公开(公告)号：US09500744B2

公开(公告)日：2016-11-22

申请号：US14351171

申请日：2014-02-28

申请人： Marko Borosak

发明人： Marko Borosak

IPC分类号： G01S7/495 ,  G01S7/48 ,  G01S7/489

CPC分类号： G01S7/495 ,  G01S7/4806 ,  G01S7/489

摘要： A laser transponder system for disrupting speed and/or distance measuring LIDARs. The system includes at least two laser transponders, a microcontroller and a user interface. The microcontroller is connected to both laser transponders, and to the user interface. Microcontroller analyzes input from the laser transponders and determines their output. In case an advanced speed measuring LIDAR signal is detected the microcontroller configures the first laser transponder as a transmitting only unit and the second laser transponder as a receiving only unit. Transmissions emanating from the transmitting only unit are not received by the receiving only unit. Disrupting signal periods are selected by the microcontroller algorithm from its pre-stored database according to a detected LIDAR signal. The disrupting signal is transmitted simultaneously with synchronizing a disruption timer for the next period of a disrupting signal and multiple disruption signal periods are timed in parallel on a given synchronization event.

摘要翻译： 一种激光转发器系统，用于中断速度和/或测量LIDAR的距离。 该系统包括至少两个激光转发器，微控制器和用户接口。 微控制器连接到激光转发器和用户界面。 微控制器分析来自激光转发器的输入并确定其输出。 在检测到高级速度测量LIDAR信号的情况下，微控制器将第一激光发射机应答器配置为仅发射单元，并且将第二激光转发器配置为仅接收单元。 仅从发送单元发出的传输不被接收单元接收。 根据检测到的LIDAR信号，微控制器算法从预先存储的数据库中选择中断信号周期。 在中断信号的下一个周期同步一个中断定时器并且在给定的同步事件上并行地定时多个中断信号周期的同时传输中断信号。

公开(公告)号：US09304203B1

公开(公告)日：2016-04-05

申请号：US13802593

申请日：2013-03-13

申请人： Google Inc.

发明人： Pierre-Yves Droz ,  Gaetan Pennecot ,  Daniel Gruver

IPC分类号： G01S7/48 ,  G01S13/06 ,  G01S17/06 ,  G01S17/88 ,  G01S17/10 ,  G01S7/02 ,  G01S7/486 ,  G01S7/489

CPC分类号： G01S7/489 ,  G01S7/34 ,  G01S7/48 ,  G01S7/4808 ,  G01S7/486 ,  G01S7/4868 ,  G01S13/06 ,  G01S17/06 ,  G01S17/42 ,  G01S17/88 ,  G01S17/89 ,  G01S17/936

摘要： Methods, devices, and systems that may help improve the dynamic range of a signal receiver. The method includes (i) causing a signal emitter to emit a signal during a first period of time; (ii) receiving, at the signal receiver, a reflected signal during a second period of time, where the received reflected signal corresponds to the emitted signal, and where the second period of time begins after a beginning of the first period of time; and (iii) increasing a signal gain that is applied to the received reflected signal during a third period of time, where the third period of time begins not earlier than a beginning of the second period of time.

摘要翻译： 可能有助于改善信号接收机的动态范围的方法，设备和系统。 该方法包括（i）使信号发射器在第一时间段期间发射信号; （ii）在信号接收器处在第二时间段期间接收反射信号，其中所接收的反射信号对应于所发射的信号，并且其中第二时间段在第一时间段开始之后开始; 以及（iii）在第三时间段期间增加施加到所接收的反射信号的信号增益，其中所述第三时间段不早于所述第二时间段的开始。

公开(公告)号：US09201138B2

公开(公告)日：2015-12-01

申请号：US13395425

申请日：2010-07-15

申请人： Andreas Eisele ,  Oliver Wolst ,  Bernd Schmidtke

发明人： Andreas Eisele ,  Oliver Wolst ,  Bernd Schmidtke

IPC分类号： G01S7/491 ,  G01S7/481 ,  G01J1/04 ,  G01J1/22 ,  G01J1/42 ,  G01S7/497 ,  G01S17/10 ,  G01S7/489

CPC分类号： G01S7/4816 ,  G01J1/04 ,  G01J1/0403 ,  G01J1/0411 ,  G01J1/0418 ,  G01J1/0437 ,  G01J1/0448 ,  G01J1/22 ,  G01J1/42 ,  G01S7/489 ,  G01S7/497 ,  G01S17/10 ,  G02F2203/52

摘要： A photon detector is disclosed that includes, in addition to an immobilizable photon-sensitive element, a photon transmission element. The photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element and transmitted by the photon transmission element, for example, by modifying an absorption property or a defocusing property of the photon transmission element. Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilization range. A distancing device that includes this type of photo detector is also disclosed.

摘要翻译： 公开了一种除了可固定的光敏元件之外还包括光子传输元件的光子检测器。 光子检测器被配置为使得其可以改变影响光子敏感元件并由光子传输元件透射的光子强度，例如通过改变光子传输元件的吸收特性或散焦特性。 此外，可以是例如SPAD（单光子雪崩二极管）的固定光子敏感元件总是接近最佳工作范围并低于固定范围。 还公开了包括这种类型的光检测器的隔离装置。

公开(公告)号：US09157989B2

公开(公告)日：2015-10-13

申请号：US13597295

申请日：2012-08-29

申请人： Yuri P. Gusev

发明人： Yuri P. Gusev

IPC分类号： G01C3/08 ,  G01S7/486 ,  G01S17/10 ,  G01S7/489 ,  G01S7/484

CPC分类号： G01S7/4868 ,  G01S7/484 ,  G01S7/489 ,  G01S17/10

摘要： Methods and apparatus are presented for distance measurement using laser pulses in which at least one of an attenuation function and an offset of the attenuation function relative to the send pulse is variable to accommodate differing measurement needs. In some embodiments, at least one of an attenuation function and an offset of the attenuation function is fixed relative to the send pulse for some number of measurement cycles and information derived from the result is used to modify either or both of the attenuation function and offset of the attenuation function relative to the send pulse for subsequent measurement.

摘要翻译： 提出了使用激光脉冲进行距离测量的方法和装置，其中衰减函数和衰减函数相对于发送脉冲的偏移中的至少一个是可变的，以适应不同的测量需要。 在一些实施例中，衰减函数的衰减函数和偏移中的至少一个相对于一些测量周期的发送脉冲是固定的，并且从结果导出的信息用于修改衰减函数和偏移中的任一个或两者 的衰减函数相对于发送脉冲进行后续测量。

公开(公告)号：US5748295A

公开(公告)日：1998-05-05

申请号：US688706

申请日：1996-07-31

申请人： Brian W. Farmer

发明人： Brian W. Farmer

IPC分类号： G01S7/489 ,  G01S17/46 ,  G01C3/08 ,  G01P3/36

CPC分类号： G01S17/325 ,  G01S17/58 ,  G01S7/4916

摘要： The present invention provides a range finding system which utilizes feedback to induce mode hopping in a standing wave generator and which determines the range, direction and velocity of an object with respect to the range finding system based on the mode hop rate. The present invention provides a novel sampling technique which prevents aliasing by modulating the standing wave generator at a frequency equal to or greater than .pi. times the frequency at which the optical path between the object and the standing wave generator is oscillating or vibrating. In order to account for Doppler effect, the standing wave interference coupling is analyzed over one period of the frequency modulation rate of the standing wave generator. A spectral analysis algorithm is implemented which determines the mode hop rate of the standing wave generator and the range, direction and velocity of the object with respect to the range finding system based on the determined mode hop rate. Implementation of the spectral analysis algorithm improves signal-to-noise ratio by avoiding thresholding to provide a range finding system which is substantially amplitude independent.

摘要翻译： 本发明提供一种测距系统，其利用反馈来诱导驻波发生器中的跳频，并且基于所述模式跳频来确定对象相对于所述测距系统的范围，方向和速度。 本发明提供了一种新颖的采样技术，其通过以等于或大于物体和驻波发生器之间的光路振荡或振动的频率的π倍的频率调制驻波发生器来防止混叠。 为了考虑多普勒效应，在驻波产生器的频率调制率的一个周期内分析驻波干扰耦合。 基于所确定的模式跳频率，实现了频谱分析算法，其确定驻波发生器的模式跳频和对象相对于测距系统的范围，方向和速度。 频谱分析算法的实现通过避免阈值提供提供信噪比，以提供基本上与振幅无关的测距系统。

公开(公告)号：US4236069A

公开(公告)日：1980-11-25

申请号：US951791

申请日：1978-10-16

申请人： Richard H. Laughlin

发明人： Richard H. Laughlin

IPC分类号： G01J1/44 ,  G01S7/489 ,  H03G3/20 ,  H01J40/14

CPC分类号： H03G3/3084 ,  G01J1/44 ,  G01S7/489

摘要： A system (10) for optimizing the gain of an avalanche photodiode (12) and an associated avalanche photodiode preamplifier (14) includes a variable voltage power supply (58) interconnected to the avalanche photodiode (12) for providing a bias voltage source for the avalanche photodiode (12). Circuitry (26, 28) is provided for measuring the output noise level of the avalanche photodiode (12) and preamplifier (14). Additional circuitry (46, 48) is responsive to the circuitry (26, 28) for measuring the output noise level of the avalance photodiode preamplifier (14) for generating a control signal. The control signal is applied to the variable voltage power supply (58) for varying the bias voltage applied to the avalanche photodiode (12) by the variable voltage power supply (58) to control the output noise level of the avalanche photodiode (12), such that the output noise level of the avalanche photodiode (12) matches the output noise level of the avalanche photodiode preamplifier (14) to thereby optimize the operation of the avalanche photodiode ( 12) and the avalanche photodiode preamplifier (14) combination.

摘要翻译： 用于优化雪崩光电二极管（12）和相关联的雪崩光电二极管前置放大器（14）的增益的系统（10）包括互连到雪崩光电二极管（12）的可变电压电源（58），用于提供用于 雪崩光电二极管（12）。 电路（26,28）用于测量雪崩光电二极管（12）和前置放大器（14）的输出噪声电平。 附加电路（46,48）响应于电路（26,28），用于测量用于产生控制信号的光电二极管前置放大器（14）的输出噪声电平。 控制信号被施加到可变电压电源（58），用于通过可变电压电源（58）改变施加到雪崩光电二极管（12）的偏置电压，以控制雪崩光电二极管（12）的输出噪声电平， 使得雪崩光电二极管（12）的输出噪声电平与雪崩光电二极管前置放大器（14）的输出噪声电平相匹配，从而优化雪崩光电二极管（12）和雪崩光电二极管前置放大器（14）组合的操作。