Aireon's initial on-orbit performance analysis of space-based ADS-B

Garcia, M.; Dolan, John W.; Hoag, Andy

doi:10.1109/icnsurv.2017.8011919

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…Satellite operators are constantly on the look for opportunities to diversify their businesses. An FSS negotiator could be an independent hosted payload similar to Aireon ADS-B payloads installed on the first Iridium Next Satellites [56] or a multifunctional primary payload, providing negotiation as a secondary task on nongeostationary or geostationary satellites. Figure 3 shows an OPM diagram (Object Process Methodology [55]), providing details about possible structures and key high-level functions of the envisioned negotiator.…”

Section: B Negotiator Scenarios For a Particular Existing Satellite mentioning

confidence: 99%

Identifying Retrofitting Opportunities for Federated Satellite Systems

Akhtyamov

Vingerhoeds

Golkar

2019

Journal of Spacecraft and Rockets

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This paper aims at identifying retrofitting possibilities to incorporate existing spacecraft into a network of federated satellite systems. The paper presents a systematic review of possible retrofitting options, such as direct modifications including replacement and addition of interfaces, and indirect modifications through the addition of intermediary federated negotiators. The paper considers existing frequency regulations for the analysis in the technical domain, but does not take into consideration how complex or time-consuming any legislative changes might be. Although the paper concludes that direct modifications of existing satellites are nonfeasible from a technical point of view, it identifies a possible scenario of retrofitting by adding intermediary negotiator satellites. The link budget for the intersatellite link between an existing satellite mission, such as SPOT-6, and a conceptual satellite negotiator was estimated. The work concludes that from a link budget point of view and existing technology, such a configuration can provide a slant range from several hundred to thousands of kilometers. The work defines models for trade-off analysis identifying correlations between satellite negotiator parameters and the number of covered satellites. The paper concludes proposing several possible satellite negotiator architectures and high-level technical requirements based on analysis of characteristics of existing and planned satellites.

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Section: B Negotiator Scenarios For a Particular Existing Satellite mentioning

confidence: 99%

Identifying Retrofitting Opportunities for Federated Satellite Systems

Akhtyamov

Vingerhoeds

Golkar

2019

Journal of Spacecraft and Rockets

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“…Therefore, the space-based ADS-B system has great significance to the development of aviation. Currently, the world's first space-based ADS-B system (Garcia et al, 2017) has been completed by the Aireon Company in the United States. It has provided aircraft surveillance services for multiple countries and regions since 2020.…”

Section: Introductionmentioning

confidence: 99%

“…The existing space-based ADS-B system has a satellite orbit altitude range of 400 to 1,000 km (Carandente and Rinaldi, 2014;Werner et al, 2014;Wu et al, 2016;Vincent and Freitag, 2019;Chen et al, 2020), and the airspace radius covered by a single receiver has increased from 200 km to 1,900 km (Werner et al, 2014;Garcia et al, 2017Garcia et al, , 2018, so the number of aircraft covered by a space-based ADS-B receiver has increased significantly and continues to grow with the expansion of the aviation industry. When a receiver covers too many aircraft, the ADS-B signals transmitted from different aircraft are likely to reach the receiver at the same time, causing their time domain waveforms to overlap with each other.…”

Section: Introductionmentioning

confidence: 99%

A high-precision and efficient algorithm for space-based ADS-B signal separation

Jia

2023

J. Navigation

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Space-based automatic dependent surveillance-broadcast (ADS-B) receivers can cover thousands of aircraft, each transmitting 6 ⋅ 2 signals per second. As a result, ADS-B signals are very prone to overlap. When the number of aircraft covered by a receiver reaches 3,000, about 90 % of the signals will be overlapping. Overlapped signals can reduce the decoding accuracy of receivers, so that aircraft information cannot be accurately transmitted to the air traffic control (ATC) surveillance system, hence threatening aviation flight safety. It is necessary to propose signal separation algorithms for space-based ADS-B systems. An orthogonal projection linear constrained minimum variance (OPLCMV) algorithm is proposed, which can separate two signals simultaneously based on the linearly constrained minimum variance algorithm by exploiting the characteristics of overlapped signals. Compared with the state-of-the-art extended projection algorithm and the fast independent component analysis algorithm, the OPLCMV method has a higher decoding accuracy for multiple overlapping signals with a small direction difference of arrival or frequency shift. Moreover, the OPLCMV algorithm has a low computational complexity when the number of overlapped signal sources is less than seven.

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“…More than a dozen satellites with ADS-B receivers have been launched, such as the GomX (GomX-1, GomX-2, GomX-3 and GomX-4 designed by the GomSpace Company) series satellites (Alminde et al, 2012; Gerhardt et al, 2017), STU-2 (Shanghai Technology University) satellite (Wu et al, 2016), TianTuo-3 (Li et al, 2017) and Iridium-NEXT satellites. Live data from ADS-B receivers on the Iridium-NEXT constellation of 66 satellites with 100% global coverage, including over the North Pole and every ocean, will offer a worldwide ADS-B service (Garcia et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…A feasible method to improve detection probability is to sectorise the footprint by using a multi-beam antenna (Bettray et al, 2013). The Iridium-NEXT satellites, which will host the ADS-B receiver payloads with a uniform seven-beam antenna designed by Aireon, can greatly improve the performance of the space-based ADS-B (Garcia et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Adaptive Multi-beamforming for Space-based ADS-B

Li-hu

et al. 2018

J. Navigation

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We investigate a strategy to address the problem of low aircraft detection probability of space-based Automatic Dependent Surveillance-Broadcast (ADS-B). A nineteen-element hexagonal array and adaptive multi-beamforming method is proposed. This method aims to adjust the beam pattern dynamically to reduce signal collision and enlarge coverage. With the focus on the mission requirement of global aircraft detection by 2020, the appropriate gain and direction of beams are studied and designed in detail. Theoretical analysis and simulations show that this adaptive multi-beam antenna can greatly improve flight detection probability at an average reporting interval from 10 seconds to 5 seconds when compared with the traditional fixed multi-beam antenna. The results of this work show that the design of a 19-element antenna along with the adaptive multi-beamforming method can be considered as a building block of future space-based ADS-B.

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Aireon's initial on-orbit performance analysis of space-based ADS-B

Cited by 8 publications

References 8 publications

Identifying Retrofitting Opportunities for Federated Satellite Systems

Identifying Retrofitting Opportunities for Federated Satellite Systems

A high-precision and efficient algorithm for space-based ADS-B signal separation

Adaptive Multi-beamforming for Space-based ADS-B

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