| 天文导航光电测星能力的计算方法 |
| |
| 引用本文： | 陆光宇,李忠.天文导航光电测星能力的计算方法[J].光学与光电技术,2013,11(2):52-55. |
| |
| 作者姓名： | 陆光宇 李忠 |
| |
| 作者单位： | 1. 海军装备部电子部,北京,100841
2. 华中光电技术研究所—武汉国家光电实验室,湖北武汉,430223 |
| |
| 摘 要： | 天文导航可全面地提供位置、航向、姿态和速度等核心导航信息,特别是在复杂电磁环境下,发挥着独特的重要作用。测星能力是天文导航设备的核心指标之一,提出了光电通道测星的信噪比和调制度的计算公式和参数选取说明,给出了短波红外测星设备的计算实例和实测结果,结果表明短波红外测星可显著延长测星时段。
|
| 关 键 词： | 天文导航 星等 信噪比 调制度 短波红外 |
Calculation Method of Star Sensing Capability Provided by Optronic Sensor for Celestial Navigation Devices |
| |
| LU Guang-yu,LI Zhong.Calculation Method of Star Sensing Capability Provided by Optronic Sensor for Celestial Navigation Devices[J].optics&optoelectronic technology,2013,11(2):52-55. |
| |
| Authors: | LU Guang-yu LI Zhong |
| |
| Institution: | 1 Electronic Department of the Navy Equipment, Beijing 100841, China; 2 Huazhong Institute of Electro Optics Wuhan National Laboratory for Optoelectronics, Wuhan 430223, |
| |
| Abstract: | Celestial navigation devices play an important role in navigation applications thanks to their ability to provide criti- cal navigation information such as position, course, attitude and speed, particularly in complex electromagnetic environment. Star sensing capability is one of key performance indications for celetial navigation devices. In this paper, formulae are derived for calculation of optronic channel star sensing SNR, and parameter selection method is proposed. It is shown by calculation and practical measurement on a SWlR star sensing device that the time interval for star sensing can be significantly prolonged by using SWIR star sensing technique. |
| |
| Keywords: | celestial navigation star magnitude SNR modulation depth SWIR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
