EP0200787A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
System for displaying warning zone or menacing aircraft in an apparatus for preventing collision on aircraft
Assignee: Toyo Communication Equipment Co Ltd
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Filing: 1985-10-17
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Granted: —
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Expires: 2005-10-17
Abstract
Abstract A system for displaying a warning zone or menacing aircraft in an apparatus for preventing collision of aircraft, which simply and inexpensively offers data necessary for safety navigation of aircraft, in relation to the warning zone of aircraft, as well as positions and flying paths of other aircraft approaching with probability of collision. The system easily and inexpensively offers data necessary for safety navigation of aircraft, in relation to the warning zone of aircraft, positions and flying paths of other aircraft approaching with probability of collision, by changing the shape of the warning zone to a required shape depending upon the speed of own aircraft, and by changing the range of displaying menacing aircraft depending upon the ascending angle or descending angle of own aircraft, and displaying the detected data on the distance and azimuth of other aircraft in terms of a predetermined afterglow time.
Inventors
- 👤 Chuhei Funatsu
- 👤 Kazuyuki Kita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/25; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/064; G01S7/066; G08G5/21; G08G5/50; G08G5/53; G08G5/55; G08G5/70; G08G5/72; G08G5/723
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that a range of the airspace where collision of a subject aircraft against said other aircraft is to be warned is changed in response to speed of said subject aircraft.
Claim 2
Dependent Claim
78 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that a range of the airspace where collision of a subject aircraft against said other aircraft is to be warned is changed in response to speed of said subject aircraft.
Claim 3
Dependent Claim
68 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 1, characterized in that indication of said range of the airspace where collision of said subject aircraft against said other aircraft is to be warned is a circle the diameter of which expands and contracts along the flight direction of said subject aircraft dependent upon speed of said subject aircraft.
Claim 4
Dependent Claim
101 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 1, characterized in that indication of said range of the airspace where collision of said subject aircraft against said other aircraft is to be warned is such a profile defined by connecting the outer circumference of a circle centering around said subject aircraft with a prescribed radius with the outer circumference of another circle which passes through the center of the former circle and the diameter of which expands and contracts along the flight direction of said subject aircraft dependent upon speed thereof.
Claim 5
Dependent Claim
137 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that an angle of climb or dive 8 of said subject aircraft, a relative distance Y and an altitude difference Δ H between said subject and other aircraft are detected, so that either only said other aircraft the Δ H of which is within a range of γθ ± h (where h is a prescribed altitude) are judged to indicate them as threatening aircraft in said indicating system for threatening aircraft, or these threatening aircraft are indicated by a different manner from that for indicating the other surrounding aircraft.
Claim 6
Dependent Claim
137 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that an angle of climb or dive 8 of said subject aircraft, a relative distance Y and an altitude difference Δ H between said subject and other aircraft are detected, so that either only said other aircraft the Δ H of which is within a range of γθ ± h (where h is a prescribed altitude) are judged to indicate them as threatening aircraft in said indicating system for threatening aircraft, or these threatening aircraft are indicated by a different manner from that for indicating the other surrounding aircraft.
Claim 7
Dependent Claim
40 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 4, characterized in that a prescribed altitude h is variable dependent upon a relative distance Y of said subject to other aircraft.
Claim 8
Dependent Claim
53 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 4, characterized in that when a relative distance Y of said subject to other aircraft is larger than a prescribed value, said other aircraft within said range of γθ h are indicated as threatening aircraft.
Claim 9
Dependent Claim
51 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 4, characterized in that said range for indicating threatening aircraft in respect of said other aircraft within said range of γθ ± h is variable in response to speed of said subject aircraft.
Claim 10
Dependent Claim
55 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 4, characterized in that unlike the other aircraft, said threatening aircraft are indicated in said indicating system for threatening aircraft by means of either different color tone from that for indicating said other aircraft, or flicker display.
Claim 11
Dependent Claim
99 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that response signals of the ATC transponders mounted on said other aircraft are received to detect distances and bearings of said other aircraft with respect to said subject aircraft, and at the same time the detected data are indicated in said indicating system for threatening aircraft with a required afterglow time.
Claim 12
Dependent Claim
99 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that response signals of the ATC transponders mounted on said other aircraft are received to detect distances and bearings of said other aircraft with respect to said subject aircraft, and at the same time the detected data are indicated in said indicating system for threatening aircraft with a required afterglow time.
Claim 13
Dependent Claim
78 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 9, characterized in that interrogation is delivered without directivity from an interrogator mounted on said aircraft collision avoidance system loaded on said subject aircraft to the ATC transponders loaded on said other aircraft, and at the same time the response signals are received by an array antenna, whereby relative distances and bearings of said subject to other aircraft are detected.
Claim 14
Dependent Claim
97 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 9, characterized in that interrogation is delivered with directivity from said interrogator mounted on said aircraft collision avoidance system loaded on said subject aircraft to the ATC transponders loaded on said other aircraft, at the same time, the response signals are expected by a directional antenna for a required period of time, and reception of such response signals with respect to interrogation from interrogation stations other than the interrogator of said subject aircraft is reduced as much as possible.
Claim 15
Dependent Claim
66 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claim 9, characterized in that an afterglow time for indicating the detected data relating to distances and bearings of said other aircraft with respect to said subject aircraft in said indicating system for threatening aircraft is controlled in response to number of other aircraft indicated in said indicating system.
Claim 16
Dependent Claim
100 words
An indicating system for warning airspace or threatening aircraft in aircraft collision avoidance system as claimed in claims 9, 10, 11, and 12, characterized in that a required threshold is established dependent upon reception level of response signals from the ATC transponders mounted on said other aircraft or before a period of time from transmission of interrogation signal to reception of response signals, and at the same time a range for indication with said required threshold in said indicating system which indicates bearings and distances with respect to said subject aircraft is expanded and contracted in relation to said establishment.
Claim 17
Dependent Claim
132 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that a range obtained by changing horizontal airspace where aircraft collision should be warned with respect to said subject aircraft in response to speed thereof is mutually switched over another range wherein an angle of climb or dive 8 of said subject aircraft, a relative distance Y and an altitude difference A H between said subject and other aircraft are detected, and said A H is within.a range of γθ ± h (where h is a prescribed altitude) to scan existence of threatening aircraft.
Claim 18
Dependent Claim
132 words
In a warning airspace indicating system belonging to an aircraft collision avoidance system having function to decide existence of danger of aircraft collision by receiving response signals delivered from other aircraft, an indicating system for warning airspace or threatening aircraft in said aircraft collision avoidance system characterized in that a range obtained by changing horizontal airspace where aircraft collision should be warned with respect to said subject aircraft in response to speed thereof is mutually switched over another range wherein an angle of climb or dive 8 of said subject aircraft, a relative distance Y and an altitude difference A H between said subject and other aircraft are detected, and said A H is within.a range of γθ ± h (where h is a prescribed altitude) to scan existence of threatening aircraft.
References Cited (Backward Citations)
No citation records indexed.
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