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Helicopter aeronautical electromagnetic recording device and emission source parameter identification method

A technology of parameter identification and emission source, which is applied in the field of aeronautical electromagnetic detection, can solve the problems that cannot be directly used and difficult time-domain observation, and achieve the effect of avoiding the loss of high-frequency information and improving the effective bandwidth

Active Publication Date: 2022-05-13
JILIN UNIV
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Problems solved by technology

As the emission source of airborne electromagnetic detection, the pseudo-random code is difficult to observe directly in the time domain, and it is not suitable for the conventional extraction method, so the previous method of judging the working state of the system cannot be directly used

Method used

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  • Helicopter aeronautical electromagnetic recording device and emission source parameter identification method
  • Helicopter aeronautical electromagnetic recording device and emission source parameter identification method
  • Helicopter aeronautical electromagnetic recording device and emission source parameter identification method

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] see figure 1 combine figure 2 As shown, the helicopter airborne electromagnetic method recording system of the high-frequency m-sequence coded emission source is composed of two parts: a magnetic field sensor and a receiver. Wherein, the three-component magnetic field sensor is composed of two basic parts of the three-component air-core receiving coil 4 and the preamplifier circuit 2, and includes the necessary sensor first protection and fixing structure 43, the second protection and fixing structure 44 and the transmission cable 3, wherein . The three-component receiving coil is composed of three air-core coils...

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Abstract

The invention belongs to the field of aeronautical electromagnetic detection, and relates to a helicopter aeronautical electromagnetic recording device and a method for identifying emission source parameters, which are carried on a helicopter platform and include a magnetic field sensor and a receiver. The line is connected to the receiver in the cabin, and the controller of the receiver runs the high-frequency m-sequence coded emission source parameter identification software, and the receiver starts the acquisition card to collect data through the controller; the onboard clock of the acquisition card is routed to the The counting card is used as a synchronous signal to synchronize the transmitter after frequency division by the counting card; the current sensor is used inside the transmitter to record the excitation current data, and the data is transmitted to the receiver through the cable, and the receiver runs high-frequency m-sequence coded emission source parameters The identification software identifies the parameters of the transmitter through the collected current data of the transmitter. It can accurately perceive the changes of its secondary induction field, and collect massive data accurately and quickly.

Description

technical field [0001] The invention belongs to the field of aeronautical electromagnetic detection, and in particular relates to a broadband three-component magnetic field sensor for a high-frequency m-sequence emission source, a high-sampling rate, and a high-speed electromagnetic method receiver for a helicopter platform, and a helicopter aeronautical electromagnetic recording device and emission source Parameter identification method. Background technique [0002] Helicopter airborne electromagnetic method is a kind of airborne electromagnetic method (AEM). The helicopter electromagnetic exploration system uses the helicopter as the carrier. During the flight, the large emission magnetic moment generated by the transmitting coil on the pod excites the underground medium, and the underground medium generates a secondary induction field due to the eddy current effect. The secondary field signal is detected by the receiving device. Receive and realize the interpretation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08
CPCG01V3/083G01V2003/085
Inventor 王世隆王言章刘明朱凯光
Owner JILIN UNIV
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