弹道学报2025，Vol.37Issue(1)：54-59,112,7.DOI:10.12115/ddxb.2023.12001
纯方位目标跟踪中相对距离的估计方法
Estimation Method for Relative Distance in Bearings-only Target Tracking
陈之曦 1王健1
作者信息
- 1. 南京理工大学 能源与动力工程学院,江苏 南京 210014
- 折叠
摘要
Abstract
Bearing-only target tracking estimates distance and velocity of target by using only line-of-sight elevation and azimuth angles relative to observation station.To solve the problem of insufficient observability of relative distance,the corresponding improvement methods were proposed for three cases.①For stationary targets with known initial-relative-distance,real-time distance can be calculated by using the velocity of observation station.②When targets move at constant velocity or initial-distance errors are significant,observability can be enhanced through specific maneuvers by the observation station.③If the relative altitude between the station and target is known,sufficient observability allows accurate distance estimation even for maneuvering targets.Simulations on stationary target,constant-velocity target and maneuvering targets reveal that the first method's error depends on initial value accuracy,while the second method's error is influenced by maneuver strategy and acceleration,causing a mean relative distance error of 5.26 m under designed conditions.For the third method,incorporating target maneuvers and measurement noise,Monte-Carlo simulations show root mean square errors(RMSE)of 0.81 m for relative distance and 0.95 m/s for distance rate,demonstrating robustness under complex cases.关键词
纯方位目标跟踪/可观测度/机动目标/卡尔曼滤波/蒙特卡洛仿真Key words
bearings-only target tracking/observability/maneuvering target/Kalman filtering/Monte-Carlo simulation分类
武器工业引用本文复制引用
陈之曦,王健..纯方位目标跟踪中相对距离的估计方法[J].弹道学报,2025,37(1):54-59,112,7.
