星载太阳辐照度光谱仪短时高精度太阳预报  

High-Precision and Short-Time Solar Forecasting by Spaceborne Solar Irradiance Spectrometer

作　　者：李占峰[1] 王淑荣[1] 黄煜[1] 林冠宇[1] 邵英秋 于淼[2] Li Zhanfeng;Wang Shurong;Huang Yu;Lin Guanyu;Shao Yingqiu;Yu Miao(State Key Laboratory of Applied Optics,Changchv/n Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun,Jilin 130033,China;Load and Ground Application Technology Laboratory,Shanghai Institute of Satellite Engineering,Shanghai 200240,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033 [2]上海卫星工程研究所载荷与地面应用技术研究室,上海200240

出　　处：《光学学报》2019年第7期159-163,共5页Acta Optica Sinica

基　　金：国家自然科学基金(11573025)

摘　　要：为了在有限的太阳观测窗口内获得高质量的太阳光谱数据,需保证太阳进入观测窗口时仪器已完成自身预热。为保证仪器预热时间的一致性,需在轨实时预报预热开始时刻,需对每轨太阳开始进入仪器观测窗口的时间进行短时间高精度预报。详细介绍了一种由卫星平台当前广播时间和轨道瞬根推导预报时刻太阳角度的方法。利用该方法预报某一太阳同步轨道卫星本体坐标系下的太阳角度,并将预报结果与STK仿真结果进行比对。该预报方法在预热时间内的最大角度误差为0.5°,导致预热时间最大偏差为20 s,满足1 min的指标要求。分析了预报方法中的主要误差来源,为后续卫星载荷的在轨太阳角度短期预报提供了借鉴与参考。In order to obtain high accuracy solar spectral irradiance in a limited sun observation window, it is necessary to ensure that the instrument has completed warm-up when the sun enters the observation window. The start time of warm-up can be predicted in real time to ensure the consistency of the warm-up. Therefore, a short-time high-precision forecast is made for the time when the sun begins to enter the instrument observation window. A method for predicting the solar angle from the current broadcast time of the satellite platform and the instantaneous root of the orbit is described in detail. Using this method, we calculate the solar angle of a sun-synchronous orbit. Te calculated results are compared with the STK simulation, indicating that the maximum angle error of the proposed forecasting method is 0.5° during the warm-up period. The maximum deviation of the warm-up time caused by the angle error is 20 s, which meets the requirement of 1 min. The main error sources of the proposed method are analyzed, which provides reference for on-orbit short-term solar angle forecast of other satellite loads.

关 键 词：测量 太阳角度预报 太阳同步轨道 轨道瞬根 太阳辐照度光谱仪 

分 类 号：P135[天文地球—天体力学] TP732[天文地球—天文学]