CN109841094A - A kind of forward sight alarm envelope curve modulator approach considering RNP and flight plan information - Google Patents
A kind of forward sight alarm envelope curve modulator approach considering RNP and flight plan information Download PDFInfo
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- CN109841094A CN109841094A CN201711217491.5A CN201711217491A CN109841094A CN 109841094 A CN109841094 A CN 109841094A CN 201711217491 A CN201711217491 A CN 201711217491A CN 109841094 A CN109841094 A CN 109841094A
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Abstract
The invention discloses the forward sights of a kind of consideration RNP and flight plan information to alert envelope curve modulator approach, comprises the following steps: 1, obtaining aircraft status information, RNP information, flight plan information, forward sight alarm envelope curve information；2, judge aircraft whether within the scope of RNP；3, judge to switch in forward sight alarm envelope curve with the presence or absence of segment；4, forward sight is modulated according to flight plan situation of change and alerts envelope curve；5, judge whether forward sight alarm envelope curve exceeds RNP range；6, envelope curve is alerted according to RNP coverage modulation forward sight.The present invention solves the problems, such as that existing ground proximity warning system does not account for RNP operation and flight plan information and leads to false-alarm and false dismissal, is modulated to forward sight alarm envelope curve, improves Distal promoter performance, effective guarantee flight safety.
Description
Technical field
The present invention relates to a kind of Distal promoter technology, especially a kind of forward sight for considering RNP and flight plan information is accused
Alert envelope curve modulator approach.
Background technique
Ground proximity warning system (GPWS) obtains data from each information source, and aircraft is before entering danger area, and the system is just
It can be given a warning to unit, avoid that aircraft occurs in the case where pilot's still effectively control aircraft in the bad weathers such as misty rain
It hits ground or hits the accident on mountain.The civil aircraft in the whole world is assembled with plain edition GPWS at present, this subtracts controlled ground accident of hitting obviously
It is few, but still have the generation of accident.In order to solve this problem, it is proposed enhanced ground proximity warning system (EGPWS).EGPWS
Aircraft, which can be detected, to be had with surrounding terrain when conflicting, and aircraft system before entering danger area will give a warning to unit.
Required navigation performance (RNP) is defined as aircraft and runs when institute in determining air route, airspace or a region
The navigation performance precision needed.RNP specification in, used tunnel concept come quantitative description aircraft from take off, climb, cruising, under
The specific requirement for all mission phases for dropping, marching into the arena and landing, i.e., each mission phase have an illusory tunnel, it is provided
The female surface of the mission phase flight path circumference, aircraft and its navigation performance, airmanship must satisfy the mission phase
Required navigation performance.More accurate, the airport particularly suitable for mountain area complicated landform, IFR conditions of RNP navigation.
Currently, EGPWS is the standard configuration of Boeing and Airbus Aircraft.China Civil Aviation Administration requirement, from January 1st, 2005
It rises, domestic all maximum authorization take-off weights are more than 15000 kilograms or visiting number is more than 30 turbogenerator aircraft, Dou Yaoan
Fill EGPWS system.But it may be detected on airport with a varied topography as Fromlingzhi, tibet since EGPWS is detection front
Aircraft flies to mountain and proposes alarm out, and actually getting off the plane shortly turn round in RNP navigation turns to mountain valley, therefore
It is easy to produce false-alarm in the case of complicated landform, interferes normal flight operations；In addition, EGPWS is according only to aircraft current state at present
To front terrain detection, actual flight plan information is not considered, and when front segment, switching causes air route to there is turning
When, it is easy to produce false-alarm, while being difficult to detect the air route landform after turning, to generate false dismissal, influences crew
To the reliability of the system.
Summary of the invention
In order to change do not accounted for present in state of the art RNP operation and flight plan information lead to forward sight near-earth
False-alarm and false dismissal problem are alerted, the forward sight alarm envelope curve modulator approach of a kind of consideration RNP and flight plan information is provided, improves
Distal promoter performance, effective guarantee flight safety.
Goal of the invention of the invention is achieved by the following technical solution: a kind of to consider RNP and flight plan information
Forward sight alerts envelope curve modulator approach, comprises the following steps:
Step 1 obtains aircraft status information, RNP information, flight plan information, forward sight alarm envelope curve information；
Step 2 judges aircraft according to aircraft status information, RNP information whether within the scope of RNP, if yes then enter step 3,
Otherwise output forward sight alerts envelope curve and enters step 7；
Step 3 judges in forward sight alarm envelope curve according to aircraft position, flight plan and forward sight alarm envelope curve with the presence or absence of segment
Switching, if yes then enter step 4, otherwise enters step 5;
Step 4 modulates forward sight alarm envelope curve according to flight plan situation of change；
Step 5 alerts envelope curve and RNP range according to forward sight and judge that forward sight alerts whether envelope curve exceeds RNP range, if it is into
Enter step 6, otherwise envelope curve is constant enters step 7 for forward sight alarm；
Step 6 alerts envelope curve according to RNP coverage modulation forward sight；
Step 7, the modulated forward sight of output alert envelope curve；
Wherein, aircraft status information includes the position of aircraft, horizontal practical navigation performance (ANP), vertical ANP, yaw away from, vertically
Deviation；RNP information includes horizontal RNP, vertical RNP；Flight plan information includes the position of each way point in flight plan, boat
The course of section；It includes bandwidth, the lower apparent distance, forward sight distance that forward sight, which alerts envelope curve,.
Preferably, aircraft status information, RNP information, flight plan information are obtained from flight management system (FMS) in step 1
It takes, forward sight alerts envelope curve information and obtains from EGPWS；
Preferably, judge in step 2 aircraft whether the method within the scope of RNP are as follows:
By the horizontal ANP of aircraft with yaw away from being added to obtain horizontal Total System Error TSE1, by aircraft vertical ANP and vertical missing phase
Add to obtain vertical Total System Error TSE2, if TSE1 < horizontal RNP, and TSE2 < vertical RNP, then aircraft is within the scope of RNP；
Preferably, the method in forward sight alarm envelope curve with the presence or absence of segment switching is judged in step 3 are as follows:
Distance To Go D1 is found out according to the position of aircraft position and current way point, the forward sight distance of envelope curve is alerted according to forward sight
D2, if D1 < D2, there are segment switchings in forward sight alarm envelope curve；
Preferably, the method for forward sight alarm envelope curve being modulated according to flight plan situation of change in step 4 are as follows:
Forward sight is alerted into envelope curve, front and back two parts are cut into the vertical plane of current leg terminating point, first half indicates aircraft to boat
Alarm envelope curve between section terminating point, latter half indicate segment terminating point to the alarm envelope curve between forward sight alarm sideline；Root
According to the course of current leg and the course of next segment, course variable quantity a is found out, latter half alarm envelope curve is terminated along segment
The plumb line of point rotates a；First half alarm envelope curve is connected with postrotational latter half alarm envelope curve, is obtained modulated
Alert envelope curve；
Preferably, judge whether forward sight alarm envelope curve exceeds the method for RNP range in step 5 are as follows:
By bandwidth and the aircraft yaw of forward sight alarm away from being added to obtain D, the lower apparent distance and aircraft vertical deviation that forward sight is alerted
Addition obtains H, if D > horizontal RNP or H > vertical RNP, forward sight alerts envelope curve and exceeds RNP range；
Preferably, the method for envelope curve being alerted according to RNP coverage modulation forward sight in step 6 are as follows:
The forward sight alarm envelope curve that will exceed outside RNP envelope is cut away, and the forward sight retained within the scope of RNP alerts envelope curve.
The beneficial effects of the present invention are: consider RNP alarm range and flight plan situation, near-earth can be provided well
Alarm, as much as possible reduction false alarm rate and reduction false dismissal, improve Distal promoter performance, reduce the generation for controllably hitting ground accident, have
Effect ensures flight safety.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention.
Fig. 2 is the schematic diagram of RNP operation level and vertical section.
Fig. 3 is the schematic diagram for the horizontal and vertical section that forward sight alerts envelope curve.
Fig. 4 is to modulate the schematic diagram that forward sight alerts envelope curve according to flight plan situation of change.
Fig. 5 is the schematic diagram that envelope curve is alerted according to RNP coverage modulation forward sight.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made with reference to the accompanying drawing further
Detailed description.
A kind of forward sight alarm envelope curve modulator approach considering RNP and flight plan information utilizes aircraft shape as shown in Fig. 1
State information, RNP information, flight plan information, forward sight alert envelope curve information, consider that RNP range and flight plan situation of change are real
Now to the modulation of forward sight alarm envelope curve.As shown in Figure 2 and Figure 3, aircraft status information includes the position 201 of aircraft, horizontal actually leads
Navigate performance (ANP) 202, and vertical ANP203, yaw are away from 204, vertical missing 205；RNP information includes horizontal RNP 206, vertical
RNP 207；Flight plan information includes the course 210 of the position 208 and 209 of each way point in flight plan, segment；Forward sight
Alerting envelope curve includes bandwidth 211, the lower apparent distance 212, forward sight distance 213.Specific step is as follows:
Step 1 obtains aircraft status information, RNP information, flight plan information, forward sight alarm envelope curve information.
Aircraft status information, RNP information, flight plan information are obtained from flight management system (FMS), and forward sight alerts envelope curve
Information is obtained from EGPWS.
Step 2 judges aircraft whether within the scope of RNP according to aircraft status information, RNP information, if yes then enter step
Rapid 3, it otherwise exports forward sight alarm envelope curve and enters step 7.
Judge aircraft whether the method within the scope of RNP are as follows:
By the horizontal ANP of aircraft with yaw away from being added to obtain horizontal Total System Error TSE1, by aircraft vertical ANP and vertical missing phase
Add to obtain vertical Total System Error TSE2, if TSE1 < horizontal RNP, and TSE2 < vertical RNP, then aircraft is within the scope of RNP.
Step 3 judges to whether there is in forward sight alarm envelope curve according to aircraft position, flight plan and forward sight alarm envelope curve
Segment switching, if yes then enter step 4, otherwise enters step 5.
Judge the method in forward sight alarm envelope curve with the presence or absence of segment switching are as follows:
Distance To Go D1 is found out according to the position of aircraft position and current way point, the forward sight distance of envelope curve is alerted according to forward sight
D2, if D1 < D2, there are segment switchings in forward sight alarm envelope curve.
Step 4 modulates forward sight alarm envelope curve according to flight plan situation of change；
It is according to the method that flight plan situation of change modulates forward sight alarm envelope curve.
As shown in figure 4, forward sight alarm envelope curve is cut into front and back two parts with the vertical plane 214 of current leg terminating point, it is preceding
Half part 215 indicates aircraft to the alarm envelope curve between the terminating point of segment, the expression segment terminating point of latter half 216 to forward sight announcement
Alarm envelope curve between alert sideline；According to the course in the course of current leg and next segment, find out course variable quantity a, will after
Half part alerts envelope curve and rotates a along the plumb line of segment terminating point；First half is alerted into envelope curve and postrotational latter half
Envelope curve connection is alerted, modulated alarm envelope curve 217 is obtained.
Step 5 judges whether forward sight alarm envelope curve exceeds RNP range according to forward sight alarm envelope curve and RNP range, if it is
6 are then entered step, otherwise envelope curve is constant enters step 7 for forward sight alarm.
Judge whether forward sight alarm envelope curve exceeds the method for RNP range are as follows:
As shown in figure 5, being added the bandwidth 211 that forward sight alerts to obtain D away from 204 with aircraft yaw, the lower sighting distance that forward sight is alerted
It is added to obtain H with aircraft vertical deviation 205 from 212, if D > horizontal RNP or H > vertical RNP, forward sight alarm envelope curve exceeds
RNP range.
Step 6 alerts envelope curve according to RNP coverage modulation forward sight.
Envelope curve method is alerted according to RNP coverage modulation forward sight are as follows:
The forward sight alarm envelope curve that will exceed outside RNP envelope is cut away, and the forward sight retained within the scope of RNP alerts envelope curve.Such as Fig. 5 institute
Show, hatched example areas 218 and 219 is above the alarm envelope curve of the forward sight outside RNP envelope, needs to cut away, retain inside RNP range
Alarm envelope curve.
Step 7, the modulated forward sight of output alert envelope curve.
Claims (7)
1. a kind of forward sight for considering RNP and flight plan information alerts envelope curve modulator approach, which is characterized in that include following step
Suddenly,
Step 1, aircraft status information, RNP information, flight plan information, forward sight alarm envelope curve letter are obtained wherein, aircraft state letter
Breath includes the position of aircraft, horizontal ANP, and away from, vertical missing, RNP information includes horizontal RNP, vertical RNP for vertical ANP, yaw,
Flight plan information includes the course of the position, segment of each way point in flight plan, forward sight alarm envelope curve include bandwidth, under
The apparent distance, forward sight distance；
Step 2, according to aircraft status information and RNP information, aircraft is judged whether within the scope of RNP, if it is, entering step
3；Otherwise, 7 are entered step；
Step 3, according to the position of aircraft, flight plan information and forward sight alert envelope curve, judge forward sight alarm envelope curve in whether
There are segment switchings, if it is, entering step 4；Otherwise, 5 are entered step；
Step 4, it according to flight plan situation of change, modulates forward sight and alerts envelope curve；
Step 5, envelope curve is alerted according to RNP range and forward sight, judges whether forward sight alarm envelope curve exceeds RNP range, if it is,
Enter step 6；Otherwise, forward sight alarm envelope curve is constant, enters step 7；
Step 6, it according to RNP range, modulates forward sight and alerts envelope curve；
Step 7, output forward sight alerts envelope curve.
2. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 1, aircraft status information, RNP information, flight plan information are obtained from flight management system (FMS), forward sight
Envelope curve information is alerted to obtain from the approaching warning system EGPWS in ground.
3. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 2, judge aircraft whether the method within the scope of RNP are as follows: by the horizontal ANP of aircraft with yaw away from being added to obtain
Aircraft vertical ANP is added to obtain vertical Total System Error TSE2 with vertical missing, if TSE1 by horizontal Total System Error TSE1
< horizontal RNP, and TSE2 < vertical RNP, then aircraft is within the scope of RNP.
4. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 3, judges the method in forward sight alarm envelope curve with the presence or absence of segment switching are as follows: according to aircraft position and currently
The position of way point finds out Distance To Go D1, and the forward sight distance D2 of envelope curve is alerted according to forward sight, if D1 < D2, forward sight alarm
There are segment switchings in envelope curve.
5. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 4, according to flight plan situation of change modulate forward sight alarm envelope curve method are as follows: by forward sight alert envelope curve with
The vertical plane of current leg terminating point is cut into front and back two parts, and first half indicates aircraft to the alarm packet between the terminating point of segment
Line, latter half indicate segment terminating point to the alarm envelope curve between forward sight alarm sideline；According to the course of current leg under
The course of one segment finds out course variable quantity a, and the plumb line by latter half alarm envelope curve along segment terminating point rotates a；Will before
Half part alerts envelope curve and connects with postrotational latter half alarm envelope curve, obtains modulated alarm envelope curve.
6. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 5, judges whether forward sight alarm envelope curve exceeds the method for RNP range are as follows: by the bandwidth and aircraft of forward sight alarm
Yaw obtains D away from addition, and the lower apparent distance that forward sight alerts is added to obtain H with aircraft vertical deviation, if D > horizontal RNP, or
H > vertical RNP, then forward sight alarm envelope curve exceeds RNP range.
7. a kind of forward sight for considering RNP and flight plan information according to claim 1 alerts envelope curve modulator approach, special
Sign is, in step 6, according to the method for RNP coverage modulation forward sight alarm envelope curve are as follows: will exceed the forward sight outside RNP envelope
Alarm envelope curve is cut away, and the forward sight retained within the scope of RNP alerts envelope curve.
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Application publication date: 20190604 |