公开(公告)号：US06765663B2

公开(公告)日：2004-07-20

申请号：US10099706

申请日：2002-03-14

Applicant: Robert W. Byren ,  Edward L. Arnn

Inventor： Robert W. Byren ,  Edward L. Arnn

IPC: G01B1126

CPC classification number: F41G3/326 ,  G01B11/26

Abstract: An efficient multi-emitter boresight reference source (12). The efficient reference source (12) includes a first mechanism (182) for transmitting a first portion of electromagnetic energy (184) within a first waveband. A second mechanism (186) transmits a second portion of electromagnetic energy (188) within a second waveband different than the first waveband. A third mechanism (148) for combining the first portion of electromagnetic energy and the second portion of electromagnetic energy to yield a uniform reference beam (28).

Abstract translation: 一种高效的多发射器视轴参考源（12）。 有效参考源（12）包括用于在第一波段内传输第一部分电磁能（184）的第一机构（182）。 第二机构（186）在不同于第一波段的第二波段内传输电磁能量（188）的第二部分。 一种用于组合第一部分电磁能量和第二部分电磁能量以产生均匀参考光束（28）的第三机构（148）。

公开(公告)号：US06469792B1

公开(公告)日：2002-10-22

申请号：US09516419

申请日：2000-03-01

Applicant: Edward L. Arnn

Inventor： Edward L. Arnn

IPC: G01C1972

CPC classification number: G01C19/72

Abstract: A system and method for processing the output of a fiber-optic gyroscope. The inventive circuit (10) includes a photodetector (24) for detecting electromagnetic energy received from the fiber-optic gyroscope (18,20) and providing an analog input signal in response thereto. An analog-to-digital converter (42) is provided for processing the analog input signal and providing a digital signal in response thereto. A source (30) is provided for injecting a dither signal between the photodetector (24) and the analog-to-digital converter (42). In the illustrative embodiment, the source (30) supplies a triangle wave signal. The output of the photodetector (24) is supplied to the summing input of a differential amplifier (29) and the output of the source (30) supplies the differencing input to the differential amplifier (29). The output of the analog-to-digital converter (42) is provided to a digital signal processor (44) as per usual practice.

Abstract translation: 一种用于处理光纤陀螺仪输出的系统和方法。 本发明的电路（10）包括用于检测从光纤陀螺仪（18,20）接收的电磁能量并提供响应于此的模拟输入信号的光电检测器（24）。 提供一个模拟 - 数字转换器（42），用于处理模拟输入信号并响应于此提供一个数字信号。 源（30）被提供用于在光电检测器（24）和模 - 数转换器（42）之间注入抖动信号。 在说明性实施例中，源（30）提供三角波信号。 光电检测器（24）的输出被提供给差分放大器（29）的求和输入端，源极（30）的输出端将差分输入端提供给差分放大器（29）。 根据惯例，将模数转换器（42）的输出提供给数字信号处理器（44）。

公开(公告)号：US4928315A

公开(公告)日：1990-05-22

申请号：US136063

申请日：1987-12-21

Applicant: Preben B. Jensen ,  Edward L. Arnn

Inventor： Preben B. Jensen ,  Edward L. Arnn

IPC: G01S7/292 ,  G01S7/493 ,  G01S13/28 ,  H03H19/00

CPC classification number: H03H19/00 ,  G01S7/4912 ,  G01S7/493

Abstract: A chirped backscatter filter 10 compares a received signal (RSIG) to a reference signal related to a transmitted signal (TSIG) and removes from RSIG the frequency component which is equal to TSIG in frequency. This removed frequency component corresponds to the frequency of the transmitter backscatter radiation. The filter of the invention adds a frequency offset (f.sub.n) to both RSIG and TSIG in mixers 12 and 14 before substracting one from the other in mixer 22. Thus, equal frequency components in both RSIG and TSIG, such as the backscatter radiation frequency component of RSIG, will equal f.sub.n. The frequencies resulting from this subtraction are thereafter passed through a notch filter 24 which is centered on f.sub.n and which passes all frequency components except f.sub.n. The output of the notch filter thus no longer has a frequency component associated with the backscatter frequency component. The loss of the RSIG phase reference due to the phase reference between the RSIG and TSIG modulation envelopes being destroyed during the backscatter filtering process is therafter compensated for by adding TSIG to the filtered difference frequency component, thereby reestablishing the phase relationship of the original RSIG frequency components minus the backscatter frequency component.

Abstract translation: 啁啾反向散射滤波器10将接收信号（RSIG）与与发射信号（TSIG）相关的参考信号进行比较，并从RSIG中去除频率上等于TSIG的频率分量。 该去除的频率分量对应于发射机反向散射辐射的频率。 本发明的滤波器在混频器12和14中的两个RSIG和TSIG之间增加一个频率偏移（fn），在混频器22中从另一个中减去一个频率偏移。因此，RSIG和TSIG中的相等的频率分量，例如反向散射辐射频率分量 的RSIG，将等于fn。 此减法产生的频率此后通过陷波滤波器24，陷波滤波器24以fn为中心，并通过除fn以外的所有频率分量。 因此，陷波滤波器的输出不再具有与后向散射频率分量相关联的频率分量。 通过在后向散射滤波处理期间被破坏的RSIG和TSIG调制包络之间的相位参考导致的RSIG相位基准的损失通过将TSIG加到经滤波的差分分量来进行补偿，由此重新建立原始RSIG频率的相位关系 分量减去反向散射频率分量。