Topic
Inertial reference unit
About: Inertial reference unit is a research topic. Over the lifetime, 1306 publications have been published within this topic receiving 22068 citations. The topic is also known as: IRU.
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01 Jul 1973
TL;DR: In this article, a complete description of the development and initial evaluation of the Strapdown Inertial Reference Unit (SIRU) system is reported, with the analytic formulation for fault detection and isolation processing structure, hardware redundancy design and individual modularity features.
Abstract: A complete description of the development and initial evaluation of the Strapdown Inertial Reference Unit (SIRU) system is reported. System development documents the system mechanization with the analytic formulation for fault detection and isolation processing structure; the hardware redundancy design and the individual modularity features; the computational structure and facilities; and the initial subsystem evaluation results.
3 citations
TL;DR: Errors of a strapdown inertial navigation system (INS) based on navigation grade fiber-optic gyros (FOG) are studied, with the INS measurement unit performing modulation rotation about the axis orthogonal to the vehicle deck.
Abstract: Errors of a strapdown inertial navigation system (INS) based on navigation grade fiber-optic gyros (FOG) are studied, with the INS measurement unit performing modulation rotation about the axis orthogonal to the vehicle deck. The main focus is made on the problem of reducing the time of gyro in-run drifts calibration, using the GNSS data when the INS is turned on. In addition to velocity and position measurements taken by the GNSS, phase measurements from antennas spaced on a certain baseline are included.
3 citations
TL;DR: In this article, an inertial navigation system containing a versatile computer can be given the capability of automatically measuring its gyro mass unbalance using regression-analysis techniques that minimize errors of extraneous origin.
Abstract: An inertial navigation system containing a versatile computer can be given the capability of automatically measuring its gyro mass unbalance. These measurements are accomplished in tests performed and monitored by the computer. Mass-unbalanced drifts induced by tilting the stable platform are detected by the system's acceleration sensors. From the outputs of these sensors, the computer determines the mass-unbalance components using regression-analysis techniques that minimize errors of extraneous origin.
2 citations
TL;DR: In this article, a vector equation is derived from first principles to describe the mechanization of inertial navigation systems for use anywhere in space and a specialized form of this equation applies directly to three-dimensional motion at any speed, any altitude, over an elliptical, rotating earth.
Abstract: A vector equation, which is derived from first principles, describes the mechanization of inertial navigation systems for use anywhere in space A specialized form of this equation applies directly to three-dimensional motion at any speed, any altitude, over an elliptical, rotating earth The usefulness of this equation is illustrated by working out an example of a system design Behavior of errors in inertial systems is also discussed
2 citations
Journal Article•
TL;DR: In this paper, under the condition of moving base, the general ψ、φ angle error models of the gimbaled inertial navigation system (INS) are presented in detail.
Abstract: The error models are very important in the error analysis and fault detection of inertial navigation system(INS).In this paper,under the condition of moving base,the general ψ、φ angle error models of the gimbaled INS are presented in detail,and the general ψ、φ angle error models of GINS are also addressed.
2 citations