In-orbit lunar imaging and analysis for optical remote sensing satellite
| Autor: | Yongchang Li, Chunling Lu, Zhaoguang Bai |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Time delay and integration
Multispectral image Astrophysics::Instrumentation and Methods for Astrophysics Lunar observation Physics::Geophysics Panchromatic film Attitude control Computer Science::Computer Vision and Pattern Recognition Physics::Space Physics Calibration Orbit (dynamics) Satellite Astrophysics::Earth and Planetary Astrophysics Geology Remote sensing |
| Zdroj: | Sensors, Systems, and Next-Generation Satellites XXIII. |
| DOI: | 10.1117/12.2532019 |
| Popis: | This optical remote sensing satellite has a high-resolution PMS camera, which has a panchromatic band (PAN) and four multispectral bands (MS). The PMS camera do not contain onboard calibration subsystem. So, the satellite is designed to allow a three-axis attitude control system pointing the camera to the lunar. Through the lunar imaging, the cameras’ long-term stability of the radiances is hope to be evaluated. The lunar is known as an excellent radiometric reference because of the stable reflectance of its surface in the visible and near-infrared spectral regions. It is the nearest planet to the earth. In orbit lunar imaging does not rely on ground calibration site and weather. Although earth-orbit satellite lunar observation is efficient to monitoring camera’s radiation performance or achieving absolute radiation calibration, attitude control and imaging parameters matching problem should be solved. Some key points of lunar imaging were proposed to solve the mismatch of integration time and push-broom velocity. In addition, this paper summarizes the improved scheme for lunar imaging, obtains clear images at different lunar phase angles, and shows the preliminary results of the geometric parameters and irradiance of the lunar observation. It has accumulated experience in the follow-up satellite lunar observation. |
| Databáze: | OpenAIRE |
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