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| Calculation Method for Seeker Angle Measurement Deviation in Field Tests Based on Linear Interpolation |
| WANG Wentao1，2， REN Bo1， HE Yongpeng2， XU Linpeng3，
MENG Liang2， ZHOU Ke2 |
| 1. Equipment Management & UAV Engineering College， Air Force Engineering University，
Xi'an 710051， Shaanxi， China； 2. A Unit of PLA， Jiuquan 735018， Gansu， China；
3. China Airborne Missile Academy， Luoyang 471009， Henan， China |
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Abstract The evaluation of missile angle measurement deviations (the elevation angle and azimuth angle of the target line-of-sight) is typically conducted in laboratories, where it is impossible to fully simulate the influences of external field environments, including temperature and vibration. To address the issue that traditional laboratory tests fail to actually reflect the external field environment and thus cannot evaluate the performance of seekers accurately, this paper proposes a method for calculating the angle measurement deviation of seekers in external field experiments based on linear interpolation. Focusing on the missile and target equipment data obtained from external field experiments, the research content involved calculating the seeker angle measurement deviation results from these experiments. The method first performed linear interpolation on the data to align their time frames. Secondly, a model of angle measurement deviation was established using the linearly interpolated data within the ground coordinate system. Finally, the spatial angle measurement deviation was obtained, which was the angle between the actual line-of-sight vector of the target and the measured vector of the missile. This method provides a firm reference for the subsequent calculation of seeker angle measurement deviations in missile external field experiments. Additionally, it can be combined with internal field experiments to evaluate the performance of seeker angle measurement jointly.
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Received: 02 July 2025
Published: 31 October 2025
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2025, Vol. 8 
