论文标题
使用便携式原子磁力计的谐振非常低和超低频率的数字信号接收
Resonant Very Low- and Ultra Low Frequency Digital Signal Reception Using a Portable Atomic Magnetometer
论文作者
论文摘要
通过衰减媒体进行无线电通信需要使用非常低的频率（VLF）和超低频率（ULF）载波，这些频率经常用于水下和地下通信应用中。量子传感技术可用于规避经典信号传感器的尺寸，重量和噪声底的硬性约束。在这个低频范围内，光学泵送的原子样品可用于检测载体波和碱原子分裂的载体波调节剂。使用紧凑的自我校准系统，我们证明了使用在200 Hz -200 kHz范围内使用二进制相和频率键编码的数字数据的谐振原子传感器。我们提供现场试验数据，显示了传感器噪声底线，解码数据并接收到的位错误率，并使用此设备计算了次海通信的预计范围。
Radio communication through attenuating media necessitates the use of very-low frequency (VLF) and ultra-low frequency (ULF) carrier bands, which are frequently used in underwater and under-ground communication applications. Quantum sensing techniques can be used to circumvent hard constraints on the size, weight and noise floor of classical signal transducers. In this low-frequency range, an optically pumped atomic sample can be used to detect carrier wave modulation resonant with ground-state Zeeman splitting of alkali atoms. Using a compact, self-calibrating system we demonstrate a resonant atomic transducer for digital data encoded using binary phase- and frequency-keying of resonant carrier waves in the 200 Hz -200 kHz range. We present field trial data showing sensor noise floor, decoded data and received bit error rate, and calculate the projected range of sub-sea communication using this device.
