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1. (WO2013119296) ENHANCED TARGET DETECTION USING DISPERSIVE VS NON-DISPERSIVE SCATTERER SIGNAL PROCESSING
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Pub. No.:
WO/2013/119296
International Application No.:
PCT/US2012/065946
Publication Date:
15.08.2013
International Filing Date:
19.11.2012
IPC:
G01S 7/41
(2006.01),
G01S 13/524
(2006.01)
G
PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
02
of systems according to group G01S13/58
41
using analysis of echo signal for target characterisation; Target signature; Target cross-section
G
PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
50
Systems of measurement based on relative movement of target
52
Discriminating between fixed and moving objects or between objects moving at different speeds
522
using transmissions of interrupted pulse modulated waves
524
based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
Applicants:
RAYTHEON COMPANY
[US/US]; 870 Winter Street Waltham, MA 02451-1449 (US)
Inventors:
ABATZOGLOU, Theagenis, J.
; (US).
HO, Kenneth
; (US).
HUI, Leo, H.
; (US)
Agent:
GREEN, Robert, A.
; Christie, Parker & Hale, LLP P.o. Box 29001 Glendale, CA 91209 (US)
Priority Data:
13/374,998
26.01.2012
US
Title
(EN)
ENHANCED TARGET DETECTION USING DISPERSIVE VS NON-DISPERSIVE SCATTERER SIGNAL PROCESSING
(FR)
DÉTECTION DE CIBLE AMÉLIORÉE AU MOYEN D'UN TRAITEMENT DE SIGNAUX DE DIFFUSEURS DISPERSIFS/NON DISPERSIFS
Abstract:
(EN)
A method of target discrimination and identification, on a computer including a processing unit and a non-volatile storage device, from a radar signal having a plurality of radar return signals, is presented. The method includes: modeling, on the computer, the radar return signals by linear prediction to produce linear prediction equations; solving, on the computer, the linear prediction equations by the Burg algorithm to produce linear prediction coefficients for a linear prediction coefficient polynomial; computing, on the computer, roots of the linear prediction coefficient polynomial to produce scattering modes; computing, on the computer, a distance of each of the scattering modes to a unit circle; computing, on the computer, a complex envelope for each mode of the scattering modes; and selecting, on the computer, target scattering modes from among the scattering modes based on the distance of the mode to the unit circle and the complex envelope of the mode.
(FR)
L'invention concerne un procédé permettant de distinguer et d'identifier, une cible, sur un ordinateur comprenant une unité de traitement et un dispositif de mémoire non volatile, à partir d'un signal radar comprenant une pluralité de signaux de retour radar. Ledit procédé consiste à : modéliser, sur l'ordinateur, les signaux de retour radar par prédiction linéaire pour produire des équations de prédiction linéaire; résoudre, sur l'ordinateur, les équations de prédiction linéaire à l'aide de l'algorithme de Burg pour produire des coefficients de prédiction linéaire pour un polynôme de coefficient de prédiction linéaire; calculer, sur l'ordinateur, les racines du polynôme de coefficient de prédiction linéaire pour produire des modes de dispersion; calculer, sur l'ordinateur, une distance entre chacun des modes de dispersion et un cercle unitaire; calculer, sur l'ordinateur, une enveloppe complexe pour chacun des modes de dispersion; et sélectionner, sur l'ordinateur, des modes de diffusion cibles parmi les modes de diffusion d'après la distance entre le mode et le cercle unitaire et l'enveloppe complexe du mode.
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)