Portable auxiliary calibration device for fishery acoustic device and calibration method thereof

Abstract

The invention discloses a portable auxiliary calibration device for a fishery acoustic device and a calibration method thereof. The portable auxiliary calibration device comprises a fixing frame, a cone-shaped support, four elastic strings, four fishing lines and a small calibration ball, wherein the fixing frame is fixed at the top of the cone-shaped support and used for fixing an acoustic probe, one ends of all the elastic strings are connected with positions which are distributed at an equal distance around the bottom of the cone-shaped support, the other ends of all the elastic strings are in convergent connection with the small calibration ball, and the small calibration ball is fixed at the center of the bottom of the cone-shaped support; one ends of all the fishing lines are also in convergent connection with the small calibration ball, and the other ends of all the fishing lines stretch above the fixing frame respectively from the positions distributed at the equal distance along the cone-shaped support; the calibration device uses a support having certain weight to fix the acoustic probe and the small calibration ball, and can reduce the influence of the water flow on equipment; and the small calibration ball is fixed on the support by the elastic strings, and can automatically reset under the action of elastic force.

Description

technical field [0001] The invention relates to a portable fishery acoustic equipment auxiliary calibration device and a calibration method thereof. Background technique [0002] Each fishery acoustic equipment must be calibrated in the field environment in a certain period in order to obtain more accurate target data (TS, SV, etc.). The quality of equipment calibration depends on the orientation and depth of the fixed-diameter calibration sphere in the body of water. In the ocean current environment, affected by factors such as ocean currents and surges, it is difficult to achieve accurate control. In this case, it can only be controlled in real time according to the environment, which will consume a lot of manpower and time, and the efficiency is very low. Therefore, how to complete the calibration of equipment in complex marine environments efficiently and with high quality has become an urgent problem to be solved in the application of fishery acoustic equipment. Cont...

AI Technical Summary

Problems solved by technology

In the ocean current environment, affected by factors such as ocean currents and surges, it is difficult to achieve accurate control. In this case, it can only be controlled in real time according to the environment, which will consume a lot of manpower and time, and the efficiency is very low.

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