Tech Briefs

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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Simple Subset Wizard

The Simple Subset Wizard (SSW) was developed for the Earth Observing System Data and Information System (EOSDIS) to simplify the myriad ways of ordering or obtaining subsets of satellite data from EOSDIS’ different data centers. It provides a simple, coherent interface to a variety of subsetters at ten of the centers. The SSW has an additional advantage in shortening the user’s work-flow to obtain subsets by handling the search for individual files (and subsequent selection) behind the scenes.

Posted in: Physical Sciences, Software, Briefs

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FlightMechanic

FlightMechanic is an application for the Apple iPhone 3GSM family that replaces many components of the popular Pratt & Whitney aerospace handbook, including a standard atmosphere model, airspeed calculations, and Rankine-Hugoniot relationships (Mach tables).

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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.

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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.

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Software for Executing International Standard CCSDS 123B

Advanced remote-sensing instruments in recent years often employ multiple wavelengths for maximal science return. Many of them comprise hundreds to over a thousand spectral bands. These instruments multiply the data volume and stress the communication bandwidth. With previously deployed space lossless data compression standards only applicable to individual bands, a need exists to further improve performance by using spectral information.

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