Research on Permanent Magnet-Type Super-Low-Frequency Mechanical Antenna Communication

Table 2

Detection range and resolution of typical magnetic sensor.

Magnetic sensor	Detectable filed range	Resolution
SQUID	100 fT∼100 mT	∼50 fT/Hz
Search coil	>50 fT	<100 fT/Hz
Flux-gate	1 nT∼1 mT	∼100 fT/Hz
Optical pump	500 fT∼1 mT	∼1 pT/Hz
GMR	>1 nT	∼100 pT/Hz
Hall-effect	1 mT∼50 T	∼10 nT/Hz