Abstract: A low-altitude frequency domain electromagnetic detection device and an electromagnetic detection method are disclosed. A transmitting wireframe, a receiving wireframe I, a transmitting and receiving system and a receiving wireframe II of the detection device are connected with supporting rods at intervals, and the supporting rods are connected with an unmanned aerial vehicle. A sine wave generation module of the transmitting and receiving system is connected with the transmitting wireframe, the receiving wireframes I and II are connected with a dual-channel synchronous data acquisition module, and the dual-channel synchronous data acquisition module is connected with a main control module. The main control module controls the sine wave generation module, receives data of an altimeter, a GNSS module and the dual-channel synchronous data acquisition module and records the data in a storage module.

Abstract: A low-altitude frequency domain electromagnetic detection device and an electromagnetic detection method are disclosed. A transmitting wireframe, a receiving wireframe I, a transmitting and receiving system and a receiving wireframe II of the detection device are connected with supporting rods at intervals, and the supporting rods are connected with an unmanned aerial vehicle. A sine wave generation module of the transmitting and receiving system is connected with the transmitting wireframe, the receiving wireframes I and II are connected with a dual-channel synchronous data acquisition module, and the dual-channel synchronous data acquisition module is connected with a main control module. The main control module controls the sine wave generation module, receives data of an altimeter, a GNSS module and the dual-channel synchronous data acquisition module and records the data in a storage module.

Abstract: A multi-station concurrent testing method, comprising: a step A in which the control station controls the handler to send SOT signal(s) of corresponding testing station(s) based on previous testing results at adjacent testing stations of the testing stations; a step B in which the control station constructs an SOT signal sequence based on the received SOT signal(s) and in correspondence to orders of the testing stations; and a step C in which the control station compares the SOT signal sequence and an SOT signal prediction value sequence generated by the control station, wherein if the SOT signal sequence and the SOT signal prediction value sequence match, the corresponding testing station(s) executes the test of device(s) under test, and otherwise, the handler is controlled to purge the devices under test at the testing stations, the SOT signal prediction value sequence is generated based on previous testing results at the testing stations.

Abstract: A multi-station concurrent testing method, comprising: a step A in which the control station controls the handler to send SOT signal(s) of corresponding testing station(s) based on previous testing results at adjacent testing stations of the testing stations; a step B in which the control station constructs an SOT signal sequence based on the received SOT signal(s) and in correspondence to orders of the testing stations; and a step C in which the control station compares the SOT signal sequence and an SOT signal prediction value sequence generated by the control station, wherein if the SOT signal sequence and the SOT signal prediction value sequence match, the corresponding testing station(s) executes the test of device(s) under test, and otherwise, the handler is controlled to purge the devices under test at the testing stations, the SOT signal prediction value sequence is generated based on previous testing results at the testing stations.