This paper conducts an analysis and reflection on the architecture of high-throughput satellite communication technology. Ensuring security protection, it leverages the infrastructure advantage of the civil HTS networ...
详细信息
Fibertek has developed a lunar orbiter–based optical communications terminal for NASA’s Artemis lunar orbiter and small satellite science missions. The terminal is designed to support lunar and Heliophysics missions...
详细信息
This paper presents the design of a semiconductor laser power measurement circuit for specific wavelength and emission angle. The design encompasses three main components: a free-space optical power meter positioning ...
详细信息
Ghost images refer to unwanted secondary images or reflections that appear alongside the primary image, causing interference or reducing image quality. These ghost images are caused by multiple reflections of in-field...
详细信息
ISBN:
(纸本)9781510673571;9781510673564
Ghost images refer to unwanted secondary images or reflections that appear alongside the primary image, causing interference or reducing image quality. These ghost images are caused by multiple reflections of in-field imaging rays within the optical system. We have developed a methodology for comprehensive modeling and analysis of ghost images produced within a catadioptric multi-spectral imaging systems. Instead of characterising these ghosts as mere points of light, we conducted a detailed qualitative and quantitative examination of the ghost reflections. We identify cross-talk ghost as a significant issue, even with low surface reflection coefficients. By identifying major contributors, the study enables the formulation of robust mitigation strategies. Our methodology includes generating ghost layouts, identifying primary contributors, and precisely quantifying the flux stemming from these ghost reflections. Furthermore, we introduced multiple strategies for reducing ghost reflections, culminating in the design of a Ghost Blocker Plate engineered to effectively counteract ghost reflections. A series of meticulously planned experiments was conducted to validate our developed methodology. As a result, we successfully demonstrated a substantial reduction in ghost reflections within an optical system, reducing them from an initial level of 23% to less than 1%.
A design method for optimizing the shape and size of concrete pumping pipes is proposed to address practical engineering challenges. Initially, various cross-sectional shapes for the pipeline were designed to improve ...
详细信息
In order to accurately depict V2V MIMO channel characteristics in urban street scenes, a new 3D random channel model based on geometry is proposed, and the simulation model is derived. The model comprehensively consid...
详细信息
This research proposes a novel design for an 8-X compact zoom lens imaging system that outperformed existing state-of-the-art designs in terms of the visual and quantitative performance metrics examined. In order to s...
详细信息
In the context of planetary exploration, the MIMOS ii (miniaturised Mössbauer spectrometer) has proven to be a reliable measuring instrument with a service life of several years, including on Mars. This paper dea...
详细信息
This paper proposes an articulated and coordinated scheduling method containing long-period trend-guided benefits and short-period real-time precise control for large-scale scenery systems, investigates four time-scal...
详细信息
This paper presents an integrated approach to enhancing situational awareness and decision-making in dynamic environments by combining optical-flow-based Markov Decision Processes (MDP) with physics-based simulations ...
详细信息
暂无评论