_active Ceased
- 2002-10-16 WO PCT/US2002/033932 patent/WO2003036322A2/en active Application Filing
- 2002-10-16 JP JP2003538766A patent/JP4754783B2/ja not_active Expired - Lifetime
- 2002-10-16 KR KR1020047006016A patent/KR100966773B1/ko active IP Right Grant
- 2002-10-16 EP EP12000552A patent/EP2472284A1/en not_active Withdrawn
-
2005
- 2005-06-02 HK HK05104654A patent/HK1071932A1/xx not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109444935A (zh) * | 2018-10-17 | 2019-03-08 | 桂林电子科技大学 | 一种低采样率的多普勒周跳探测和修复方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2472284A1 (en) | 2012-07-04 |
JP2005538339A (ja) | 2005-12-15 |
EP1438602A2 (en) | 2004-07-21 |
CN1592855A (zh) | 2005-03-09 |
AU2002340281A1 (en) | 2003-05-06 |
EP2469302A1 (en) | 2012-06-27 |
KR100966773B1 (ko) | 2010-06-29 |
JP4754783B2 (ja) | 2011-08-24 |
WO2003036322A2 (en) | 2003-05-01 |
KR20040045912A (ko) | 2004-06-02 |
WO2003036322A3 (en) | 2004-01-29 |
CN100399044C (zh) | 2008-07-02 |
US6633255B2 (en) | 2003-10-14 |
US20020084933A1 (en) | 2002-07-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK1071932A1 (en) | Method for open loop tracking gps signals | |
GB2379112B (en) | Method for acquiring azimuth information | |
AU2002219322A1 (en) | Closed loop fluid-handing system for well drilling | |
GB0015147D0 (en) | Tracking system | |
AU9118001A (en) | System and method for portal infrastructure tracking | |
GB0119859D0 (en) | Eye tracking system | |
EP1442438A4 (en) | PROSECUTION SYSTEM FOR LOCATING CURRENCY | |
AU4076700A (en) | Method for tracking the location of mobile units | |
GB2372395B (en) | Tracking system | |
GB0102881D0 (en) | A method of despreading GPS signals | |
GB0122228D0 (en) | GPS receiver and related method | |
GB2378835B (en) | Method for acquiring azimuth information | |
AU2002309840A1 (en) | Open loop minesweeping system | |
GB2365642B (en) | Global positioning system | |
AU2002228996A1 (en) | Gps receiver tracking system | |
SG122783A1 (en) | Integrated tracking system | |
GB0309425D0 (en) | Tracking system | |
AU2001281299A1 (en) | Methods for automatically detecting gps hardware | |
GB0008554D0 (en) | Tracking system | |
AU2001259161A1 (en) | Method for making polyimide | |
GB0103228D0 (en) | A method of despreading GPS signals | |
GB0112683D0 (en) | Magnetic tracking system | |
GB0212027D0 (en) | Magnetic tracking system | |
AU2002251793A1 (en) | Improved time tracking loop | |
AU2002354707A1 (en) | Method for selectively synthesising triethylenediamine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20121016 |