SE9702531D0 - Method and apparatus for reducing the impact of systematic measurement errors - Google Patents

Method and apparatus for reducing the impact of systematic measurement errors

Info

Publication number
SE9702531D0
SE9702531D0 SE9702531A SE9702531A SE9702531D0 SE 9702531 D0 SE9702531 D0 SE 9702531D0 SE 9702531 A SE9702531 A SE 9702531A SE 9702531 A SE9702531 A SE 9702531A SE 9702531 D0 SE9702531 D0 SE 9702531D0
Authority
SE
Sweden
Prior art keywords
phone
sensors
speed
impact
reducing
Prior art date
Application number
SE9702531A
Other languages
Swedish (sv)
Other versions
SE9702531L (en
SE509827C2 (en
Inventor
Thomas Kronhamn
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9702531A priority Critical patent/SE509827C2/en
Publication of SE9702531D0 publication Critical patent/SE9702531D0/en
Publication of SE9702531L publication Critical patent/SE9702531L/en
Publication of SE509827C2 publication Critical patent/SE509827C2/en

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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Navigation (AREA)

Abstract

The position of the phone is calculated taking into account the speed of which it is travelling through the cell, by calculating the speed according to the difference in positional data supplied to a sequence filter by two or more sensors. At least one of the sensors is used to provide data for the speed with which the phone is moving through the cell, and the actual data used to record the position of the phone is based on figures for the speed gathered from two position sensors. An Independent claim is also included for the sensor system (300) used, which contains two or more sensors (301, 303), each sensor being provided with at least one suppressor unit (307, 308) and at least one processor unit (309, 311; 310, 312). Information from the sensors is combined in a sequence filter (305) in order to provides the position of the phone. The processor units supply the sequence filter with the calculated speed at which the phone is moving away from at least one of the sensors, and they also calculate the speed at which the filter is supplied with information on the position of the phone.
SE9702531A 1997-07-01 1997-07-01 Reducing effect of systematic measuring errors when gathering data from sensors used to record positions of mobile phones within network cell SE509827C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9702531A SE509827C2 (en) 1997-07-01 1997-07-01 Reducing effect of systematic measuring errors when gathering data from sensors used to record positions of mobile phones within network cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9702531A SE509827C2 (en) 1997-07-01 1997-07-01 Reducing effect of systematic measuring errors when gathering data from sensors used to record positions of mobile phones within network cell

Publications (3)

Publication Number Publication Date
SE9702531D0 true SE9702531D0 (en) 1997-07-01
SE9702531L SE9702531L (en) 1999-01-02
SE509827C2 SE509827C2 (en) 1999-03-08

Family

ID=20407593

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9702531A SE509827C2 (en) 1997-07-01 1997-07-01 Reducing effect of systematic measuring errors when gathering data from sensors used to record positions of mobile phones within network cell

Country Status (1)

Country Link
SE (1) SE509827C2 (en)

Also Published As

Publication number Publication date
SE9702531L (en) 1999-01-02
SE509827C2 (en) 1999-03-08

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Legal Events

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