公开(公告)号：US20200088521A1

公开(公告)日：2020-03-19

申请号：US16567257

申请日：2019-09-11

Applicant: iXblue

Inventor： Sophie GLEVAREC ,  Jean-Philippe MICHEL ,  Fabien NAPOLITANO ,  Guillaume PICARD ,  Martin PUCHOL

IPC: G01C21/20 ,  G01S19/47

Abstract: Disclosed is a positioning system including: several inertial measurement units; at least one common sensor, providing a measurement of a positioning parameter of a system; for each inertial measurement unit, a navigation filter configured to: a) determine an estimate of the positioning parameter, on the basis of an inertial signal provided by the inertial measurement unit; and to b) correct the estimate, as a function of the measurement and of a correction gain that is determined on the basis of an augmented variance higher than the variance of a measurement noise of a common sensor; and —at least one fusion module determining a mean of the estimates, the mean being not reinjected at the input of the navigation filters. Also disclosed is an associated positioning method.

公开(公告)号：US20160167750A1

公开(公告)日：2016-06-16

申请号：US14436621

申请日：2013-10-16

Applicant: IXBLUE

Inventor： Fabien NAPOLITANO

IPC: B63B49/00 ,  G01C21/12

CPC classification number: B63B49/00 ,  G01C21/16 ,  G01C21/203

Abstract: A system and a method for the navigation of a mobile vehicle, suitable for determining and displaying a safe navigation zone for the mobile vehicle. The navigation system includes a dead reckoning navigation system (10), a calculator (50), a storage memory (60), an embedded sensor (20), and an electronic mapping system (70). The calculator (50) is suitable for calculating an estimated position of the mobile vehicle from speed and/or acceleration measurements and a comparison of the measurement of an environmental parameter with a geographical database. The calculator (50) is suitable for calculating the probability density of the presence of the mobile vehicle around each point on the map in order to deduce a safety zone (12) corresponding to a presence probability higher than, or equal to, a pre-determined threshold p.

Abstract translation: 一种用于移动车辆的导航的系统和方法，适用于确定和显示用于移动车辆的安全导航区域。 导航系统包括航位推算导航系统（10），计算器（50），存储存储器（60），嵌入式传感器（20）和电子地图绘制系统（70）。 计算器（50）适于根据速度和/或加速度测量值以及环境参数的测量与地理数据库的比较来计算移动车辆的估计位置。 计算器（50）适于计算在地图上的每个点周围的移动车辆的存在的概率密度，以便推导出对应于高于或等于预定义的存在概率的安全区（12） 确定阈值p。

公开(公告)号：US20200264290A1

公开(公告)日：2020-08-20

申请号：US15774970

申请日：2016-11-09

Applicant: IXBLUE

Inventor： Fabien NAPOLITANO ,  Didier CHARLOT

IPC: G01S7/497 ,  G01S17/89 ,  G01S7/481 ,  G01S19/42

Abstract: Disclosed is a bathymetric system including a multi-beam emitting and receiving device attached to a carrier vehicle, configured, in a first recurrence, to measure the amplitude of a first plurality of beams reflected off the seabed, and a computer to determine three-dimensional spatial coordinates of a first scan swath. In a second recurrence, the device emits a second incident beam and measures the amplitude of a second plurality of beams reflected off the seabed, the computer determines the three-dimensional spatial coordinates of a second scan swath, so that at least one probe point of the first scan swath is redundant with a probe point of the second scan swath, and the computer calculates an altitude variation of the carrier vehicle using altitude variations of the at least one redundant probe point between the first recurrence and the second recurrence.