一种混沌水声定位方法

Chaotic underwater sound positioning method

Abstract

The invention discloses a chaotic underwater sound positioning method. The chaotic underwater sound positioning method includes steps that (1) a chaotic detecting signal is generated; (2) impulse type sending of the detecting signal is prepared; (3) a sending base sends the detecting signal in a directional mode or in a scanning mode; (4) the sending base receives an echo signal that is reflected by a target and records a target azimuth angle; (5) the sending base estimates distance between the sending base and the scanned target; (6) a receiving base sends the echo signal that is received in the scanning mode and reflected by the target into a third chaotic matching filter and records the target azimuth angle; (7) the receiving base sends a direct transmitted signal that is received in the directional mode into a fourth chaotic matching filter; (8) chaotic matched filtered signals that are obtained in the steps (6) and (7) are subjected to traditional matched filtering, pulse accumulation is performed to estimate time delay of the echo signal that is reflected by the target, and the distance from the sending base to the target and then to the receiving base is estimated; (9) two-dimensional positioning of the target is finished. By means of the chaotic underwater sound positioning method, the positioning process is simple, and the accuracy is high.
本发明公开了一种混沌水声定位方法,步骤包括:1)生成混沌探测信号;2)准备脉冲式发射探测信号;3)发射基地定向发射和扫描式发射探测信号;4)发射基地接收目标反射的回波信号记录目标方位角;5)发射基地估算发射基地与扫描到的目标之间的距离;6)接收基地将扫描式接收到的目标反射的回波信号送入第三混沌匹配滤波器,并记录目标方位角;7)接收基地将定向接收的直传信号送入第四混沌匹配滤波器;8)将步骤6和步骤7中得到的混沌匹配滤波信号再传统匹配滤波,脉冲积累估计出目标反射的回波信号的时延,估算发射基地到目标再到接收基地的距离;9)完成对目标的二维定位。本发明方法,定位过程简单,准确性高。

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    CN-101545972-ASeptember 30, 2009华南理工大学An underwater positioning system and a method
    CN-101975949-AFebruary 16, 2011苏州桑泰海洋仪器研发有限责任公司一种多用户水下超短基线定位设备与方法
    US-2005219950-A1October 06, 2005University Of Victoria Innovation And Development CorporationApparatus and methods for determining range and bearing using time-stamped messaging

NO-Patent Citations (5)

    Title
    BOYUAN LI ET AL.: "A Novel Sonar Ranging Method Using Discrete Tent-map Chaotic Phase Modulated Signal", 《JOURNAL OF COMPUTATIONAL INFORMATION SYSTEMS》
    周胜等: "主动声纳混沌回波的拓扑匹配滤波方法", 《鱼雷技术》
    周胜等: "主动声纳的混沌波形设计和解调方法", 《电子与信息学报》
    孙勇等: "双基地声呐定位算法的研究与比较", 《计算机仿真》
    张小凤等: "双基地声纳定位精度和算法研究", 《系统仿真学报》

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    Publication numberPublication dateAssigneeTitle