Fire Control Correction and Line-of-sight Filtering Prediction of Lightweight Ballistic Calculation System

doi:10.12382/bgxb.2022.0738

Abstract

Abstract:

A ballistic calculation system and fire control correction method for ultralight and multiple small arms are proposed to reduce the preparation time and improve the accuracy of shooting. A model of gun-aiming-firing is established. The basic modules of fire control elements, real-time perception, multiple weapons, and interaction and data management are planned. A fire control correction software architecture based on domestic calculation platform is proposed. Through the integrated system design, the total weight is only 394g. Nonlinear extended Kalman filter is proposed to solve the problems of graphic display lag, firing device delay and sensor noise. Its error compensation effect is 53.1% better than that of the standard uniform acceleration prediction and compensation method. 600-meter field shooting experimental test was set up for group comparison test for beginners. The results show that the system can make a novice quickly master the essentials of shooting through the optical sight after short training. The aiming deviation is 1.15mm in azimuth and 0.9mm in pitch. It can reduce the dependence of light weapon shooting on personal experience and improve the long-distance shooting ability of a novice.

Key words: ballistic calculation system, small arms, fire control correction, extended Kalman filter, aiming deviation

CLC Number:

TP273

SHEN Cheng, ZHANG Lianchao, ZHANG Zhuo, ZHU Wenliang, CHEN Yukang. Fire Control Correction and Line-of-sight Filtering Prediction of Lightweight Ballistic Calculation System[J]. Acta Armamentarii, 2024, 45(2): 429-442.

Figures/Tables 17

References 22

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解算系统	质量/g
以色列SMASH2000	980
比利时FN Elity	>400
美国Brashear	1600
国产某型	1300
本文设计	394

解算系统	质量/g
以色列SMASH2000	980
比利时FN Elity	>400
美国Brashear	1600
国产某型	1300
本文设计	394

指标	数值
抖动时间/s	60
俯仰方向抖动幅值/mm	±0.5
方位方向抖动幅值/mm	±0.65
俯仰方向抖动角速度幅值/((°)·s^-1)	0.1
方位方向抖动角速度幅值/((°)·s^-1)	0.2
抖动频率/Hz	1.5 (低频小幅值抖动)

指标	数值
抖动时间/s	60
俯仰方向抖动幅值/mm	±0.5
方位方向抖动幅值/mm	±0.65
俯仰方向抖动角速度幅值/((°)·s^-1)	0.1
方位方向抖动角速度幅值/((°)·s^-1)	0.2
抖动频率/Hz	1.5 (低频小幅值抖动)

指标	参数	指标	参数
瞄准时间/s	15	β/mm	0.138
采样频率/Hz	25	δ/%	53.1
α/mm	0.26