Topic
Ring laser gyroscope
About: Ring laser gyroscope is a research topic. Over the lifetime, 2070 publications have been published within this topic receiving 18609 citations. The topic is also known as: Sagnac interferometer.
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Patent•
09 Mar 1994TL;DR: In this paper, a light source (1) sends light signals to the two ends of a fiber length (5) defining a closed path, which signals travel simultaneously along the fiber in both directions and are collected by a device (6) creating an electric signal representing their beat.
Abstract: of EP0585954In an optical fiber gyroscope, a light source (1) sends light signals to the two ends of a fiber length (5) defining a closed path, which signals travel simultaneously along the fiber (5) in both directions and are collected by a device (6) creating an electric signal representing their beat. Signals emitted from light source (1) are frequency modulated before they are sent to the fiber (5), and the rotation speed of a body to which the gyroscope is associated is obtained by measuring the frequency of said beat signal.
1 citations
Patent•
18 Jan 2019
TL;DR: In this article, a laser strap-down inertial measurement combined device is presented for aircraft speed and attitude measurement, which adopts the integrated design of an inertial assembly and an electrical system to comprehensively arrange a laser gyro, a quartz accelerometer and a circuit board so as to minimize the volume and reducethe weight.
Abstract: The invention relates to a laser strap-down inertial measurement combined device, and belongs to the technical field of aircraft speed and attitude measurement. The device provided by the invention adopts the integrated design of an inertial assembly and an electrical system to comprehensively arrange a laser gyro, a quartz accelerometer and a circuit board so as to minimize the volume and reducethe weight, and improves the overall heat dissipation performance to reduce and homogenize the influence of the heat source on the body combination so as to avoid the influence of the thermal characteristics on the output precision of the laser gyro and the quartz deceleration meter. In order to make full use of the space installation on the inertia assembly and since the component surface directly face the side wall of the outer casing, the heat can be dissipated by radiation and air convection/conduction; the inertial assembly is located in the center of the laser strap-down inertial measurement combination device, circuit systems located at the upper part and lower part can heat evenly, which reduces the temperature gradient in the inertial body region.
1 citations
Journal Article•
TL;DR: In order to meet the requirement of marine laser gyro inertial navigation system, a navigation computer system based on the DSP chip named TMS320C6713B and FPGA and the communication between DSP and peripheral equipment is accomplished.
Abstract: In order to meet the requirement of marine laser gyro inertial navigation system,this paper designs a navigation computer system based on the DSP chip named TMS320C6713B and FPGABy using FPGA,the count functions of the signal of laser gyro and the output signal of accelerometers are realized,and the communication between DSP and peripheral equipment is accomplishedThis system has the structure of single CPU using TMS320C6713B as the coreIt can do operation with 64 bit precision and high speed and meet the needs of real-time performance
1 citations
Patent•
15 Oct 2004TL;DR: In this paper, a system for detecting radiation events in a ring laser gyro is presented, which includes one or more photodetectors that produce photocurrent signals to monitor the ring LM gyro.
Abstract: A system for detecting radiation events in a ring laser gyro is provided. The system includes one or more photodetectors, that produce photocurrent signals to monitor the ring laser gyro. Further, the system includes one or more comparator circuits actuating at one or more thresholds. The one or more comparator circuits are responsive to the photodetectors to detect when a radiation event occurs based on the photocurrent signal. The system further includes a path length control circuit responsive to the one or more comparator circuits, that restores operating conditions for the ring laser gyro when a radiation event occurs.
1 citations
Patent•
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21 May 2001
TL;DR: In this article, a ring laser gyroscope semiconductor structures and methods for making such structures are provided, and the integrated structure includes a substrate (1200) on which a beam splitter region (1220), a waveguide (1290), a photodetector (1295), and preferably a laser (1298) are provided.
Abstract: Ring laser gyroscope semiconductor structures and methods for making such structures are provided. The integrated structure includes a substrate (1200) on which a beam splitter region (1220), a waveguide (1290), a photodetector (1295), and preferably a laser (1298) are provided. An integrated circuit (1299) for processing data generated by the photodetector can also be included. By detecting the fringe pattern with an array of photosensitive elements, the data can be fit to a mathematical model of the interference pattern. The fit is then used to determine one or more rotational parameters.
1 citations