根据双基地声呐定位的原理，建立双基地声呐距离误差估计模型，考虑时间测量误差、测向误差和声速测量误差等因素对双基地声呐探测精度的影响，详细分析定位椭圆离心率和方位角度大小对距离均方根误差的影响。仿真分析表明，目标所处方位和距收发点距离远近程度对距离估计影响最大，在收发距离一定时，目标越远离收发点，方位角度对距离估计的影响也随之减小，均方根误差值保持在一个较低的范围。根据本文的误差估计模型，对双基地声呐进行合理的声呐配置，可实现远距离探测且具有较高的定位精度。
Based on the principle of bistatic sonar orientation, we build the model of estimation on distance error considering the measured error of time, direction and acoustic velocity, and detailedly analyse the mean square error influenced by eccentricity of ellipse and orientation. The outcome of simulation indicate that the orientation and position of the targets apart from the sender and receiver impact the estimated precision of distance. On the condition of the distance of sender and receiver fixed, the position more apart from the sender and receiver, the distance estimation lower effect influenced by the orientation of targets, and the value of mean square error of distance keeps in a lower scope. According to the model of estimation presented by this paper, deploy the bistatic sonar reasonably can realized high precision and detected targets in a long distance.
2022,44(23): 128-131 收稿日期：2022-01-13
DOI：10.3404/j.issn.1672-7649.2022.23.025
分类号：TP391.9
作者简介：舒象兰(1980-)，男，博士，讲师，研究方向为声呐信号处理
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