Paper Info
Title
A High-Spin Rate Measurement Method for Projectiles Using a Magnetoresistive Sensor Based on Time-Frequency Domain Analysis.
Abstract
Traditional artillery guidance can significantly improve the attack accuracy and overall combat efficiency of projectiles, which makes it more adaptable to the information warfare of the future. Obviously, the accurate measurement of artillery spin rate, which has long been regarded as a daunting task, is the basis of precise guidance and control. Magnetoresistive (MR) sensors can be applied to spin rate measurement, especially in the high-spin and high-g projectile launch environment. In this paper, based on the theory of a MR sensor measuring spin rate, the mathematical relationship model between the frequency of MR sensor output and projectile spin rate was established through a fundamental derivation. By analyzing the characteristics of MR sensor output whose frequency varies with time, this paper proposed the Chirp z-Transform (CZT) time-frequency (TF) domain analysis method based on the rolling window of a Blackman window function (BCZT) which can accurately extract the projectile spin rate. To put it into practice, BCZT was applied to measure the spin rate of 155 mm artillery projectile. After extracting the spin rate, the impact that launch rotational angular velocity and aspect angle have on the extraction accuracy of the spin rate was analyzed. Simulation results show that the BCZT TF domain analysis method can effectively and accurately measure the projectile spin rate, especially in a high-spin and high-g projectile launch environment.
Year
DOI
Venue
2016
10.3390/s16060894
SENSORS
Keywords
Field
DocType
spin rate measurement,high-spin projectile,magnetoresistive sensor,time-frequency domain analysis method
Domain analysis,Artillery,Spin-½,Angular velocity,Simulation,Electronic engineering,Magnetoresistance,Chirp,Engineering,Acoustics,Projectile,Window function
Journal
Volume
Issue
ISSN
16
6.0
1424-8220
Citations 
PageRank 
References 
4
0.67
9
Authors
4
Name
Order
Citations
PageRank
Jianyu Shang171.11
Zhi-Hong Deng218523.33
Mengyin Fu381460.59
Shunting Wang441.35