Method for correcting errors of towed sonar system by utilizing neighbor interference

Abstract

The invention discloses a method for correcting errors of a towed sonar system by using neighbor interference, which belongs to the field of overall integrated design and comprises the following stepsof: after reaching a preset sea area, constructing a transceiving dual-channel by using a fixed sound source on a neighbor naval vessel as an interference emission source and using own towed sonar tobe corrected and hull sonar as receiving ends; simultaneously acquiring a series of target information sequences are through transceiving dual channels, a warship hull sonar and a towing sonar by using pulse signals emitted by a neighbor warship in all directions; performing data arrangement and smoothing processing on the target information sequence to obtain an interference azimuth informationsequence after arrangement and smoothing processing; solving a conversion coordinate parameter according to the geometrical relationship among the warship shell sonar, the warship dragging sonar, theneighbor warship and the conversion projection; and obtaining a towed sonar direction-finding and distance-measuring converted value under the real target by adopting the statistical value of the converted coordinate parameter. System error correction of towed sonar of different water surface platforms can be supported.

Description

technical field [0001] The invention belongs to the field of overall integrated design, and more specifically relates to a method for correcting errors of a towed sonar system by using friendly neighbor interference. Background technique [0002] When the towed line array sonar is in use, it is towed to a certain distance at the tail of the carrying platform, and the working depth of the line array can be adjusted by adjusting the length of the cable and the towing speed, so that a better detection transmission channel can be established and the detection distance is long. However, due to the use of flexible towing cables, when the towed sonar converts the detected target information to the origin of the underwater coordinates of the whole ship (usually located at a fixed part of the ship), it will bring large system errors, mainly including: One is the measurement error of the heading sensor introduced by the heading sensor in the linear array when compensating the directio...

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention proposes a method for correcting the system error of the towed sonar by using friendly neighbor interference, which is used to solve the problem that the system error of the towed sonar is large and lacks effective and practical measurement and correction methods, support system error correction of towed sonars on different water surface platforms

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