Telemetry, tracking and command consolidation in NASA's Deep Space Network
This paper describes the new architecture, implementation, and lessons learned in the Deep Space Network Simplification Project.
telemetry command tracking ranging↗
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Results for “Commanding”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Telemetry, tracking, and command consolidation in the Deep Space Network
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telemetry command tracking ranging↗
An Open Systems Architecture of a Standardized Command Interface Chip-Set for Spacecraft
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Command Interface ASIC (CIA) Analog Interface ASIC↗
A Multi-Mission Operations Strategy for Sequencing and Commanding
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Multi-Mission Operations Strategy sequencing comma↗
A Muli-Mission Operations Strategy for Sequencing and Commanding
The Telecommunications and Mission Operations Directorate (TMOD) of the Jet Propulsion Laboratory is responsible for development, maintenance and operation of flight operations systems for several classes of science missions planned for the next several years.
sequencing commanding operations↗
Industrial Protocols for Spacecraft Command and Control
A standard data interface for spacecraft and intelligent spacecraft devices will have a major impact on the cost of building and flying satellites. The Space Messaging Service is a key element in a proposed 'open' standard for Space Project Mission Operations Control Architecture. The rationale for a messaging service is examined. Selection of specifications are discussed. Modifications are proposed.
Spacecraft Ground Systems Command and Control Mess↗
Telemetry, tracking, and command consolidation in the Deep Space Network
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tracking↗
Improved Operations Capabilities to Reduce the Risk of Command-Related Error
No abstract available
Model-based systems engineering (MBSE)↗
Robust, Radiation Tolerant Command and Data Handling and Power System Electronics from NASA Goddard Space Flight Center
The Goddard Modular Smallsat Architecture (GMSA) is developed at NASA Goddard Space Flight Center (GSFC) to address future reliability along with minimizing cost and schedule challenges for NASA Cubesat and Smallsat missions.
linear sequential full shunt control↗
ISS Science Payload Command & Data Handling
For decades, the International Space Station (ISS) has provided a distinctive platform in low Earth orbit for experimental research. In support of this platform is a family of avionics systems that enables reliable data distribution of the many science payloads installed, and future internal and external payloads. This poster provides an update to the ISS avionics hardware system architecture, including design change successes, test bed architecture, and performance upgrades in the operation of all ISS avionics. We conclude with an outlook on future avionics system enhancements required to support additional modules and payload expansions taking place on the ISS, and how these avionics systems translate to a lunar gateway.
1553↗
A hierarchical gray-box dynamic modeling methodology for direct-expansion cooling systems to support control stability analysis; Méthodologie de modélisation dynamique hiérarchique de type boîte grise pour les systèmes de refroidissement à détente directe afin de soutenir l'analyse de stabilité de la commande
In this paper, a gray-box dynamic modeling approach for direct-expansion cooling systems is presented. The overall approach incorporates a multi-stage training procedure that consists of 1) identification of component sub-models from quasi-steady-state performance data, 2) system model integration with estimation of refrigerant charge and 3) fine tuning of thermal capacitances of the evaporator and condenser to capture the system dynamic responses. Compared to traditional physics-based models, the proposed modeling approach has advantages including reduced engineering efforts in the model development phase, improved computational efficiency and enhanced prediction accuracy. The modeling method was validated using a 3-ton variable-speed heat pump and proved to be capable of accurately predicting the system transient behaviors over a wide range of operating conditions. The established dynamic model was then applied for control stability analysis, with a specific goal of determining a proper control execution time step. The case study results showed that the stable control execution time step could change significantly, from 3 sec to 19 sec, as the operating conditions and control settings vary, and a proper selection of the execution time step is critical to ensure stable and reliable operations.
42 ENGINEERING↗
Gene commander in the trash heap: Transcriptional regulation and ubiquitination modification mediated by RNF6 in carcinogenesis
Highlights: • Reveal the dysregulation of RNF6 in cancer. • Describe the molecular function of RNF6. • Summarize the molecular mechanism mediated by RNF6. RING finger protein 6 (RNF6), a RING finger protein, has been identified as a potential tumor promoter in several cancers. However, the exact mechanism of RNF6 in cancer remains elusive. As in various diseases, RNF6 may be involved in regulating cell growth, cell proliferation, invasion, cell cycle progression, apoptosis and cell adhesion through E3 ligase-mediated ubiquitination. Thus, the research on RNF6 is mainly focused on the ubiquitination of RNF6 in recent years. This article summarizes the role of RNF6 ubiquitination in various physiological and pathological mechanisms, such as Akt/mTOR signaling pathway, Wnt/β-catenin pathway, RNF6/ERα/Bcl-xL axis, and provides knowledge and understanding for the treatment of diseases.
60 APPLIED LIFE SCIENCES↗
Command of three-dimensional solitary waves via photopatterning
Multidimensional solitons are prevalent in numerous research fields. In orientationally ordered soft matter system, three-dimensional director solitons exemplify the localized distortion of molecular orientation. However, their precise manipulation remains challenging due to unpredictable and uncontrolled generation. Here, we utilize preimposed programmable photopatterning in nematics to control the kinetics of director solitons. This enables both unidirectional and bidirectional generation at specific locations and times, confinement within micron-scaled patterns of diverse shapes, and directed propagation along predefined trajectories. A focused dynamical model provides insight into the origins of these solitons and aligns closely with experimental observations, underscoring the pivotal role of anchoring conditions in soliton manipulation. Our findings pave the way for diverse fundamental research avenues and promising applications, including microcargo transportation and optical information processing.
Science & Technology - Other Topics↗