Radio
Frequency Protection
Techniques Division
 This
division of L-3's Advanced Technologies Division (formerly
Jaycor), is based in Santa Barbara, CA, and is involved in
a wide range of electromagnetic (EM) protection activities
ranging from major multi-year programs for the Defense Special
Weapons Agency (DSWA) to small EMI consulting activities.
One major DSWA program involves developing and validating
coupling models and protection techniques for systems exposed
to high power microwave (HPM) sources. Coupling models for
narrowband backdoor coupling are incorporated into a Windows®-based
computer code called JEM RF. The code flows a user specified
EM environment through a system to generate bounds on coupled
pin stresses. The stresses are compared with levels required
for damage, upset, and interference across the specified frequency
band.
Another DSWA program is concerned with developing and quickly
transferring to end users, innovative protection techniques
for all electromagnetic effects, hostile and non-hostile,
natural and manmade. Emphasis is on hostile EM effects such
as EMP, HPM, and other emerging EM weapons. Jaycor, now L-3
Communications, and its and subcontractors on this program,
Boeing, Stanford Telecom, Teledyne Brown Engineering, and
Lindgren provide a broad source of advanced technology and
the experience needed to apply it to real-world problems.
A major activity under this program is supporting PM TOC
(Program Manager Tactical Operation Centers) in Huntsville.
The Titan Team is developing a database of equipment immunity
for military and commercial equipment used to assemble TOCs.
Immunity will be determined using new test data, taken specifically
for this program, standards the equipment is known to have
met, or an assessment based on similarity of design to equipment
with know immunity levels.
A computer code, JEM TOC, will be used to access the database
and estimate the ability of the TOC to meet its mission requirements
over the full range of EM environments specified for the system.
The equipment immunity database can be used by other programs
for a variety of applications.
Other computer products developed by the division include
JEM 3D, a powerful three-dimensional finite difference code
for solving Maxwell's equations. It is used to solve a wide
range of EMP and HPM problems.
The division is also developing the Testable Hardware Workbook,
a computer code for satellite survivability engineers. It
incorporates an electronic version of the SGEMP test protocol
developed by a Jaycor team for DSWA, and integrates it with
a tool for "building" a spacecraft and calculating
SGEMP effects down to the pin level. It uses models documented
in the protocol and automates many of the modeling tasks.
For more information contact Bill Crevier
at 805.682.8782
or by e-mail william.crevier@L-3com.com
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