WO1999042788A8 - Method and apparatus for determining altitude - Google Patents

Method and apparatus for determining altitude

Info

Publication number
WO1999042788A8
WO1999042788A8 PCT/US1999/004004 US9904004W WO9942788A8 WO 1999042788 A8 WO1999042788 A8 WO 1999042788A8 US 9904004 W US9904004 W US 9904004W WO 9942788 A8 WO9942788 A8 WO 9942788A8
Authority
WO
WIPO (PCT)
Prior art keywords
altitude
determination
sources
gps
estimated error
Prior art date
Application number
PCT/US1999/004004
Other languages
French (fr)
Other versions
WO1999042788A1 (en
Inventor
Steve C Johnson
Hans R Di Muller
Original Assignee
Allied Signal Inc
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 Allied Signal Inc filed Critical Allied Signal Inc
Priority to EP99908417A priority Critical patent/EP1058816B1/en
Priority to DE69916254T priority patent/DE69916254T2/en
Publication of WO1999042788A1 publication Critical patent/WO1999042788A1/en
Publication of WO1999042788A8 publication Critical patent/WO1999042788A8/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/005Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/14Receivers specially adapted for specific applications

Abstract

Methods and apparatus for determining altitude, specifically altitude in an aircraft, and an estimated error of the altitude. The altitude determination preferably uses a first altitude based on hydrostatic calculations, including local pressure and temperature, as well as a second altitude which is preferably a GPS altitude. A radio altimetry can also be used instead of or to complement the GPS altitude. Other sources of altitude determination can be used in the equation for the calculation of the final altitude. Each of the sources of altitude determination is provided with a complementary estimated error. In the final determination of the probable altitude, each source of altitude information is preferably accorded a weighting according to the estimated error of the altitude source. For global positioning altitude, the final combination of the altitude sources uses a complementary filter which takes into account the selective availability of the GPS altitude.
PCT/US1999/004004 1998-02-24 1999-02-24 Method and apparatus for determining altitude WO1999042788A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99908417A EP1058816B1 (en) 1998-02-24 1999-02-24 Method and apparatus for determining altitude
DE69916254T DE69916254T2 (en) 1998-02-24 1999-02-24 METHOD AND DEVICE FOR HEIGHT DETERMINATION

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US7580998P 1998-02-24 1998-02-24
US60/075,809 1998-02-24
US9739298P 1998-08-21 1998-08-21
US60/097,392 1998-08-21
US09/255,670 1999-02-23
US09/255,670 US6216064B1 (en) 1998-02-24 1999-02-23 Method and apparatus for determining altitude

Publications (2)

Publication Number Publication Date
WO1999042788A1 WO1999042788A1 (en) 1999-08-26
WO1999042788A8 true WO1999042788A8 (en) 1999-10-28

Family

ID=27372752

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/004004 WO1999042788A1 (en) 1998-02-24 1999-02-24 Method and apparatus for determining altitude

Country Status (2)

Country Link
US (1) US6216064B1 (en)
WO (1) WO1999042788A1 (en)

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Also Published As

Publication number Publication date
WO1999042788A1 (en) 1999-08-26
US6216064B1 (en) 2001-04-10

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