SE8204526L - Airborne monopulse radar for measuring distance to the ground surface - Google Patents

Airborne monopulse radar for measuring distance to the ground surface

Info

Publication number
SE8204526L
SE8204526L SE8204526A SE8204526A SE8204526L SE 8204526 L SE8204526 L SE 8204526L SE 8204526 A SE8204526 A SE 8204526A SE 8204526 A SE8204526 A SE 8204526A SE 8204526 L SE8204526 L SE 8204526L
Authority
SE
Sweden
Prior art keywords
probability
difference
monopulse radar
variances
iso
Prior art date
Application number
SE8204526A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8204526D0 (en
Inventor
Eric Arthur North Whitehead
Original Assignee
Marconi Avionics
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 Marconi Avionics filed Critical Marconi Avionics
Publication of SE8204526D0 publication Critical patent/SE8204526D0/en
Publication of SE8204526L publication Critical patent/SE8204526L/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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/44—Monopulse radar, i.e. simultaneous lobing
    • 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/288—Coherent receivers
    • G01S7/2886—Coherent receivers using I/Q processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

In an airbourne ground-ranging monopulse radar system the sum (S), azimuth difference (A) and elevation difference (E) signals derived from a plurality of statistically-independent radar returns are analysed to obtain an estimate of the orientation of an iso-probability-density surface defining (with respect to corresponding coordinate axes) S, A and E amplitude combinations of a particular probability density. The orientation of this iso-probability surface indicates the target elevation off boresight, and is independent of any across-track ground slope. In a practical embodiment (fig. 8) the two difference signals are first split into separate in-phase and quadrature components A', A", E', E" relative to the sum signal S. Variances and co-variances of these four components and S are then derived (10 - 15), and an appropriate function thereof computed (16 - 22). <IMAGE>
SE8204526A 1981-07-31 1982-07-30 Airborne monopulse radar for measuring distance to the ground surface SE8204526L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB8123408.0A GB8123408D0 (en) 1981-07-31 1981-07-31 Radar ranging system

Publications (2)

Publication Number Publication Date
SE8204526D0 SE8204526D0 (en) 1982-07-30
SE8204526L true SE8204526L (en) 1995-12-13

Family

ID=10523587

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8204526A SE8204526L (en) 1981-07-31 1982-07-30 Airborne monopulse radar for measuring distance to the ground surface

Country Status (3)

Country Link
FR (1) FR2725526A1 (en)
GB (2) GB8123408D0 (en)
SE (1) SE8204526L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69721085T2 (en) 1996-05-14 2004-04-22 Honeywell International Inc. Autonomous landing system
EP1072901B1 (en) * 1996-05-14 2003-07-09 AlliedSignal Inc. Autonomous landing guidance system
FR3027406B1 (en) * 2014-10-16 2020-10-09 Thales Sa ECARTOMETRY MEASUREMENT PROCESS INSENSITIVE TO PARASITE SIGNALS
FR3104268B1 (en) * 2019-12-04 2021-12-17 Thales Sa Method and device for measuring the height of an aircraft in flight relative to at least one point on the ground
RU2753370C1 (en) * 2020-11-09 2021-08-13 Владимир Иванович Винокуров Method for measuring angular coordinates and radio location target coordinator

Also Published As

Publication number Publication date
FR2725526A1 (en) 1996-04-12
GB8123408D0 (en) 1995-11-08
GB2292032B (en) 1996-06-26
SE8204526D0 (en) 1982-07-30
GB8220470D0 (en) 1995-11-22
GB2292032A (en) 1996-02-07

Similar Documents

Publication Publication Date Title
Chernyak Fundamentals of multisite radar systems: multistatic radars and multistatic radar systems
US4489322A (en) Radar calibration using direct measurement equipment and oblique photometry
EP0093603B1 (en) Moving target ordnance control
US4386355A (en) System for determining the location of an airborne vehicle to the earth using a satellite-base signal source
DE69124375D1 (en) MONOPULUS PROCESSING SYSTEMS
US5755400A (en) Inertial instrumentation correction technique
US5489907A (en) Airborne SAR system for determining the topography of a terrain
US3838424A (en) Microwave interference pattern sensor
ATE233909T1 (en) HIGH RESOLUTION SYNTHETIC APERTURE RADAR SYSTEM
US3727219A (en) Interferometer null multiplication technique and apparatus
SE8204526L (en) Airborne monopulse radar for measuring distance to the ground surface
US3007155A (en) Ground contour mapping system
Stone et al. Air-to-ground MTI radar using a displaced phase center, phased array
US3259898A (en) Doppler radar system
EP0411902B1 (en) Methods and systems of attitude determination
Rinehart et al. A technique for determining antenna beam patterns using a ground target
JPS5443496A (en) Radar system
TORBY Frequency independent sidelobe suppression and lobesharpening using broad beam antennas
CHOI Comments on Kalman filter applications to radar tracking
Howard Investigation and application of radar techniques for low-altitude target tracking
Johns Multiple target instrumentation radar/MIR
ROLFE et al. Radar calibration(conferences)
DERENYI et al. Cartographic aspects of dual-frequency dual-polarization SAR imagery
HOFMEISTER et al. Modular Survivable Radar for battlefield surveillance applications
Morden et al. An analysis of SAPPHIRE image parameters as a function of processing parameters(for synthetic aperture radar data processing)

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8204526-1

Format of ref document f/p: F