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最近我们研制成功配有56cm空气芯环天线和装有自动实时增益标定电路的便携式宽带甚低频接收机。该机带宽为250Hz至48kHz;系统灵敏变(在5kHz)为1.4×10~(-6)V/m·Hz~(1/2)。在磁纬20°以下多台网同时观测结果表明接收机性能稳定可靠。
Recently we have successfully developed a 56cm air core loop antenna and portable broadband very low frequency receiver with automatic real-time gain calibration circuit. The machine bandwidth is 250Hz to 48kHz; system sensitive variable (at 5kHz) is 1.4 × 10 -6 V / m · Hz ~ (1/2). In the magnetic latitude 20 ° below the same time more than one network observation results show that the receiver performance is stable and reliable.