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Gridded Atmosphere Products from GPS Radio Occultation Measurements with Bayesian Interpolation Technique

NASA’s Jet Propulsion Laboratory, Pasadena, California GPS radio occultation measurements are vital for climate monitoring and atmospheric temperature change detection. However, the data are irregularly distributed in space and time, which makes it inconvenient for many applications.

Posted in: Test & Measurement, Software, Briefs, TSP

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Goddard Mission Services Evolution Center Compliance Test Suite

Goddard Space Flight Center, Greenbelt, Maryland To reduce the cost of building specialized interfaces, missions can adopt Goddard Mission Services Evolution Center (GMSEC) technologies and applications. Assurances need to be made that application implementation should follow the GMSEC messaging standards. The GMSEC Interface Specification Document (ISD) sets forth definitions for all GMSEC message types.

Posted in: Test & Measurement, Software, Briefs, TSP

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NASA Experiment Designer: A Tool for Running Scientific Workflows

The NASA Experiment Designer (NED) is a client-server application that enables end-to-end support for driving long-running scientific computer simulations such as climate and weather models. The tool provides a friendly, single point of entry for configuring parameters associated with the workflow for model experiments and related preprocessing/postprocessing tasks.

Posted in: Software, Briefs, TSP

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SensorWeb Campaign Manager API Client

This software was designed to automate delivery of tasking requests to a central queue, enabling integrated observation scenarios across multiple assets. It is a JAVA code application that enables machine-to-machine access between a client platform and the Campaign Manager application program interface (API) to post tasking requests for satellites that the Campaign Manager can access. The Campaign Manager tasks satellites via moderated tasking queue in which the operations team allows or denies requests.

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Kameleon-Plus: Data Access, Interpolation, and Fieldline Tracing Library for Space Weather Simulation Data

This library provides an abstraction layer that an end user can access, interpolate, and perform fieldline integration for space weather simulation data. Normally, accessing and interpolating space weather simulation data requires knowledge of the model-specific data formats, spatial and temporal grids, coordinate transformations, and units conversions. This library handles all of that for the user, allowing the user to use simple standard calls to perform the same action across models. The fieldline tracer lets users perform fieldline integration without needing a file reader. The Kameleon-Plus library also abstracts out the file format, allowing several standardized file formats to be used, instead of the model specific binary files.

Posted in: Software, Briefs

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Software for Lossless Data Compression

Lossless data compression has been employed in space to reduce communication bandwidth requirements for onboard storage for more than 15 years. A widely used space compression standard is the recommendation published by the Consultative Committee on Space Data Systems (CCSDS). The standard describes a simple, efficient, lossless compression scheme that can be applied to data generated from various space instruments such as radiometers, gamma ray detectors, and optical sensors.

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Asynchronous Message Service (AMS) Software Libraries

This software implements the protocols described in the Consultative Committee for Space Data Systems (CCSDS) publication CCSDS 735.1-B-1. The purpose of the protocols is to enable the exchange of messages among a group of applications. The protocols provide several mechanisms for message exchange, including publish/subscribe (i.e., the source of a message specifies a subject, and the message is delivered to all members who have subscribed to that subject) and direct send (i.e., the source of a message specifies a particular member for whom to deliver the message). One of the protocols (Meta-AMS) supports a local community of applications. Another protocol (Remote-AMS) provides a gateway mechanism that connects multiple local message communities together, enabling a publish/subscribe capability between communities that, for example, might be on different planets.

Posted in: Software, Briefs, TSP

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