Whipple Adam, Ruzindana Mark W, Burnett Mitchell C, Kunzler Jakob W, Lyman Kayla, Jeffs Brian D, Warnick Karl F
Electrical & Computer Engineering, Brigham Young University, Provo, UT 84602, USA.
Breakthrough Listen Project, U.C. Berkeley, Berkeley, CA 74707, USA.
Sensors (Basel). 2023 Jul 21;23(14):6584. doi: 10.3390/s23146584.
Wideband beamforming and interference cancellation for phased array antennas requires advances in signal processing algorithms, software, and specialized hardware platforms. A high-throughput array receiver has been developed that enables communication in radio frequency interference-rich environments with field programmable gate array (FPGA)-based frequency channelization and packetization. In this study, a real-time interference mitigation algorithm was implemented on graphics processing units (GPUs) contained in the data pipeline. The key contribution is a hardware and software pipeline for subchannelized wideband array signal processing with 150 MHz instantaneous bandwidth and interference cancellation with a heterogeneous, distributed, and scaleable digital signal processing (DSP) architecture that achieves 30 dB interferer cancellation null depth in real time with a moving interference source.
相控阵天线的宽带波束形成和干扰消除需要信号处理算法、软件和专用硬件平台方面的进展。已经开发出一种高吞吐量阵列接收器，它能够通过基于现场可编程门阵列（FPGA）的频率信道化和分组化在射频干扰丰富的环境中进行通信。在本研究中，一种实时干扰缓解算法在数据管道中包含的图形处理单元（GPU）上得以实现。关键贡献在于一个硬件和软件管道，用于子信道化宽带阵列信号处理，其瞬时带宽为150 MHz，并采用异构、分布式且可扩展的数字信号处理（DSP）架构进行干扰消除，该架构能够在存在移动干扰源的情况下实时实现30 dB的干扰消除零深度。
