Principle Error Analysis of Four-light-screen Optical Target with Impact Coordinates Measurement under Oblique Incidence

doi:10.12382/bgxb.2023.0097

Abstract

Abstract:

In order to study the distribution law of the principle error of impact coordinate measurement for an obliquely incident projectile, a principle error model of impact coordinate measurement under oblique incidence is established according to the geometric structure of four-light-screen optical target. The distribution law of the principle errors at different impact positions and different incidence angles in the effective detection light-screen plane is studied. The influences on different dispersal radius and different shooting distances on the measurement principle error at the determined shooting position in engineering application are analyzed, and the correction formula for the measurement of impact coordinates is given. The shooting test was carried out. The results show that: the principle error inevitably exists when the flying projectile is obliquely incident, thus the impact coordinate should be corrected. At a certain shooting distance, the larger the gun’s dispersal radius is, the larger the principle error is; when the dispersal radius is determined, the principle error decreases with the increase in shooting distance; under the determination of shooting position, the measurement error of four-light-screen optical target is less than 1mm after using the correction formula.

Key words: external trajectory measurement, four-light-screen optical target, impact coordinates, error correction

CLC Number:

TJ012.3

LI Jing, SUN Zhonghui, NI Jingping, DUAN Chenxi, CUI Changqing. Principle Error Analysis of Four-light-screen Optical Target with Impact Coordinates Measurement under Oblique Incidence[J]. Acta Armamentarii, 2024, 45(6): 1965-1973.

Figures/Tables 17

References 20

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入射角度/(°)	Δz_dmin/mm	Δy_dmin/mm
1	5.09	5.35
2	10.18	10.7
3	15.23	16.06
4	20.39	21.43
5	25.51	26.81

入射角度/(°)	Δz_dmin/mm	Δy_dmin/mm
1	5.09	5.35
2	10.18	10.7
3	15.23	16.06
4	20.39	21.43
5	25.51	26.81

L/m	R/mm
L/m	50	100	200	300
50	0.54	1.08	2.15	3.23
100	0.27	0.54	1.09	1.63
200	0.14	0.27	0.55	0.82

L/m	R/mm
L/m	50	100	200	300
50	0.54	1.08	2.15	3.23
100	0.27	0.54	1.09	1.63
200	0.14	0.27	0.55	0.82

弹序	z_d	y_d	z_p	y_p	Δz	Δy	δz	δy
1	-64	-319	9	33	-73	-352	0	-1.8
2	-58	-343	14	6	-72	-349	1	1.2
3	-51	-343	22	7	-73	-350	0	0.2
4	-42	-334	32	17	-74	-351	-1	-0.8
5	-54	-338	19	11	-73	-349	0	1.2
均值	-53.8	-335.4	19.2	14.8	-73	-350.2	0	0