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Implementation of fast independent component analysis on field‐programmable gate array for resolving the slot collision issue in the space‐based automatic identification system
International Journal of Satellite Communications and Networking ( IF 1.7 ) Pub Date : 2020-07-29 , DOI: 10.1002/sat.1362
Adithya Krishna 1 , Akshay Nimbal 1 , Adarsh Makam 1 , V Sambasiva Rao 1
Affiliation  

The space‐based automatic identification system (S‐AIS) is a maritime safety and vessel monitoring system used to broadcast the ship position and other telemetry every few seconds in short bursts. A satellite‐based AIS receiver is of interest to defense community as it provides global or wide‐area coverage. However, when the satellite passes regions with elevated traffic density, a major challenge is to overcome the message or signal interference at the satellite receiver. This paper mainly focuses on developing a novel AIS satellite receiver that uses fast independent component analysis (FastICA) blind source separation technique to resolve the overlapped signals at the satellite. We propose an architecture to realize FastICA algorithm on hardware. In addition to this, we present Gaussian minimum shift keying modulator and demodulator design schemes used by the S‐AIS transponders. The proposed framework is realized on Virtex5‐xc5vlx110t field‐programmable gate array. The results obtained validate the effectiveness of the FastICA architecture realized by recovering the original ship data from the overlapped signals.

中文翻译:

在现场可编程门阵列上实现快速独立成分分析以解决空基自动识别系统中的插槽碰撞问题

天基自动识别系统(S‐AIS)是海上安全和船只监视系统,用于每隔几秒钟短时间广播船舶位置和其他遥测信息。卫星界对基于卫星的AIS接收器很感兴趣,因为它可以提供全球或广域覆盖。但是,当卫星经过交通密度较高的区域时,主要的挑战是克服卫星接收器上的消息或信号干扰。本文主要致力于开发一种新颖的AIS卫星接收机,该接收机使用快速独立分量分析(FastICA)盲源分离技术来解决卫星上的重叠信号。我们提出了一种在硬件上实现FastICA算法的体系结构。除此之外,我们介绍了S‐AIS应答器使用的高斯最小频移键控调制器和解调器设计方案。该框架是在Virtex5-xc5vlx110t现场可编程门阵列上实现的。获得的结果验证了通过从重叠信号中恢复原始船舶数据而实现的FastICA体系结构的有效性。
更新日期:2020-10-05
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