CN105738922B - The service reliability analysis method and system of aeronautical satellite constellation systems - Google Patents
The service reliability analysis method and system of aeronautical satellite constellation systems Download PDFInfo
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- CN105738922B CN105738922B CN201510604186.6A CN201510604186A CN105738922B CN 105738922 B CN105738922 B CN 105738922B CN 201510604186 A CN201510604186 A CN 201510604186A CN 105738922 B CN105738922 B CN 105738922B
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- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/20—Integrity monitoring, fault detection or fault isolation of space segment
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Abstract
The present invention relates to a kind of service reliability analysis method of aeronautical satellite constellation systems and system, to solve the problems, such as how to analyze the service reliability of aeronautical satellite constellation systems.This method includes：S1, the service availability for calculating the constellation systems；S2, the average service continuity for calculating all satellites in the constellation systems；S3, according to the service availability and the average service continuity, calculate the service reliability of the constellation systems.The present invention obtains the service reliability of the constellation systems by the service availability for calculating constellation systems and average service continuity, and the calculating process is simple, easily realizes.Moreover, whether the service provided using obtained service reliability measurement aeronautical satellite constellation systems is reliable, the service quality of aeronautical satellite constellation systems is better understood by.
Description
Technical field
The present invention relates to aeronautical satellite constellation systems technical field, and in particular to a kind of service of aeronautical satellite constellation systems
Analysis method for reliability and a kind of service reliability analysis system of aeronautical satellite constellation systems.
Background technology
Aeronautical satellite constellation systems be used for by it is possible it is most economical in a manner of provided to the public and reliably position, navigate, award
When service be PNT service.The service reliability of aeronautical satellite constellation systems refers to the aeronautical satellite constellation systems for health,
Any point in coverage, in predetermined time interval, the instantaneous subscriber pseudorange of aerial signal standard positioning services misses
Difference maintains the percentage of time within defined reliability thresholds, for weighing the service that aeronautical satellite constellation systems are provided
It is whether reliable.
However, the research of related fields is had no at present, to understand the service quality of aeronautical satellite constellation systems, it is necessary to carry
For a kind of service reliability analysis method of aeronautical satellite constellation systems.
The content of the invention
The technical problems to be solved by the invention are how to analyze the service reliability of aeronautical satellite constellation systems.
In order to solve the above technical problems, the present invention proposes a kind of service reliability analysis side of aeronautical satellite constellation systems
Method and system.
In a first aspect, this method includes：
S1, the service availability for calculating the constellation systems；
S2, the average service continuity for calculating all satellites in the constellation systems；
S3, according to the service availability and the average service continuity, the service for calculating the constellation systems is reliable
Property.
Further, the step S1 calculates the service availability by following formula：
Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems in the preset time
The maximum times of unplanned interruption occur, t is the mean repair time of each unplanned interruption.
Further, the step S2 includes：
S21, the average integrity for calculating all satellites in the constellation systems；
S22, according to the average integrity, calculate the average service continuity.
Further, the step S21 calculates the average integrity by following formula：
Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSS
For the maximum times of the unplanned interruption of the constellation systems generation in the preset time.
Further, the step S22 calculates the average service continuity by following formula：
CI=1-I
Wherein, CIFor the average service continuity.
Further, the step S3 calculates the service reliability of the constellation systems by following formula：
RI=AI×CI
Wherein, RIFor the service reliability, AIFor the service availability, CIFor the average service continuity.
Second aspect, the system include：
First computing module, for calculating the service availability of the constellation systems；
Second computing module, for calculating the average service continuity of all satellites in the constellation systems；
3rd computing module, for according to the service availability and the average service continuity, calculating the constellation
The service reliability of system.
Further, first computing module calculates the service availability by following formula：
Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems in the preset time
The maximum times of unplanned interruption occur, t is the mean repair time of each unplanned interruption.
Further, second computing module includes：
First computing unit, for calculating the average integrity of all satellites in the constellation systems；
Second computing unit, for according to the average integrity, calculating the average service continuity.
Further, first computing unit calculates the average integrity by following formula：
Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSS
For the maximum times of the unplanned interruption of the constellation systems generation in the preset time.
The present invention obtains the constellation system by the service availability for calculating constellation systems and average service continuity
The service reliability of system, the calculating process is simple, easily realizes.Obtained service reliability can be used for weighing aeronautical satellite constellation system
Whether the provided service of system is reliable, people is better understood by the service quality of aeronautical satellite constellation systems.
Brief description of the drawings
By reference to accompanying drawing can be more clearly understood the present invention characteristic information and advantage, accompanying drawing be schematically without
It is interpreted as carrying out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 shows the flow of the embodiment of service reliability analysis method one according to aeronautical satellite constellation systems of the present invention
Schematic diagram；
Fig. 2 shows the structure of the embodiment of service reliability analysis system one according to aeronautical satellite constellation systems of the present invention
Block diagram.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Before technical scheme is introduced, the technical term being related to is explained or illustrated first：
(1) service availability, refer at any point in coverage of aeronautical satellite constellation systems, any 24 hours
95% interior, estimated site error of time interval is less than the percentage of time of error threshold.
(2) service continuity, refer within the defined time, healthy standard positioning services aerial signal will continue health
The probability that can be used without producing unplanned interruption, it is assumed that in the standard positioning services aerial signal of initial time be available.
(3) integrity, the size of the confidence level of the information correctness provided aeronautical satellite constellation systems is referred to.It is complete
Good property is included when standard positioning services aerial signal should not be by use, provide alarm in time (early warning and alarm) to receiver
Ability.
Three above technical term is noun well known to those skilled in the art, and each professional art is understood according to above-mentioned definition
The quantitative criteria of language, therefore above-mentioned technical term is not only the description of character property, itself also represents a specific quantized value.
The present invention provides a kind of service reliability analysis method of aeronautical satellite constellation systems, as shown in figure 1, this method bag
Include：
S1, the service availability for calculating the constellation systems；
S2, the average service continuity for calculating all satellites in the constellation systems；
S3, according to the service availability and the average service continuity, the service for calculating the constellation systems is reliable
Property.
Wherein, step S1, there is no sequencing between S2.
When service availability is average value, the service reliability being calculated is average service reliability；When service can
When with property being most bad value, the service reliability being calculated is most bad service reliability.
The present invention obtains the constellation system by the service availability for calculating constellation systems and average service continuity
The service reliability of system, the calculating process is simple, easily realizes.Moreover, weigh aeronautical satellite using obtained service reliability
Whether the service that constellation systems are provided is reliable, is better understood by the service quality of aeronautical satellite constellation systems.
Further, the step S3 can calculate the service reliability of the constellation systems by following formula：
RI=AI×CI
Wherein, RIFor service reliability, AIFor the service availability, CIFor the average service continuity.
Here, the present invention is by establishing the amount between service availability, average service continuity and service reliability three
Change relation, obtain the value of service reliability.
Further, the step S1 can calculate the service availability by following formula：
Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems in the preset time
The maximum times of unplanned interruption occur, t is the mean repair time of each unplanned interruption.
Preset time is the observation period, usually 1 year i.e. 8760 hours.
Generally, 3 unplanned interruption at most occurred in 1 year for constellation systems.
Further, the step S2 may include：
S21, the average integrity for calculating all satellites in the constellation systems；
S22, according to the average integrity, calculate the average service continuity.
Further, the step S21 can calculate the average integrity by following formula：
Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSS
For the maximum times of the unplanned interruption of the constellation systems generation in the preset time.
Further, the step S22 can calculate the average service continuity by following formula：
CI=1-I
Wherein, CIFor the average service continuity.
The present invention also provides a kind of service reliability analysis system of aeronautical satellite constellation systems, as shown in Fig. 2 the system
100 include：
First computing module 101, for calculating the service availability of the constellation systems；
Second computing module 102, for calculating the average service continuity of all satellites in the constellation systems；
3rd computing module 103, for according to the service availability and the average service continuity, calculating the star
The service reliability of base system.
Further, first computing module calculates the service availability by following formula：
Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems in the preset time
The maximum times of unplanned interruption occur, t is the mean repair time of each unplanned interruption.
Further, second computing module 102 includes：
First computing unit 1021, for calculating the average integrity of all satellites in the constellation systems；
Second computing unit 1022, for according to the average integrity, calculating the average service continuity.
Further, first computing unit calculates the average integrity by following formula：
Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSS
For the maximum times of the unplanned interruption of the constellation systems generation in the preset time.
The service reliability analysis system of aeronautical satellite constellation systems of the present invention is aeronautical satellite constellation systems of the present invention
The function structure module of service reliability analysis method, its explanation about content, explanation or beneficial effect refer to the present invention
Appropriate section in the service reliability analysis method of aeronautical satellite constellation systems, will not be repeated here.
In the present invention, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.Term " multiple " refers to two or more, is limited unless otherwise clear and definite.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (8)
- A kind of 1. service reliability analysis method of aeronautical satellite constellation systems, it is characterised in that including：S1, the service availability for calculating by following formula the constellation systems：<mrow> <msub> <mi>A</mi> <mi>I</mi> </msub> <mo>=</mo> <mn>1</mn> <mo>-</mo> <mrow> <mo>(</mo> <mfrac> <mrow> <msub> <mi>N</mi> <mrow> <mi>U</mi> <mi>S</mi> <mi>S</mi> </mrow> </msub> <mo>&times;</mo> <mi>t</mi> </mrow> <mi>&tau;</mi> </mfrac> <mo>)</mo> </mrow> <mo>;</mo> </mrow>Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems generation in the preset time The maximum times of unplanned interruption, t are the mean repair time of each unplanned interruption；S2, the average service continuity for calculating all satellites in the constellation systems；S3, according to the service availability and the average service continuity, calculate the service reliability of the constellation systems.
- 2. according to the method for claim 1, it is characterised in that the step S2 includes：S21, the average integrity for calculating all satellites in the constellation systems；S22, according to the average integrity, calculate the average service continuity.
- 3. according to the method for claim 2, it is characterised in that the step S21 is calculated described average intact by following formula Property：<mrow> <mi>I</mi> <mo>=</mo> <mfrac> <msub> <mi>N</mi> <mrow> <mi>U</mi> <mi>S</mi> <mi>S</mi> </mrow> </msub> <mrow> <mi>&tau;</mi> <mo>&times;</mo> <msub> <mi>N</mi> <mrow> <mi>s</mi> <mi>a</mi> <mi>t</mi> </mrow> </msub> </mrow> </mfrac> </mrow>Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSSFor The maximum times of unplanned interruption occur for the constellation systems in the preset time.
- 4. according to the method for claim 3, it is characterised in that the step S22 calculates the average service by following formula Continuity：CI=1-IWherein, CIFor the average service continuity.
- 5. according to any described method in claim 1-4, it is characterised in that the step S3 calculates the star by following formula The service reliability of base system：RI=AI×CIWherein, RIFor the service reliability, AIFor the service availability, CIFor the average service continuity.
- A kind of 6. service reliability analysis system of aeronautical satellite constellation systems, it is characterised in that including：First computing module, for calculating the service availability of the constellation systems by following formula：<mrow> <msub> <mi>A</mi> <mi>I</mi> </msub> <mo>=</mo> <mn>1</mn> <mo>-</mo> <mrow> <mo>(</mo> <mfrac> <mrow> <msub> <mi>N</mi> <mrow> <mi>U</mi> <mi>S</mi> <mi>S</mi> </mrow> </msub> <mo>&times;</mo> <mi>t</mi> </mrow> <mi>&tau;</mi> </mfrac> <mo>)</mo> </mrow> <mo>;</mo> </mrow>Wherein, AIFor the service availability, τ is preset time, NUSSFor the constellation systems generation in the preset time The maximum times of unplanned interruption, t are the mean repair time of each unplanned interruption；Second computing module, for calculating the average service continuity of all satellites in the constellation systems；3rd computing module, for according to the service availability and the average service continuity, calculating the constellation systems Service reliability.
- 7. system according to claim 6, it is characterised in that second computing module includes：First computing unit, for calculating the average integrity of all satellites in the constellation systems；Second computing unit, for according to the average integrity, calculating the average service continuity.
- 8. system according to claim 7, it is characterised in that first computing unit is calculated described average by following formula Integrity：<mrow> <mi>I</mi> <mo>=</mo> <mfrac> <msub> <mi>N</mi> <mrow> <mi>U</mi> <mi>S</mi> <mi>S</mi> </mrow> </msub> <mrow> <mi>&tau;</mi> <mo>&times;</mo> <msub> <mi>N</mi> <mrow> <mi>s</mi> <mi>a</mi> <mi>t</mi> </mrow> </msub> </mrow> </mfrac> </mrow>Wherein, I is the average integrity, NsatFor the number of the constellation systems Satellite, τ is preset time, NUSSFor The maximum times of unplanned interruption occur for the constellation systems in the preset time.
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| CN106250616B (en) * | 2016-07-29 | 2019-05-24 | 北京空间飞行器总体设计部 | Navigation satellite Constellation availability appraisal procedure based on dynamic reliability estimation |
| CN106405580B (en) * | 2016-09-20 | 2019-03-29 | 北京航空航天大学 | A kind of GNSS continuity appraisal procedure |
| CN106610495B (en) * | 2016-11-18 | 2019-01-08 | 中国航天标准化研究所 | A kind of satellite navigation system availability continuity integrity Allocation method |
| CN106815691A (en) * | 2017-01-26 | 2017-06-09 | 清华大学 | A kind of repeater satellite business demand preprocess method and system |
| CN106940446B (en) * | 2017-03-15 | 2019-11-12 | 北京航空航天大学 | A method and device for evaluating the usability of a satellite navigation system |
| CN112526557A (en) * | 2020-11-26 | 2021-03-19 | 广东星舆科技有限公司 | Method and device for acquiring positioning reliability and computer readable medium |
| CN117784192B (en) * | 2023-11-21 | 2024-11-19 | 中国民用航空总局第二研究所 | Beidou aviation service performance analysis and evaluation method and system |
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| CN104483678B (en) * | 2014-12-04 | 2017-03-01 | 北京航空航天大学 | A kind of many constellations satellite navigation integrity multistage monitoring method of air-ground coordination |
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