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1. 发明申请

US20090122319A1 NON-UNIFORM SAMPLING TO EXTEND DYNAMIC RANGE OF INTERFEROMETRIC SENSORS 有权
标题翻译：非均匀采样来扩展干涉式传感器的动态范围
公开(公告)号：US20090122319A1
公开(公告)日：2009-05-14
申请号：US11939366
申请日：2007-11-13
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard
IPC分类号： G01B9/02
CPC分类号： G01H9/004 , G01D5/35312 , G01D5/35396 , G01P15/093 , G01V1/226 , G01V1/24 , G01V2210/1427
摘要： Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time.
摘要翻译：提供了使用非均匀采样来询问具有高压摆率的光学传感器的方法和装置。采用不均匀图案的光信号的传输来允许解调超过通常被认为是平均采样频率的一半给出的奈奎斯特频率极限的条纹速率。通过监测时间依赖条纹频率并假定条纹频率具有有限的带宽，则只需要在瞬时条纹频率周围小于Nyquist带宽的有限带宽即可在任何时候重构。

2. 发明授权

US07433045B2 Active coherence reduction for interferometer interrogation 有权
标题翻译：干涉仪询问的主动相干减少
公开(公告)号：US07433045B2
公开(公告)日：2008-10-07
申请号：US10961326
申请日：2004-10-08
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard , Kjell Blotekjaer , Dag Thingbo , Sigurd Lovseth , Sverre Kundsen
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard , Kjell Blotekjaer , Dag Thingbo , Sigurd Lovseth , Sverre Kundsen
IPC分类号： G01B9/02
CPC分类号： G01D5/35312
摘要： Methods and apparatus reduce coherence of an optical signal that is used to interrogate optical interferometric sensors. The optical field phasor of the interrogation source is modulated in a controlled manner to produce a broadened optical source power spectrum at the output of the source unit. The output from the source unit is launched into an optical sensor network, comprising a multiple of optical pathways from its input to the detection unit, where pairs of optical pathways form sensor interferometers. A compensating interferometer with delay difference similar to the sensor delay difference may be arranged in a serially coupled manner with the optical sensor network, either before or after the network. The coherence modulation may be performed through direct modulation of the source or through external modulation of the light with piezoelectric ring modulator, a Lithium niobate phase or intensity modulator, or an acoustooptic modulator.
摘要翻译：方法和装置减少用于询问光学干涉测量传感器的光信号的相干性。以受控方式调制询问源的光场相量，以在源单元的输出处产生加宽的光源功率谱。来自源单元的输出被发射到光学传感器网络中，包括从其输入到检测单元的多个光学路径，其中成对的光学路径形成传感器干涉仪。具有与传感器延迟差相似的延迟差的补偿干涉仪可以在网络之前或之后以光学传感器网络的串联方式布置。可以通过源的直接调制或通过压电环调制器，铌酸锂相或强度调制器或声光调制器的光的外部调制来执行相干调制。

3. 发明授权

US07679994B2 Bi-directional interrogation of optical sensors 有权
标题翻译：双向询问光传感器
公开(公告)号：US07679994B2
公开(公告)日：2010-03-16
申请号：US11932116
申请日：2007-10-31
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg , Jon Thomas Kringlebotn
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg , Jon Thomas Kringlebotn
IPC分类号： G01V1/00
CPC分类号： G01D5/35383 , G01V1/20
摘要： Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.
摘要翻译：提供了地震传感器系统和传感器站拓扑，以及相应的电缆和传感器站组件，制造和部署技术。对于一些实施例，提供了光学海底地震（OBS）站的网络，其中传感器站以模块化方式被有效地部署为沿着多光纤缆线部署的一系列阵列电缆模块。

4. 发明申请

US20080123467A1 SEISMIC STREAMER ARRAY 有权
标题翻译：地震流星星阵
公开(公告)号：US20080123467A1
公开(公告)日：2008-05-29
申请号：US11932920
申请日：2007-10-31
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg
IPC分类号： G01V1/38
CPC分类号： G01D5/35383 , G01H9/004 , G01V1/20 , G01V1/201 , G01V1/226 , G01V1/3808 , G01V2210/1427
摘要： Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.
摘要翻译：提供了地震传感器系统和传感器站拓扑，以及相应的电缆和传感器站组件，制造和部署技术。对于一些实施例，提供了光学海底地震（OBS）站的网络，其中传感器站以模块化方式被有效地部署为沿着多光纤缆线部署的一系列阵列电缆模块。

5. 发明授权

US07480056B2 Multi-pulse heterodyne sub-carrier interrogation of interferometric sensors 有权
标题翻译：干涉测量传感器的多脉冲外差副载波询问
公开(公告)号：US07480056B2
公开(公告)日：2009-01-20
申请号：US10862123
申请日：2004-06-04
申请人： Ole Henrik Waagaard , Erlend Ronnekleiv
发明人： Ole Henrik Waagaard , Erlend Ronnekleiv
IPC分类号： G01B9/02
CPC分类号： G01D5/35383
摘要： A method for interrogating time-multiplexed interferometric sensors using multiple interrogation pulses so as to increases the allowable interrogation pulse duty-cycle and improve the signal-to-noise ratio. In each TDM repetition period a sequence of multiple interrogation pulses are generated. The pulses in the sequence are separated by a time that is equal to the sensor imbalance. The phase from pulse to pulse in each TDM time-slot is modulated at a different, linear rate such that the pulse in time-slot m will have an optical frequency that is shifted by mΔν, where Δν is the sub-carrier frequency. Because multiple reflections do not need to fade out the inventive method can enhance the signal-to-noise ratio of interferometric sensors such as inline Fabry-Perot sensors.
摘要翻译：一种使用多个询问脉冲询问时间多路复用干涉测量传感器的方法，以增加可允许的询问脉冲占空比并提高信噪比。在每个TDM重复周期中，产生多个询问脉冲序列。序列中的脉冲被分离等于传感器不平衡的时间。在每个TDM时隙中的从脉冲到脉冲的相位以不同的线性速率被调制，使得时隙m中的脉冲将具有偏移mDeltanu的光频率，其中Deltanu是子载波频率。由于多次反射不需要淡出，本发明的方法可以增强干涉式传感器的信噪比，例如在线法布里 - 珀罗传感器。

6. 发明申请

US20080291461A1 METHOD AND APPARATUS FOR SUPPRESSION OF CROSSTALK AND NOISE IN TIME-DIVISION MULTIPLEXED INTERFEROMETRIC SENSOR SYSTEMS 审中-公开
公开(公告)号：US20080291461A1
公开(公告)日：2008-11-27
申请号：US12187750
申请日：2008-08-07
申请人： OLE HENRIK WAAGAARD , Erlend Ronnekleiv
发明人： OLE HENRIK WAAGAARD , Erlend Ronnekleiv
IPC分类号： G01B9/02
CPC分类号： G01D5/3539 , G01D5/35312
摘要： Unwanted signal components in time-division multiplexed (TDM) systems may lead to crosstalk and noise if these pulses overlap with signal pulses from an interrogated sensor. The crosstalk and noise are dominated by interference between the signal pulses from the interrogated sensor and the unwanted signal components and can be greatly reduced by suppressing this interference signal. The unwanted signal components may include overlapping pulses originating from different sets of interrogation pulses (repetition periods). Modulating the phase or frequency between the repetition periods so that the unwanted interference signal does not appear at frequencies from which the phase of the interrogated sensor is demodulated suppresses this interference. Other unwanted signal components include leakage light during dark periods of the duty cycle of an interrogation signal. Modulating the phase difference between the interrogation signal and the leakage light suppresses the interference between the leakage light and the interrogation signal.

7. 发明申请

US20080112267A1 OPTICAL SENSOR INTERROGATION WITH WAVELENGTH GROUPING IN TIME SLOTS 有权
标题翻译：光波传感器与时间段波长分组
公开(公告)号：US20080112267A1
公开(公告)日：2008-05-15
申请号：US11932165
申请日：2007-10-31
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard , Hilde Nakstad , Arne Berg
IPC分类号： G01V1/38
CPC分类号： G01D5/35383 , G01V1/20
摘要： Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.
摘要翻译：提供了地震传感器系统和传感器站拓扑，以及相应的电缆和传感器站组件，制造和部署技术。对于一些实施例，提供了光学海底地震（OBS）站的网络，其中传感器站以模块化方式被有效地部署为沿着多光纤缆线部署的一系列阵列电缆模块。

8. 发明授权

US07916303B2 Non-uniform sampling to extend dynamic range of interferometric sensors 有权
标题翻译：非均匀采样来扩展干涉测量传感器的动态范围
公开(公告)号：US07916303B2
公开(公告)日：2011-03-29
申请号：US11939366
申请日：2007-11-13
申请人： Erlend Ronnekleiv , Ole Henrik Waagaard
发明人： Erlend Ronnekleiv , Ole Henrik Waagaard
IPC分类号： G01B9/02
CPC分类号： G01H9/004 , G01D5/35312 , G01D5/35396 , G01P15/093 , G01V1/226 , G01V1/24 , G01V2210/1427
摘要： Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time.
摘要翻译：提供了使用非均匀采样来询问具有高压摆率的光学传感器的方法和装置。采用不均匀图案的光信号的传输来允许解调超过通常被认为是平均采样频率的一半给出的奈奎斯特频率极限的条纹速率。通过监测时间依赖条纹频率并假定条纹频率具有有限的带宽，则只需要在瞬时条纹频率周围小于Nyquist带宽的有限带宽即可在任何时候重构。

9. 发明授权

US07551517B2 Seabed seismic station packaging 有权
标题翻译：海底地震台包装
公开(公告)号：US07551517B2
公开(公告)日：2009-06-23
申请号：US11381922
申请日：2006-05-05
申请人： Arne Berg , Erlend Ronnekleiv , Ole Henrik Waagaard , Jon Thomas Kringlebotn , Hilde Nakstad , Roar Furuhaug
发明人： Arne Berg , Erlend Ronnekleiv , Ole Henrik Waagaard , Jon Thomas Kringlebotn , Hilde Nakstad , Roar Furuhaug
IPC分类号： G01V8/24 , G01V8/16 , G01V1/38 , G01H9/00
CPC分类号： G01V1/16
摘要： A seismic sensor station includes a housing containing a fiber optic hydrophone and a fiber optic accelerometer that can both be made from a single length of optical fiber arranged inside the housing. The fiber optic accelerometer is arranged in a liquid/oil filled compartment of the housing for dampening of mechanical resonances in the accelerometer due to mechanical disturbances and pressure fluctuations.
摘要翻译：地震传感器站包括容纳光纤水听器和光纤加速度计的外壳，光纤加速度计都可以由布置在壳体内部的单个长度的光纤制成。光纤加速度计布置在壳体的液体/油填充室中，用于由于机械干扰和压力波动而阻尼加速度计中的机械谐振。

10. 发明申请

US20090111417A1 ADAPTIVE MIXING FOR HIGH SLEW RATES 有权
标题翻译：适用于高速率的混合
公开(公告)号：US20090111417A1
公开(公告)日：2009-04-30
申请号：US11924409
申请日：2007-10-25
申请人： Ole Henrik Waagaard , Erlend Ronnekleiv
发明人： Ole Henrik Waagaard , Erlend Ronnekleiv
IPC分类号： H04B1/10
CPC分类号： G01H9/004 , G01D5/35303
摘要： A method and apparatus for demodulation of detected fringes from interferometric sensors with high slew rates are provided. A detected interference signal may be mixed with a local oscillator phasor to obtain a mixed signal, the local oscillator being controlled to produce a frequency that roughly matches the fringe frequency of the interference signal. A sensor phase estimate may be obtained from the detected interference signal or the mixed signal. The local oscillator signal can be computed from the sensor phase estimate. The mixed signal and the sensor phase estimate may be low pass filtered and decimated and the resulting decimated mixed signal and decimated sensor phase estimate may be processed and combined with moderate processing power requirements in an effort to accurately measure the sensor phase for the interferometric sensor.
摘要翻译：提供了一种用于从具有高压摆率的干涉式传感器中解调检测条纹的方法和装置。检测到的干扰信号可以与本地振荡器相量混合以获得混合信号，本地振荡器被控制以产生与干扰信号的边缘频率大致匹配的频率。可以从检测到的干扰信号或混合信号获得传感器相位估计。可以从传感器相位估计来计算本地振荡器信号。可以对混合信号和传感器相位估计进行低通滤波和抽取，并且可以处理所产生的抽取的混合信号和抽取的传感器相位估计，并结合中等处理能力要求，以精确地测量干涉传感器的传感器相位。

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