WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |

Search International and National Patent Collections
World Intellectual Property Organization
Machine translation
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/038899    International Application No.:    PCT/GB2000/004430
Publication Date: 31.05.2001 International Filing Date: 22.11.2000
Chapter 2 Demand Filed:    22.06.2001    
G01S 7/52 (2006.01), G01S 7/527 (2006.01), G01S 7/53 (2006.01), G01S 15/10 (2006.01), G01S 15/96 (2006.01)
Applicants: SYSTEMS ENGINEERING AND ASSESSMENT [GB/GB]; Beckington Castle, Beckington, Bath BA3 6TB (GB) (For All Designated States Except US).
COOPER, Peter [GB/GB]; (GB) (For US Only).
BARNES, Ronald [GB/GB]; (GB) (For US Only)
Inventors: COOPER, Peter; (GB).
BARNES, Ronald; (GB)
Agent: BRYER, Kenneth, Robert; K R Bryer & Co., 7 Gay Street, Bath BA1 2PH (GB)
Priority Data:
9927462.3 22.11.1999 GB
Abstract: front page image
(EN)A signal processing apparatus is provided for analysing an echo signal reflected from a region such as the seabed that has been exposed to a transmitted pulse signal. The apparatus comprises inputs (13, 14) for receiving at least the transmitted pulse signal and the received reflected signal. Signal analysing means (23) is provided for analysing at least some of the characteristics of the transmitted pulse signal and to vary the operation of the apparatus in dependence thereon. Another apparatus comprises means for detecting the pulse length of the transmitted signal as an indication of the likely bandwidth of the reflected signal, and means for filtering the reflected signal with a band pass filter the pass band of which is varied in dependence on the anticipated bandwidth of the reflected signal. This improves the signal-to-noise ratio of the received reflected signal for further processing.
(FR)La présente invention concerne un appareil de traitement de signal destiné à analyser un signal d'écho réfléchi par une région, telle que le fond marin, exposée à un signal impulsion émis. L'appareil comprend des entrées (13, 14) destinées à recevoir au moins le signal impulsion émis et le signal réfléchi reçu. Des moyens d'analyse du signal (23) permettent d'analyser au moins certaines des caractéristiques du signal impulsion émis et de faire, à ce sujet, varier le fonctionnement de l'appareil. Un autre appareil comprend des moyens de détection de la longueur d'impulsion du signal émis en tant qu'indication de la largeur de bande probable du signal réfléchi, ainsi que des moyens permettant de filtrer le signal réfléchi au moyen d'un filtre passe-bande dont on fait varier la bande passante en fonction de la largeur de bande attendue du signal réfléchi. Ceci permet d'améliorer le rapport signal sur bruit du signal réfléchi aux fins de traitement ultérieur.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)