Aireon space based ADS-B performance model

Garcia, M.; Stafford, James; Minnix, Jay; Dolan, John W.

doi:10.1109/icnsurv.2015.7121219

Cited by 20 publications

(9 citation statements)

References 7 publications

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“…Since our goal is to achieve global surveillance, the detection probability and refresh rate should be high. The theoretical minimum aggregate average P d necessary to support a detection probability P UI within time T UI can be computed as follows (Garcia et al, 2015): where f position , tx = 2 Hz is the transmission rate of ADS-B position messages.…”

Section: Global Aircraft Detection Analysismentioning

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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Section: Global Aircraft Detection Analysismentioning

confidence: 99%

Adaptive Multi-beamforming for Space-based ADS-B

Li-hu

et al. 2018

J. Navigation

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“…2 One order overlap situation Take O1 situation for instance as shown in Fig.2. T1, T2, T3 is three independent random variables and obey the distribution described by (1). O1 situation occurs when T1 > 120µs, T2 < 120µs and T3 > 120µs.…”

Section: Collision Patternmentioning

confidence: 99%

“…Although there are several links associated with ADS-B, 1090 Extended Squitter (1090ES) is the most common equipage, particularly amongst airline operators and others that fly above 18,000 ft. [1]. Terrestrialbased ADS-B technique faces the signal collision problem because this system is a burst communication system that doesn't have time slots allocation.…”

Section: Introductionmentioning

confidence: 99%

Blind Signal Separation Algorithm for Space-based ADS-B

Liu¹,

Zhang²,

Ding³

2016

Proceedings of the 2016 International Conference on Mechatronics Engineering and Information Technology

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Abstract. Automatic Dependent Surveillance Broadcast (ADS-B) is a main technology for AirTraffic Management (ATM). As a trend of aerial surveillance, space-based ADS-B uses satellite to receive ADS-B signals to realize aerial surveillance globally. The space-based ADS-B has a series of new features that Terrestrial-based doesn't have including wider coverage, lower SNR, less power difference between signals. These new features make ADS-B signals collisions at the receiver more severe. This paper proposes a model of ADS-B signals collision pattern at the satellite based on poisson process model. This model makes the separation algorithm focus on several collision situations. This paper proposes the iterative projecting algorithm (IPA). IPA uses iteration and projecting algorithm which has less computation complexity and is more suitable for the hardware to perform. Through simulation IPA has similar performance but much lower complexity compared with other ADS-B BSS algorithms in satellite channel. IntroductionADS-B is a proven technique that is used in aviation management and surveillance. Although there are several links associated with ADS-B, 1090 Extended Squitter (1090ES) is the most common equipage, particularly amongst airline operators and others that fly above 18,000 ft. [1]. Terrestrialbased ADS-B technique faces the signal collision problem because this system is a burst communication system that doesn't have time slots allocation. When two or more signals overlap at the receiver antenna, demodulated module will generate large error codes. This will reduce system efficiency. Terrestrial-based system has a relatively limited coverage about 200nm, so the signals collision is a low probability event. Moreover the distance from different planes to the same ground station has a distinct difference so signals colliding at the receiver have a distinct power difference. A lower power signal will scarcely impact the signal with higher power level because of the receiver's dynamic minimum triggering level mechanism [2].Space-based ADS-B has obvious difference with terrestrial-based system. It remains the equipment on the planes but utilizes LEO satellites to receive 1090ES signals. Satellite coverage area contains a large amount of planes (e.g. Iridium Next equipped with ADS-B receivers support more than 3000 planes in a coverage area). Collisions of signals are quite severe in this situation. This paper will investigate the relationship between the amounts of planes with the collision pattern. An overlapping model is proposed to make the separation algorithm focus more on the main overlapping situation. Different planes in the satellite coverage almost have the same distance to the satellite so it is hardly to pick signal out using the power difference feature like ground receive station. Furthermore small difference of direction of arrival (DOA) of signals and the limited computation performance of satellite platform also restrict the separation algorithm efficiency.To solve the above problem, 1090ES signals o...

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“…There have been some ADS-B constellation projects carried out recently. Iridium-Next is the first and the only deployed SCN system that carries ADS-B receivers, named AIREON (Noschese et al, 2011;Garcia et al, 2015Garcia et al, , 2017. At the time of writing, 75 satellites of the project had been successfully launched into orbit as scheduled, of which 66 satellites are operative and nine are used as backup.…”

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confidence: 99%

“…At the time of writing, 75 satellites of the project had been successfully launched into orbit as scheduled, of which 66 satellites are operative and nine are used as backup. The performance of ADS-B on Iridium-Next has been modeled and preliminarily verified on-board (Garcia et al, 2015(Garcia et al, , 2017. China has also conducted a space-based air traffic surveillance research project since 2016, which is aimed at establishing a simulation and experiment platform (MOST, 2016), although the construction of ADS-B satellite constellation systems has not yet been carried out.…”

mentioning

confidence: 99%

Design of a Low Earth Orbit Satellite Constellation Network for Air Traffic Surveillance

et al. 2020

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The satellite constellation with automatic dependent surveillance-broadcast on-board is of great importance for air traffic surveillance due to its multiple advantages compared with traditional methods. Although some research has been conducted on satellite constellation design based on coverage performance, the findings cannot entirely satisfy all the requirements of air traffic surveillance owing to the lack of analysis on inter-satellite links and network transmission. This paper presents a novel design of a low earth orbit satellite constellation network to solve this problem. Based on the requirements of space-based surveillance, an evaluation model of constellation performance is proposed concerning coverage, link and transmission. The simulation results show that the evaluation model can reflect the performance of a satellite constellation network designed for a space-based surveillance system, and a 55-satellite constellation design scheme with fairly good performance can fulfil the function of global real-time air traffic surveillance.

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Aireon space based ADS-B performance model

Cited by 20 publications

References 7 publications

Adaptive Multi-beamforming for Space-based ADS-B

Adaptive Multi-beamforming for Space-based ADS-B

Blind Signal Separation Algorithm for Space-based ADS-B

Design of a Low Earth Orbit Satellite Constellation Network for Air Traffic Surveillance

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