Method and system for confirming optimum operating frequency of underwater vehicle whip antenna
An underwater vehicle and operating frequency technology, applied in the transmission system, underwater/underground adaptation, suitable for antennas on movable objects, etc., can solve problems such as communication system establishment failure, improve reliability, and improve signal-to-noise Compared with the effect of reducing the receiving bit error rate
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[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with some accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045] Such as figure 2 As shown, it can be seen that the total length of the whip antenna is l , the length of the exposed part is l 1 , the length in water is l 2 . In order to calculate the input impedance of the whip antenna at a certain height above the water surface, and determine the radiated power to the external field, it is necessary to consider the impedance of the antenna in the free spa...
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