Boat type ground exploring radar antenna

Abstract

A radar antenna for detecting underwater object in motor boat type consists of over-water operation platform with operation cabin and antenna chamber as well as water cabin in motor boat type, radar antenna used to detect underwater object and set on said platform. It is featured as using water cabin to injecting or draining water for regulating levelness of said platform, setting the same two radiators in bow tie form and shielding unit in antenna chamber at middle of said platform, setting operation cabin at back of said platform for setting power mechanicals and for being used by staff members.

Description

technical field [0001] The invention relates to an antenna arrangement for a ground penetrating radar system for underwater object detection. Background technique [0002] The function of the ground penetrating radar antenna is to transmit the electromagnetic pulse signal and receive the echo signal from below, and it is one of the main components of the ground penetrating radar system. Ground penetrating radar is used for underwater detection from the water surface, and the distance between the antenna and the water surface below is required to be fixed and as small as possible, and the coupling condition is very stable. For the survey of rivers, reservoirs, lakes and underwater natural objects and artificial structures, because the detection depth is usually large, it is necessary to use a large and low-frequency antenna. For the detection of hidden dangers in water conservancy projects (such as reservoir dams, barrage dams, river underwater slope protection projects, etc...

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of Method 1: The selected ship needs to meet several conditions: the bottom of the ship is made of materials with low conductivity, otherwise the signal emitted by the antenna and the echo signal from the underwater will be severely attenuated or even unable to pass through; The part of the antenna is a horizontal plane with a large enough area, and the distance from the water surface below is small; the ship cannot be too large, otherwise it cannot enter a small space and be close to the shore and detect buildings on the water

Therefore, it is difficult to find ready-made ships that can meet the requirements, which greatly restricts the general application of this method

[0004] The defect of method 2: in the case of wind and waves and high-speed driving, the contact condition between the bottom of the antenna and the water surface will change continuously, resulting in unstable coupling of the antenna, and the quality of detection data will be significantly reduced; The routes cannot be consistent, and it is difficult to accurately locate underwater targets; it is inconvenient to operate in a small space

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