Interferometric imagers need to measure the phase, modulus, and spatial frequency coordinates of the complex coherence factor to reconstruct images. However, these three measurement parameters are accompanied by certain measurement errors in the actual imaging process, thereby affecting the quality of the reconstructed image. Based on the checkerboard integrated optical imaging system, we simulate the influence of measurement errors of the complex coherence factor on the imaging performance of the integrated optical interferometric imager. The simulation results show that, on the premise that measurement errors follow the normal distribution, the modulus measurement error does not significantly reduce the quality of the reconstructed image, whereas the phase and spatial frequency coordinate measurement errors have a great impact. When the mean value of the phase measurement error is 0, the standard deviation must be <0.18π to ensure the high quality of the reconstructed image. For the measurement error of the spatial frequency coordinates, when the standard deviation of the lenslet position errors is <0.075 times the shortest baseline length, its influence on the quality of the reconstructed image is acceptable. The simulation results are of great help to the engineering, manufacturing, and application of integrated optical interferometric imaging technology.
"Off-axis three-mirror anastigmatic telescope without middle image" and "off-axis three-mirror anastigmatic telescope
with one middle image" are both popular in space remote sensing. Working tolerances are analyzed deeply in both
configurations. Compared with "off-axis three mirrors anastigmatic telescope without middle image", "off-axis three
mirrors anastigmatic telescope with one middle image" has bad working tolerances.
TMA (Three Mirrors Anastigmatic) can simplify the configuration of telescope and lighten the weight, so it is very
popular to the design of space-based optical system. According to this concept, an off-axis unobstructed TMA is
calculated. Based on initial configuration parameters, automatic optimization is executed in ZEMAX program, and a new
telescope is obtained with parameters as follow: aperture is 2000mm, f/number is 2.25, FOV is 5°, angular resolution is
better than 7 μrad and image quality meets limited performances.
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.