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发明授权
CN105547286B 一种复合三视场星敏感器星图模拟方法 有权 转让

一种复合三视场星敏感器星图模拟方法
摘要：
本发明公开一种复合三视场星敏感器星图模拟方法，包括如下步骤：步骤1、根据星敏感器的极限星等，选取符合要求的观测星，提取观测星的星号、星等、赤经、赤纬数据，存储为观测星数据库；步骤2、统计复合三视场星敏感器三个光学系统视场中的观测星，并计算观测星在所属的子系统坐标系中X、Y方向的入射角；步骤3、根据伪星总数，随机产生伪星的星等、视场位置数据；步骤4、通过光线追迹，模拟光学系统对各自视场内观测星和伪星的成像，计算像面信息；步骤5、计算数字星图每个像元的亮度，输出数字星图。本方法操作简便，不依赖于加工成型的硬件系统，成本低，可为复合三视场星敏感器其他技术研究提供丰富的模拟星图数据。
摘要（英）：

The invention discloses a composite three-view-field star sensor star map simulation method. The composite three-view-field star sensor star map simulation method comprises the following steps that step 1, an observation star meeting the requirements is selected according to the limiting magnitude of a star sensor, and star number, star magnitude, right ascension and declination data of the observation star is extracted and stored in an observation star database; step 2, statistics is conducted on observation stars in three optical system view fields of the composite three-view-field star sensor, and incidence angles of the observation stars in subsystem coordinate systems the observation stars belongs to in the X and Y directions are calculated; step 3, the star magnitude, view field position data of fake stars is randomly produced according to the total number of the fake stars; step 4, imaging of the observation stars and the fake stars within the respective view fields performed by an optical system is simulated through ray tracing, and image plane information is calculated; step 5, the brightness of each pixel of a digital star map is calculated, and the digital star map is output. The composite three-view-field star sensor star map simulation method is simple and convenient to operate and low in cost, does not depend on a hardware system formed through machining and can provide rich simulation star map data for other technical research of the composite three-view-field star sensor.

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