Frequency domain aviation extremely low frequency electromagnetic method

The invention provides a novel frequency domain aviation extremely low frequency electromagnetic method. According to the method, an extremely low frequency electromagnetic signal which is transmitted by a ground high power launching pad is used. A launch vehicle takes a magnetic sensor to synchronously receive the magnetic signal of the launching pad above a target zone to identify a target. The method overcomes the disadvantages of shallow detection depth, heavy equipment, rigour construction demanding, high economic cost and the like of the existing frequency domain aviation electromagnetic method, takes into account the advantages of aviation extremely low frequency method and aviation natural electromagnetic field method, and has the advantages of deep detection depth, simple construction condition, portable equipment, high operability, low economic cost and the like. 本发明提出种新型频率域航空极低频电磁方法，利用地面大功率发射台发射的极低频电磁信号，通过运载工具搭载磁传感器在目标区上空同步接收发射台的磁信号方法对目标进行识别。该方法克服了目前的频率域航空电磁法探测深度浅、设备笨重、施工要求苛刻、经济成本高等缺点，兼顾了航空甚低频法和航空天