NASA Technical Reports Server (NTRS) 20130009450: RFI-SIM: RFI Simulation Package

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by  NASA Technical Reports Server (NTRS)

These programs provide this reacha- This software is available for commercial li-
bility information in an easy-to-use for- censing. Please contact Daniel Broderick of ION Configuration Editor
mat by combining the surface position the California Institute of Technology at The configuration of ION (Inter-
and orientation, arm kinematics, instru- [email protected]. Refer to NPO-47766. planetary Overlay Network) network
ment mounting, and instrument ap- nodes is a manual task that is complex,
proach angles. This software is also inte- time-consuming, and error-prone. This
grated into the ground data system and RFI-SIM: RFI Simulation program seeks to accelerate this job and
the automated processing pipelines. It Package produce reliable configurations.
understands the EDR and RDR file for- RFI-SIM simulates the RFI environ- The ION Configuration Editor is a
mats and metadata, and products tai- ment to estimate the interference model-based smart editor based on
lored for in situ surface operations. from terrestrial emitters into space- Eclipse Modeling Framework technol-
This work was done by Robert G. Deen, craft, or vice versa. A high-fidelity sim- ogy. An ION network designer uses this
Patrick C. Leger, Matthew L. Robinson, and ulation of the RFI environment has Eclipse-based GUI to construct a data
Robert G. Bonitz of Caltech for NASA’s Jet been developed by employing all an- model of the complete target network
Propulsion Laboratory. For more information, tenna-related and radar system-related and then generate configurations. The
contact [email protected]. parameters of multiple emitters, as data model is captured in an XML file.
This software is available for commercial li- well as that of the desired spacecraft. Intrinsic editor features aid in achieving
censing. Please contact Daniel Broderick of In the simulation, the real-time analy- model correctness, such as field fill-in,
the California Institute of Technology at sis of the interference and its effects on type-checking, lists of valid values, and
[email protected]. Refer to NPO-47731. error budgets of a desired radar system is suitable default values. Additionally, an
taken into account. This provides a reli- explicit “validation” feature executes cus-
able tool for radar system design to deal tom rules to catch more subtle model er-
JPL Space Telecommunica- with RFI issues and to evaluate the sensi- rors. A “survey” feature provides a set of
tions Radio System tivity of various parts of a radar system in- reports providing an overview of the en-
Operating Environment cluding antenna pattern, RF front-end tire network, enabling a quick assess-
A flight-qualified implementation of a and digital processing to RFI signals. ment of the model’s completeness and
Software Defined Radio (SDR) Operat- The simulator is capable of a high-fi- correctness. The “configuration” feature
ing Environment for the JPL-SDR built delity, complex, and real-time simula- produces the main final result, a com-
for the CoNNeCT Project has been de- tion of RFI environment. It is flexible plete set of ION configuration files
veloped. It is compliant with the NASA enough to be employed for various sce- (eight distinct file types) for each ION
Space Telecommunications Radio Sys- narios and for several NASA missions. node in the network.
tem (STRS) Architecture Standard, and RFI-SIM can perform the following in This work was done by Richard L. Borgen
provides the software infrastructure for support of radar system design and per- of Caltech for NASA’s Jet Propulsion Labora-
STRS compliant waveform applications. formance analyses: tory. For more information, contact
This software provides a standards-com- (cid:129) Error budget analyses due to RFI on a [email protected].
pliant abstracted view of the JPL-SDR space-borne radar system; This software is available for commercial li-
hardware platform. It uses industry stan- (cid:129) Sensitivity analysis of the various radar censing. Please contact Daniel Broderick of
dard POSIX interfaces for most func- parameters, as well as hardware specs, the California Institute of Technology at
tions, as well as exposing the STRS API in the presence of RFI; [email protected]. Refer to NPO-48209.
(Application Programming Int erface) (cid:129) Verification of the radar system design
required by the standard. This software at several stages of RF and digital com-
includes a standardized interface for IP ponents in order to evaluate their ro- Dtest Testing Software
components instantiated within a Xilinx bustness against RFI; This software runs a suite of arbitrary
FPGA (Field Programm able Gate (cid:129) Assistance in algorithm development software tests spanning various soft-
Array). for RFI detection and removal ap- ware languages and types of tests (unit
The software provides a standardized proach; level, system level, or file comparison
abstracted interface to platform re- (cid:129) Based on the available database, the tests). The dtest utility can be set to au-
sources such as data converters, file sys- RFI environment over North America tomate periodic testing of large suites
tem, etc., which can be used by STRS at L-band has been reliably and suc- of software, as well as running individ-
standards conformant waveform applica- cessfully simulated and validated so it ual tests. It supports distributing multi-
tions. It provides a generic SDR operat- can be used for L-band space-borne ple tests over multiple CPU cores, if
ing environment with a much smaller re- radars in the RFI environment; and available.
source footprint than similar products (cid:129) Estimation of the interference from The dtest tool is a utility program
such as SCA (Software Communications space-borne radars into terrestrial FAA (written in Python) that scans through
Architecture) compliant implementa- radars regarding FAA compatibility is- a directory (and its subdirectories) and
tions, or the DoD Joint Tactical Radio sues. finds all directories that match a cer-
Systems (JTRS). This work was done by Hirad Ghaemi and tain pattern (directory name starts with
This work was done by James P. Lux, Minh Curtis W. Chen of Caltech for NASA’s Jet “test_” or “test-”) and then executes
Lang, Kenneth J. Peters, Gregory H. Taylor, Propulsion Laboratory. Further information is any tests in that directory as described
Courtney B. Duncan, David S. Orozco, Ryan contained in a TSP (see page 1). in simple configuration files. The tests
A. Stern, Earl R. Ahten, and Mike Girard of This software is available for commercial li- are completely arbitrary and are not
Caltech for NASA’s Jet Propulsion Laboratory. censing. Please contact Daniel Broderick of tied to any specific programming lan-
Further information is contained in a TSP the California Institute of Technology at guage. A variety of tests is available to
(see page 1). [email protected]. Refer to NPO-48565. support comparing test output files
22 NASA Tech Briefs, January 2013