Scientific and Technical Aerospace Reports Volume 38 July 28, 2000

embedded date, and provides some resilience to removal while concealing the existence of the embedded information from the
observer and the observer’s resources (e.g., computer).
DTIC
Signal Processing; Imagery; Pulse Communication
20000066587 Army Research Lab., Sensors Directorate, Adelphi, MD USA
Characterization of the Effects of Cavities and Canopies on Radar Target Signatures, May-Nov 1999
Goldman, Geoffrey H.; Feb. 2000; 22p; In English
Contract(s)/Grant(s): Proj-AH16
Report No.(s): AD-A377283; ARL-TN-154; No Copyright; Avail: CASI; A03, Hardcopy; A01, Microfiche
I conducted a literature search on electromagnetic models for cavities and canopies and their effect on radar target signatures.
This report is a simple analysis of cavities as well as a review of electromagnetic codes that simulate the radar backscatter of targets
with cavities. I also review imaging and parametric techniques to describe targets with cavities and canopies. Finally, recommendations
are offered for enhancing signature generation for hardware-in-the-loop (HWIL) and software-in-the-loop (SIL).
DTIC
Cavities; Radar Signatures; Imaging Techniques; Hardware-In-The-Loop Simulation
20000066589 Department of the Navy, Washington, DC USA
Spinning Focal Plane Array Camera Particularly Suited for Real Time Pattern Recognition
Garcia, Joseph P., Inventor; Nov. 23, 1999; 15p; In English; Supersedes US-Patent-Appl-SN-09131844, AD-D019025.
Patent Info.: Filed 3 Jul. 1998; US-Patent-Appl-SN-09,131,844; US-Patent-5,990,829
Report No.(s): AD-D019710; No Copyright; Avail: US Patent and Trademark Office, Microfiche
A computer vision system is disclosed that utilizes a spinning array of photodetectors. The array is rotated about the focal
plane of a lens and scans all the possible orientations and positions of the edges of the unknown object. In one embodiment, the
photodetectors are elongated so as to provide for maximum light gathering ability along the direction of elongation and a minimum
light gathering ability in the direction perpendicular to the direction of elongation. In other embodiments, optical means are used
to focus the image onto conventional photodetectors while still having the ability to more efficiently determine edge segments
of unknown objects. The system efficiently and rapidly implements the wavelet projection transform to characterize-multi-scale
edge segment features of an image of an unknown object. An imaging radar system that utilizes a spinning antenna system having
frequency scanning provisions is also disclosed.
DTIC
Real Time Operation; Focal Plane Devices; Computer Vision; Pattern Recognition; Imaging Radar; Cameras; Photometers
20000066594 Physics and Electronics Lab. TNO, The Hague, Netherlands
User Manual of the Prototype Soldier Digital Assistant (Leusderheide Release) Final Report Gebruikershandleiding van
het Prototype Soldier Digital Assistant (Leusderheide Release)
Rietveld, R., Physics and Electronics Lab. TNO, Netherlands; deGroot, H., Physics and Electronics Lab. TNO, Netherlands;
deJongh, J. F. C. M., Physics and Electronics Lab. TNO, Netherlands; August 1999; 21p; In Dutch; Original contains color illustrations
Contract(s)/Grant(s): A98/KL/701; TNO Proj. 27789
Report No.(s): TD99-0216; FEL-99-A074; Copyright; Avail: Issuing Activity
A prototype Soldier Digital Assistant has been developed for the Royal Netherlands Army. The Soldier digital Assistant aims
at improving the situational awareness of a combat soldier. Also, soldiers can communicate with fellow soldiers in the same group.
In this document a User Manual of the second prototype is given. This prototype is referred to as the ’Leusderheide’ release. The
manual focusses on the software used. However, a brief description of the hardware is included as well. The purpose of the document
is to use it in training sessions in future field trials.
Author
User Manuals (Computer Programs); Prototypes; Education; Communicating
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