EP1057045A1 - Procede pour representer des images radar d'une zone de cible a surveiller - Google Patents

Procede pour representer des images radar d'une zone de cible a surveiller

Info

Publication number
EP1057045A1
EP1057045A1 EP99910230A EP99910230A EP1057045A1 EP 1057045 A1 EP1057045 A1 EP 1057045A1 EP 99910230 A EP99910230 A EP 99910230A EP 99910230 A EP99910230 A EP 99910230A EP 1057045 A1 EP1057045 A1 EP 1057045A1
Authority
EP
European Patent Office
Prior art keywords
images
radar
target area
optical images
data processing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP99910230A
Other languages
German (de)
English (en)
Inventor
Franz Witte
Rüdiger SCHEUNEMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP1057045A1 publication Critical patent/EP1057045A1/fr
Withdrawn legal-status Critical Current

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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • 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
    • G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • 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
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/062—Cathode-ray tube displays or other two dimensional or three-dimensional displays in which different colours are used

Definitions

  • the invention relates to a method for displaying radar images of a target area to be monitored, such as an airport, seaport or inland port.
  • Such target areas are generally defined by means of a carrier, such as an airplane, a ship, etc. carried surveillance system, which consists of a radar system and a data processing system. If such a radar system carried by a carrier, for example, detects an area of an airport, in particular a runway, or an entry area of a sea or inland port, backscatter signals of different strengths are obtained on the screens of the radar system.
  • a carrier such as an airplane, a ship, etc. carried surveillance system, which consists of a radar system and a data processing system. If such a radar system carried by a carrier, for example, detects an area of an airport, in particular a runway, or an entry area of a sea or inland port, backscatter signals of different strengths are obtained on the screens of the radar system.
  • Such a radar display has areas reproduced in different gray values without any noteworthy structures. Only from edges or striking points of buildings located in the target area, for example the tower of an airport, sea or inland port, a port entrance or a building from which the port area is monitored, do the radar image display show strikingly strongly or more reflectively Emphasize. Even in the case of a high-resolution radar image, a continuous image of the target area is not obtained, which can be compared to a pictorial, visual representation of the same area that was captured by means of the radar. On top of that, a representation obtained by means of radar is known to be only a reproduction in black and white.
  • the object of the invention is to improve a display obtained by means of a radar system carried by a carrier in the approach phase to a controlled target area in such a way that details of the target area are observed by people observing or monitoring the target area, such as pilots, captains, skippers, pilots, etc. are significantly easier to identify and interpret.
  • this object is achieved in a method for displaying radar images of a target area to be monitored by the features in the characterizing part of claim 1.
  • a radar system carried by a carrier preferably a so-called forward-looking radar or a so-called sector imaging radar
  • optical images of the targeted area are continuously generated with the help of the data processing system which is also carried along repeating time intervals and the combination images from the received radar images and the overlaid optical images are displayed continuously.
  • an optical image is understood to mean a continuous image of the target area to be monitored, which corresponds to a photographic reproduction, with a continuous image being an image which is prepared in such a way that in such an image only the stationary equipment required for monitoring, such as buildings, is designated and ground or port facilities including the entire flight / taxiway or port are shown.
  • image data originating from different types of image originals can also be underlaid on the radar image.
  • image data originating from different types of image originals can also be underlaid on the radar image.
  • the optical images defined above are particularly particularly suitable.
  • aerial photographs or, if appropriate, maps of the targeted target area are also suitable.
  • optical images of the controlled target area to be superimposed on the radar images are stored in the data processing system. These stored optical images can then be placed as a background at predetermined time intervals on the radar images, whose dimensions are adapted to the optical images. Depending on the viewing angle, the optical images must also be changed in size and viewing angle.
  • the people who monitor the controlled target area detected by the radar for example fixed fixed objects such as buildings, or any other Fixed facilities, including places, areas, edges, if necessary, which are clearly recognizable on the radar image, are easier to interpret as such.
  • the people monitoring the controlled target area can not only very easily, but particularly safely and reliably immediately the respective points appearing on the radar image, for example the edges of buildings already mentioned, etc. identify precisely with regard to their location and thus immediately assign them clearly to each fixed, non-moving target.
  • An advantageous further development of the method according to the invention also consists in storing colored, optical images in the data processing system and thus keeping them ready for retrieval. If such colored optical images, for example as the background, are each matched in their dimensions to suitably adapted radar images, which due to the system, as already mentioned, can only ever be displayed in black and white, an interpretation of the combination images thus obtained and an assignment and identification of distinctive areas, such as edges, transitions, etc. that are particularly clearly highlighted on the radar image improved even further.
  • each radar image, the previously preferably an optical continuous colored image is underlaid as background, all backscattered points are hidden from fixed elements or targets of a scene that are also present in the optical image.
  • all backscattered points of targets not present in the optical image are recorded in the underlaid optical image and are clearly highlighted.
  • combination images created according to the invention can be used to identify moving targets, such as smaller vehicles, transport vehicles, luggage trolleys, barges, smaller ships, excursion boats, etc. or even larger to large vehicles, such as airplanes, ships, etc. not only to be interpreted as such, but at the same time the location or area where the moving objects are located can be identified very precisely.
  • moving targets such as smaller vehicles, transport vehicles, luggage trolleys, barges, smaller ships, excursion boats, etc. or even larger to large vehicles, such as airplanes, ships, etc. not only to be interpreted as such, but at the same time the location or area where the moving objects are located can be identified very precisely.
  • the backscattering of such moving targets in the underlaid, preferably colored optical image can be particularly clearly emphasized by the fact that in the individual radar images all backscattered points of fixed elements, targets, etc. hidden in a scene.
  • the table image does not have existing - targets, both fixed and movable, are reproduced in such a way that a color is assigned to the targets remaining in a scene after the masking of all fixed targets and not available in the optical image.
  • a different color can be assigned to the detected moving targets than “parked” targets and thus appearing to be stationary.
  • both “parked” and moving targets which are not present in different sections of the optical image but are detected by means of the radar system, can be reproduced sector by sector in different colors.
  • a very specific section preferably the central part of the controlled target area of the optical images superimposed radar images, is reproduced with a mode with the highest resolution.
  • the edge areas are only displayed with a lower-resolution mode, which leads to a simplification and reduction of the data processing effort.
  • the section containing the runway which generally corresponds to the central part of the controlled target area, can be radar images superimposed on the optical images of the runway with the highest resolution mode are reproduced.
  • the stripes on both sides of the runway it is generally sufficient to present them in a fashion with a significantly lower resolution.
  • the images obtained and processed by means of the monitoring system carried along are displayed at a repetition rate in the order of magnitude of approximately 10 to 100 Hz.
  • a repetition rate that is between 50 and 100 Hz, pilots, skippers and possibly also the persons performing surveillance perceive the display on the screen of the radar system as a uniform, continuous sequence of radar images due to the inertia of the human eye.
  • the method according to the invention thus creates numerous possibilities for considerably simplifying and improving the interpretation of a radar image not only with regard to moving objects, but possibly also with regard to temporarily or temporarily existing (“parked”) objects or targets, and for identifying such objects or to accomplish goals faster, safer and more reliably.

Landscapes

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

Abstract

Selon l'invention, un système radar couvrant une zone cible à surveiller, telle qu'un aéroport, un port maritime ou un port fluvial, génère des images radar dans la phase d'approche. Ces dernières montrent la zone cible à surveiller, sous forme d'une image prise depuis la position du système radar en mode d'approche. Des images optiques de la zone cible sont superposées, à intervalles répétés et au moyen d'un système de traitement de données embarqué, sur les images radar de ladite zone cible radioralliée générées à l'aide du système radar pendant la phase d'approche. Les images combinées de la zone cible obtenues par superposition des images radar et des images optiques sont représentées en continu. En outre, grâce au système de traitement de données embarqué, des images optiques, incluant éventuellement des images couleur, de la zone cible à surveiller et mémorisées dans ledit système de traitement de données sont insérées, à intervalles prédéfinis, en arrière-plan des images radar dont les dimensions ont été adaptées en fonction de celles des images optiques.
EP99910230A 1998-02-17 1999-02-17 Procede pour representer des images radar d'une zone de cible a surveiller Withdrawn EP1057045A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19806590A DE19806590A1 (de) 1998-02-17 1998-02-17 Verfahren zum Überwachen eines angesteuerten Zielbereichs in der Annäherungsphase
DE19806590 1998-02-17
PCT/EP1999/001027 WO1999042854A1 (fr) 1998-02-17 1999-02-17 Procede pour representer des images radar d'une zone de cible a surveiller

Publications (1)

Publication Number Publication Date
EP1057045A1 true EP1057045A1 (fr) 2000-12-06

Family

ID=7858047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99910230A Withdrawn EP1057045A1 (fr) 1998-02-17 1999-02-17 Procede pour representer des images radar d'une zone de cible a surveiller

Country Status (4)

Country Link
EP (1) EP1057045A1 (fr)
CA (1) CA2322378A1 (fr)
DE (1) DE19806590A1 (fr)
WO (1) WO1999042854A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7619626B2 (en) * 2003-03-01 2009-11-17 The Boeing Company Mapping images from one or more sources into an image for display
US7925391B2 (en) 2005-06-02 2011-04-12 The Boeing Company Systems and methods for remote display of an enhanced image

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179385A (en) * 1992-01-02 1993-01-12 International Marine Industries, Inc. Visual navigation aid with point of interest feature
US5654890A (en) * 1994-05-31 1997-08-05 Lockheed Martin High resolution autonomous precision approach and landing system
SG66213A1 (en) * 1995-01-31 1999-07-20 Mitsubishi Electric Corp Display apparatus for flight control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9942854A1 *

Also Published As

Publication number Publication date
DE19806590A1 (de) 1999-09-02
WO1999042854A1 (fr) 1999-08-26
CA2322378A1 (fr) 1999-08-26

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