A Meteor and ionospheric Irregularity Observation System (MIOS) - optical subsystem, which currently consists of 26 video cameras (4 spectrographs) at two stations Sanya (18.3°N, 109.6°E) and Ledong (18.4°N, 109°E) separated by about 70 km was developed. One of the major goals of MIOS is to study how the entry of meteoroids into the Earth’s atmosphere changes the ionosphere through combining measurements of optical meteor with radar specular and non-specular meteor echoes and ionospheric irregularity echoes. This paper outlines the MIOS optical subsystem design for optical meteor detecting and methods for inferring physical and chemical properties. The spectrum and common volume optical trail observations from the two stations allow identifying emissions from meteor and atmospheric species, and calculating the meteor velocity, trajectory and orbital parameters. Preliminary results of meteors detected by the MIOS optical subsystem during July-August 2019 are presented and discussed.

一个流星和电离层不规则观测系统（MIOS）——光学子系统，目前由三亚（18.3°N，109.6°E）和乐东（18.4°N，109°E）两个站的26台摄像机（4个光谱仪）组成开发了约70公里。MIOS 的主要目标之一是通过将光学流星测量与雷达镜面和非镜面流星回波以及电离层不规则回波相结合，研究流星体进入地球大气层如何改变电离层。本文概述了用于光学流星探测的 MIOS 光学子系统设计和推断物理和化学特性的方法。两个站的光谱和公共体积光学轨迹观测可以识别流星和大气物种的排放，并计算流星速度，轨迹和轨道参数。介绍和讨论了 MIOS 光学子系统在 2019 年 7 月至 8 月期间探测到的流星的初步结果。