Antenna and receiver system with digital beamforming for satellite navigation and communications

Dreher, Achim; Niklasch, N.; Klefenz, F.; Schroth, A.

doi:10.1109/tmtt.2003.814309

Cited by 52 publications

(16 citation statements)

References 12 publications

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“…These factors include the radio pattern’s anisotropy of each antenna element, inaccuracy of the array geometry, the mutual coupling effect, the finite ground-plane effect, mismatches between RF channels, different delays of cable lines, etc. [ 7 , 17 , 18 ].…”

Section: Adaptive Array Anti-jamming Algorithmsmentioning

confidence: 99%

“…It can be seen that the pattern is very rough, because all the non-ideal factors of the antenna array and RF channels are ignored, including position inaccuracy of the array geometry, mutual coupling between antenna elements, finite ground-plane effect, mismatches between RF channels, different delays of cable lines, etc. [ 17 , 18 ]. Thus the plot is not so accurate and can only be used as auxiliary reference.…”

Section: Anti-jamming Experimentsmentioning

confidence: 99%

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An SDR-Based Real-Time Testbed for GNSS Adaptive Array Anti-Jamming Algorithms Accelerated by GPU

Cui

2016

Sensors

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Nowadays, software-defined radio (SDR) has become a common approach to evaluate new algorithms. However, in the field of Global Navigation Satellite System (GNSS) adaptive array anti-jamming, previous work has been limited due to the high computational power demanded by adaptive algorithms, and often lack flexibility and configurability. In this paper, the design and implementation of an SDR-based real-time testbed for GNSS adaptive array anti-jamming accelerated by a Graphics Processing Unit (GPU) are documented. This testbed highlights itself as a feature-rich and extendible platform with great flexibility and configurability, as well as high computational performance. Both Space-Time Adaptive Processing (STAP) and Space-Frequency Adaptive Processing (SFAP) are implemented with a wide range of parameters. Raw data from as many as eight antenna elements can be processed in real-time in either an adaptive nulling or beamforming mode. To fully take advantage of the parallelism resource provided by the GPU, a batched method in programming is proposed. Tests and experiments are conducted to evaluate both the computational and anti-jamming performance. This platform can be used for research and prototyping, as well as a real product in certain applications.

show abstract

Section: Adaptive Array Anti-jamming Algorithmsmentioning

confidence: 99%

Section: Anti-jamming Experimentsmentioning

confidence: 99%

An SDR-Based Real-Time Testbed for GNSS Adaptive Array Anti-Jamming Algorithms Accelerated by GPU

Cui

2016

Sensors

View full text Add to dashboard Cite

show abstract

“…The DBF array is designed for the application of mobile satellite communication [5]. As the phased array antenna scans in wide angle (in the region [−53 • , 53 • ]), the variation of transmission loss in scan range can attain up to 7 dB.…”

Section: Background and Interfacementioning

confidence: 99%

A Semi-Physical Simulation System for DBF Transmitter Array on Leo Satellite

Li¹,

Gong²,

Liu³

et al. 2009

PIER

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Abstract-This paper presents a semi-physical simulation system for 61-channel DBF array transmitter antenna on LEO satellite. It consists of a hardware platform for digital beamfoming network (BFN) and a software simulation system for DBF array. The background and wideband input interface are described, and the signal process of digital beamforming network is discussed in detail. General DFT filter bank, distributed arithmetic (DA) algorithm and Hartley image rejection structure are adopted to design the digital BFN, which make the calculation of BFN reduced by 98.41% and get the multiplier consumption decreased to 7.11%, compared with conventional algorithms. A novel digital BFN hardware platform with distributed structure is designed, which can complete the high speed array signal processing with maximum throughput of 32.025 Gbps. Ultimately, the measurements of semi-physical simulation system show good agreement with the ideal simulation result. The derivation of radiation pattern from energy distribution of earth's surface demonstrates that the DBF array has good performance on beam coverage with equal flux density and satisfies the application in mobile satellite communication.

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“…-Possibility of reconfiguration in orbit [4,5]. This paper presents a digital beamforming transmitter array for mobile satellite communication, which was designed to steer sixteen independent beams with 61 independent channels simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Development of 61-Channel Digital Beamforming (Dbf) Transmitter Array for Mobile Satellite Communication

Li¹,

Gong²,

Liu³

et al. 2009

PIER

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Abstract-An 61-channel digital beamforming transmitter array antenna used in mobile satellite communication is presented in this paper.It can steer 16 beams simultaneously. The interface, architecture and subunits are described in detail. Standard hexagonal array (SHA) and 61-channel RF front ends are designed. Genetic Algorithm is adopted to realize the pattern synthesis with mutiobjective optimization. The signal flow and hardware platform of the digital beamforming network are discussed, which can complete the high speed array signal processing with maximum throughput of 34.16 Gbps. A novel calibration scheme with high feasibility of project implementation is also proposed. The measurements of array antenna match well with simulation result, which validates the rationality and feasibility of the algorithms.

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Antenna and receiver system with digital beamforming for satellite navigation and communications

Cited by 52 publications

References 12 publications

An SDR-Based Real-Time Testbed for GNSS Adaptive Array Anti-Jamming Algorithms Accelerated by GPU

An SDR-Based Real-Time Testbed for GNSS Adaptive Array Anti-Jamming Algorithms Accelerated by GPU

A Semi-Physical Simulation System for DBF Transmitter Array on Leo Satellite

Development of 61-Channel Digital Beamforming (Dbf) Transmitter Array for Mobile Satellite Communication

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