The invention provides a method for measuring latitude and longitude of a fire point sensor. The method comprises the following steps: determining an installation matrix and an installation position of a fire point detection sensor on a satellite; obtaining an azimuth vector and a fire point moment of an output fire point of the sensor in a reference mirror coordinate system of the sensor; storing satellite attitude data in the satellite computer, and obtaining satellite attitude information of the time corresponding to the fire point through table look-up; calculating a satellite orbit position at the moment, a conversion matrix of a satellite from a J2000 inertial coordinate system to a satellite orbit coordinate system, an age difference nutation matrix and a Greenwich fixed star hour angle at the moment according to the fire point moment; according to the satellite orbit information, the satellite attitude information and the sensor installation information of the fire point moment and the fire point orientation vector information output by the sensor, obtaining the position vector information of the earth center pointing to the ground fire point; and obtaining geographic latitude and longitude information of the fire point according to the position vector of the ground center pointing to the ground fire point. According to the method for measuring the longitude and latitude of the fire point, the practicability, the intelligence and the autonomy level of the sensor are improved.

    本发明提供了一种火点敏感器经纬度测定方法,包括确定火点检测敏感器在卫星的安装矩阵和安装位置;获得敏感器输出火点在敏感器基准镜坐标系中的方位矢量和火点时刻;卫星计算机存储有卫星姿态数据,通过查表得到火点对应时间的卫星姿态信息;根据火点时刻计算该时刻的卫星轨道位置、卫星从J2000惯性坐标系到卫星轨道坐标系的转换矩阵、岁差章动矩阵以及格林尼治恒星时角;根据火点时刻的卫星轨道信息、卫星姿态信息、敏感器安装信息、敏感器输出的火点方位矢量信息,获得地心指向地面火点的位置矢量信息;根据地心指向地面火点的位置矢量,获得火点的地理经纬度信息。本发明的火点的经纬度测定方法,提高了敏感器的实用性和智能化、自主化水平。


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    Titel :

    Method for measuring latitude and longitude of fire point sensor


    Weitere Titelangaben:

    一种火点敏感器经纬度测定方法


    Beteiligte:
    LIU JIE (Autor:in) / ZHANG TAO (Autor:in) / CHEN CHAO (Autor:in) / ZHOU JIANMIN (Autor:in) / WU RINA (Autor:in) / DENG LOULOU (Autor:in) / CHENG LI (Autor:in) / LIU TONG (Autor:in) / YANG XIAOLONG (Autor:in) / WANG ZIHAN (Autor:in)

    Erscheinungsdatum :

    2021-12-03


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B64G Raumfahrt , COSMONAUTICS