基于到达信号强度的空中目标辐射源定位方法

发布时间：2018-02-28 08:11

本文关键词： 空中目标辐射源定位无源定位多站定位到达信号强度多元线性回归　出处：《计算机应用》2017年S1期 　论文类型：期刊论文

【摘要】：针对空中目标辐射源的定位问题,根据电磁波在空间中传输的距离与所产生损耗的关系,提出一种基于到达信号强度的多站无源定位方法。该方法假设特定频率的信号只来自于某未知的空中目标,并需要在某区域内随机分布5个以上观测点,用以同步监测特定频率的电磁波信号强度。根据监测的信号强度,利用多元线性回归的方法即可推算出未知目标的经度、纬度、高度及信号强度。信号噪声、目标运动速度、各观测点监测时间误差和观测点位置误差将降低发现目标的成功率,而观测点数量的增加可提高发现目标的成功率。定位的精度则主要受目标运动速度、观测点监测时间误差及观测点位置误差的影响,这几项因素值越小,定位误差越小。仿真结果表明,该方法适用于发现和定位低速运动的空中目标辐射源。
[Abstract]:According to the relationship between the distance of electromagnetic wave in space and the loss caused by the location of the emitter source of the target in the air, A multi-station passive location method based on the intensity of the arrival signal is proposed, which assumes that the signal of a given frequency is only from an unknown aerial target and needs to be randomly distributed at more than five observation points in a certain region. According to the monitored signal intensity, the longitude, latitude, height, signal intensity, signal noise, moving velocity of unknown target can be calculated by using multiple linear regression method. The monitoring time error and the observation point position error of each observation point will reduce the success rate of finding the target, and the increase of the number of observation points can increase the success rate of the target detection. The accuracy of location is mainly due to the moving speed of the target. The influence of observation point monitoring time error and observation point position error, the smaller the value of these factors, the smaller the positioning error. The simulation results show that this method is suitable for the detection and localization of low speed moving air target emitter.
【作者单位】：中国电子科技集团公司第三十三研究所;
【分类号】：TN95

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