Positioning directional antenna installation device of multi-beam depth finder

The utility model discloses a multi-beam depth finder positioning directional antenna mounting device in the technical field of depth finder antenna mounting structures, which comprises a mounting rod fixing seat fixed on one side of a measuring ship side, a mounting rod is vertically mounted on the mounting rod fixing seat, and the lower end of the mounting rod extends into water and is connected with a probe. The upper end of the mounting rod is provided with a mounting flange, the top of the mounting flange is connected with a mounting substrate, the top of the mounting substrate is connected with an antenna support, and the front and rear ends of the antenna support are respectively provided with a positioning antenna and a directional antenna through antenna adapters. According to the utility model, the positions of the positioning antenna and the directional antenna at the front and rear ends of the antenna support and a ship body coordinate system or relative reference points are clear, the measurement