使用便携式原子磁力计的谐振甚低频和超低频数字信号接收
Resonant Very Low- and Ultra Low Frequency Digital Signal Reception Using a Portable Atomic Magnetometer
摘要：
通过衰减介质的无线电通信需要使用甚低频（VLF）和超低频（ULF）载波频带，其经常用于水下和地下通信应用。量子传感技术可用于规避对经典信号换能器的尺寸、重量和噪声基底的硬约束。在这个低频范围内，光泵原子样品可以用来检测与碱金属原子基态塞曼分裂共振的载波调制。使用一个紧凑的，自校准系统，我们展示了一个谐振原子传感器的数字数据编码使用二进制相位和频率键控的谐振载波在200 Hz-200 kHz的范围。我们目前的现场试验数据显示传感器的本底噪声，解码数据和接收的误码率，并计算使用该设备的水下通信的投影范围。
英文摘要：
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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
