The time-modulated Fourier transform spectrometer completes spectral detection through the scanning mirror movement. To satisfy the t of low-speed and high-precision scanning, a linear quadratic optimal controller with minimum relative performance error is proposed. The ratio of the tracking error weighting factor Q and the energy consumption weighting factor R in the optimal controller is optimized by simulation, and when the ratio is 1:2, the speed instability of the scanning mirror in the uniform speed section is 2‰.
It is widely used to correct the atmospheric and surface emissivity by using the split window algorithm to eliminate the atmospheric influence through the combination of the measured values of two adjacent channels (10.3-12.5 m) In the thermal infrared remote sensing inversion of surface temperature. With the increasing demand for split-window spectral data, the development of space optical remote sensors with these two spectral bands has gradually increased in recent years. High-resolution 5 full-spectrum spectral imager is a typical example. Its spatial resolution of thermal infrared split-window spectral band reaches 40m, which is an international advanced level. A large number of studies have shown that the thermal infrared splitting window is very sensitive to the focal plane temperature. With the change of the focal plane temperature, the imager output digital signal varies greatly. For example, when the focal plane temperature changes 0.1K, the 10.3-11.4m spectral band changes 0.02V (equivalent to 13.6DN), 11.5-12.5m spectral band changes 0.006V (equivalent to 4.08DN), so the temperature of FPA must be corrected or controlled strictly.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.