A Modular Approach to Integrity for APNT

Osechas, Okuary; Nossek, Elizabeth; Belabbas, Boubeker; Meurer, Michael

doi:10.33012/2016.14705

Cited by 7 publications

(7 citation statements)

References 0 publications

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“…One way of achieving RNP 0.3 in the absence of GNSS is to place LDACS based ranging sources [6]. Flight trials have shown that, LDACS has a ranging uncertainty of 10 m standard deviation [7], therefore for a given dilution of precision (DOP), LDACS can provide more accurate position solution compared to DME.…”

Section: Figure 3: Functional Work Flowmentioning

confidence: 99%

“…First method is to use LDACS in standalone configuration, and the second method is to combine LDACS with DME to obtain a hybrid position solution. In hybrid configuration, the gradual inclusion of LDACS stations can be exploited by strategically placing them, such that measurements from existing DME ground stations combined with LDACS, provides a position solution matching the performance requirements of RNP 0.3, as suggested for Modular APNT [6].…”

Section: Figure 3: Functional Work Flowmentioning

confidence: 99%

“…Further if weight W [11] is used for individual range measurement, HPE can be computed using equation (6), which is used for HPE computation in this paper. Where, H is given by equation (7).…”

Section: Horizontal Position Error (Hpe)mentioning

confidence: 99%

“…The ranging accuracy of LDACS is so much higher than that of established systems, like DME, that its inclusion in any hybrid position solution will drastically improve error performance. Prior work has shown that the inclusion of LDACS signals in an APNT system has the potential to enable RNP 0.3 services with ground-based transmitters [6]. Note that RNP 0.3 has been cited as one of the long-term goals of APNT development [17].…”

Section: L-band Digital Aeronautical Communications System (Ldacs)mentioning

confidence: 99%

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Demand-based Placement of LDACS Ground Stations to Achieve RNP 0.3 Accuracy for APNT

Kumar¹,

Battista²,

Osechas³

2017

Proceedings of the 2017 International Technical Meeting of the Institute of Navigation

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Regions with dense air traffic has lower separation between aircrafts to maintain the throughput. Terminal area generally requires high throughput and some of the airports need to maintain 3− nmi separation between two aircrafts. To provide 3− nmi separation RNP 0.3 is required. In this paper we propose two possible ways to fulfill RNP 0.3 NSE requirement using LDACS as an alternate system. The first way is to use LDACS in standalone configuration and the other way is to use a hybrid configuration, where position solution is obtained using LDACS combined with DME.The results show that both the proposed methods, standalone and hybrid configuration fulfill RNP 0.3 NSE requirement. Where standalone configuration is more accurate than hybrid, due to the low ranging error of LDACS system. For our analysis the surveillance data for terminal area of Munich and Frankfurt airports were used. In standalone configuration 5 LDACS stations for Frankfurt and 6 LDACS stations for Munich are sufficient to fulfill RNP 0.3 NSE requirement. In hybrid mode both Frankfurt and Munich only need 3 LDACS stations.

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Section: Figure 3: Functional Work Flowmentioning

confidence: 99%

Section: Figure 3: Functional Work Flowmentioning

confidence: 99%

Section: Horizontal Position Error (Hpe)mentioning

confidence: 99%

Section: L-band Digital Aeronautical Communications System (Ldacs)mentioning

confidence: 99%

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Demand-based Placement of LDACS Ground Stations to Achieve RNP 0.3 Accuracy for APNT

Kumar¹,

Battista²,

Osechas³

2017

Proceedings of the 2017 International Technical Meeting of the Institute of Navigation

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“…The introduction of new signals also present an opportunity to remove the legacy or obsolete technologies such as: Non-Directional Beacon (NDB) and VHF Omnidirection Range (VOR) [2]. The new ranging systems can be hybridized with legacy ones into one modular position system enabling a fully redundant system [6], with PBN capabilities.…”

Section: Introductionmentioning

confidence: 99%

New APNT ranging signals as an opportunity for rationalizing ground infrastructure

Battista

Kumar

Osechas

et al. 2018

2018 Integrated Communications, Navigation, Surveillance Conference (ICNS)

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ICAO Annex 10 -Attachment H provides a guidance for a rationalization of conventional radio navigation aids to support Performance-Based navigation. An optimization of terrestrial navigation infrastructure, which includes a rationalization effort and coordinated evolution, is necessary to maintain a sufficient level of safety and operations in case of GNSS outage. This is an opportunity to introduce new signals with better ranging performance. The hybridization of new systems with legacy DME enabling a fully backup navigation system. The hybrid sytems make possible to decommission older radio navigation solutions. In this paper we present our assessment tool: marginal benefit. It is the ratio between potential DME to be decommissioned and the number of new signals deployed.

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Multi-DMEs for alternative position, navigation and timing (A-PNT)

et al. 2021

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Distance measuring equipment (DME/DME) as the main reversionary method provides alternative positioning, navigation and timing (A-PNT) services for use during a Global Navigation Satellite System (GNSS) outage. Considering the geometry limitation of DME/DME, multi-DMEs with better geometry can be used to increase the accuracy and integrity performance of positioning. This paper discusses the opportunities and challenges related to use of multi-DMEs as an alternate source of positioning, navigation and timing. To support the performance for A-PNT, the basic idea is considering the existing installed equipment. In this paper, barometer altimeter and TACAN are used to help improve the performance of A-PNT provided by multi-DMEs both in accuracy and integrity. Based on the database of EUROCONTROL, the test results demonstrate that 79⋅7% of a reference area roughly matching with the continental European locations achieve RNP 1 using multi-DMEs when the DME measurement accuracy is 0⋅2 NM (95%). When the DME measurement accuracy is 0⋅1 NM (95%), 87⋅9% of the reference area can achieve RNP 1 using multi-DMEs. The usage of barometer/TACAN measurements aided multi-DMEs improves the performance of the accuracy and integrity monitoring.

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A Modular Approach to Integrity for APNT

Cited by 7 publications

References 0 publications

Demand-based Placement of LDACS Ground Stations to Achieve RNP 0.3 Accuracy for APNT

Demand-based Placement of LDACS Ground Stations to Achieve RNP 0.3 Accuracy for APNT

New APNT ranging signals as an opportunity for rationalizing ground infrastructure

Multi-DMEs for alternative position, navigation and timing (A-PNT)

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