Aerospace Sensor Systems and Applications

Abstract

Library of Congress Cataloging-in-Publication Data Merhav, Shmuel.Aerospace sensor systems and applications / Shmuel Merhav. p. cm. Includes bibliographical references and index.

Applying the Holistic Approach to the Physical Sciences and Engineering Systems

“…Our third example is a vertical gyro (see a detailed description in (Merchav, 1996). A vertical gyro is a device used to measure the pitch (ө) and roll…”

A comparison of different guidance schemes for a direct fire rocket with a pulse jet control mechanism

“…The IMU estimates the position, orientation, and velocity of the rocket by numerically integrating kinematic and dynamic equations. Merhav [5] provides details on conventional IMU dynamic equations. Accuracy of the IMU is largely dependent on two factors, namely, accuracy of the initial position, orientation, and velocity used by the IMU as it begins to integrate the dynamics equations and errors in the accelerometers and gyroscopes.…”

“…Thus, A YC is given by equation (5). In the vertical plane, a parabolic guidance law is employed to determine command acceleration in the vertical LOS plane to compensate for trajectory bending due to rocket weight.…”

Evaluation of Distance Measurement Accuracy by Odometer for Pipelines Pigs

“…Nevertheless, the odometer can achieve a precision over a measured distance of only 0.5% between reference points 1) . INS can measure the distance, but the inertial sensors can cause significant errors because of drift during long periods (several days) of operation 2) . The magnetic reference station, with its location determined by the Global Positioning System (GPS), allows higher precision in the location of anomalies.…”