Wide-Dynamic-Range Analog-to-Digital Conversion for HFDF.

reportActive / Technical Report | Accession Number: ADA188465 | Open PDF

Abstract:

Progress is reported in the development of the linear predictive codinghigh-speed photoconductor sampling switch concept for wide-dynamic-range digitization of wideband HFDF data, using a synchronously driven laserfiber-optic system. Development activity reported is in the areas of 1 simulation, modeling, analysis, and demonstration of noisejammer approach, using linear predictive coding for speech data 2 assessment of a finite-impulse-response digital filter approach, using a tapped delay line with fixed tap weights and an over-sampled signal to accomplish linear prediction with arbitrary accuracy 3 analysis of the physical properties of photoconductor switches and sampletrack-and-hold circuit parameters as they limit the data word accuracy in an AD converter application and 4 current and future development activities. Keywords include High-frequency direction finder HFDF, Lasers, Fiber optics, Switches, Linear predictive coding, High-speed photoconductors, Wide-dynamic-range digitization, Noisejammer cancellation, and Modems.

Author(s):
Mcknight, W. H. ; Kaplan, D. J. ; Speiser, J. M. ; Jones, T. O.
Author Organization(s):
NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Descriptive Note:
Technical rept. May-Nov 86,
Pagination:
0036

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NOS/TD-1034
Project Number(s):
F12151
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.6_Concepts; JCA_5.2.2_Develop Knowledge and Situational Awareness; JCA_5.2_Understand
Modernization Areas:
Microelectronics
Communities of Interest:
Materials and Manufacturing Processes
Descriptor(s):
*CONVERTERS, *DIRECTION FINDING, *FIBER OPTICS, *MODEMS, ACCURACY, CANCELLATION, CODING, DATA MANAGEMENT, DELAY LINES, HIGH FREQUENCY, LASERS, LINEAR SYSTEMS, NOISE, NOISE JAMMERS, PHOTOCONDUCTORS, PHYSICAL PROPERTIES, PREDICTIONS, SIMULATION, SPEECH, SWITCHES, TAPS, WORDS(LANGUAGE)
Field(s)/Group(s):
Target Direction, Range and Position Finding, Fiber Optics and Integrated Optics
Keyword(s):
PE62712N, WUEE99
Report Date:
1986 Nov 01