发明名称 |
Correlation speed sensor |
摘要 |
A relative speed of an object is determined by monitoring random reflective surfaces in water. The system includes a first and second transmitter-receiver pair for producing echo signals of a monitored region. The monitoring pair of transducers are preferably positioned along an axis of motion of the object such that sampled data from the first and second transmitter-receiver pair are substantially similar but shifted in time due to a separation of transducers. Echo signal data from the transducers are then used to generate a time difference correlation function that is used to determine a time difference between the first and second signals. Based on the time difference between the time-shifted echo signals, a speed of a vessel is determined.
|
申请公布号 |
US2003053374(A1) |
申请公布日期 |
2003.03.20 |
申请号 |
US20020166581 |
申请日期 |
2002.06.07 |
申请人 |
AIRMAR TECHNOLOGY CORPORATION |
发明人 |
BARTZ JAMES C.;TANCRELL ROGER H.;BOUCHER STEPHEN G. |
分类号 |
G01P5/22;G01S7/526;G01S15/58;G01S15/60;(IPC1-7):G01S15/58 |
主分类号 |
G01P5/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|