公开(公告)号：US07239580B2

公开(公告)日：2007-07-03

申请号：US10559623

申请日：2004-06-08

申请人： Nathan Intrator ,  Leon N. Cooper ,  Nicola Neretti

发明人： Nathan Intrator ,  Leon N. Cooper ,  Nicola Neretti

IPC分类号： G01S15/02 ,  G01S15/06 ,  G01S15/32

CPC分类号： G01S7/527

摘要： A system and method of performing sonar range estimations in a noisy sonar environment. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data analyzer. The transmitter transmits a pulse through a transmission medium. The pulse travels through the transmission medium until it strikes an object, which returns an echo to the sensor. The sensor provides the echo to the receiver, which provides an indication of the echo to the band-pass filters. The respective band-pass filters provide filtered versions of the echo and pulse to the cross correlator, which performs multiple cross correlation operations on the filtered echo and pulse. The cross correlator provides output data to the data analyzer, which uses the data to estimate the SNR in the environment and to determine a pulse center frequency corresponding to the estimated SNR. By controlling the center frequency of pulses emitted by the transmitter based on information provided by the data analyzer, the system obtains sonar range estimations with increased accuracy.

摘要翻译： 在噪声声纳环境中执行声纳范围估计的系统和方法。 该系统包括传感器，发射器，接收器，多个带通滤波器，互相关器和数据分析器。 发射机通过传输介质发送脉冲。 脉冲通过传输介质，直到其撞击物体，这将返回到传感器。 传感器向接收器提供回波，其提供带通滤波器的回波的指示。 相应的带通滤波器向互相关器提供回波和脉冲的滤波版本，其对滤波的回波和脉冲执行多个互相关操作。 交叉相关器向数据分析器提供输出数据，数据分析器使用数据来估计环境中的SNR，并确定与估计的SNR相对应的脉冲中心频率。 通过根据数据分析仪提供的信息控制发射机发出的脉冲的中心频率，系统以更高的精度获得声纳范围估计。