(WO/2007/008255) DISTANCE-DEPENDENT SPECTRA WITH UNIFORM SAMPLING SPECTROMETRY
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| Latest bibliographic data on file with the International Bureau
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| IPC: | H04L 27/00 (2006.01), G01C 3/08 (2006.01), G01S 13/00 (2006.01), G01S 3/02 (2006.01) | ||||||||||||||||||
| Applicant: | GURUPRASAD, Venkata [US/US]; (US). | ||||||||||||||||||
| Inventor: | GURUPRASAD, Venkata; (US). | ||||||||||||||||||
| Agent: | BROITMAN, Joshua, S.; Ostrager Chong Flaherty & Broitman P.C., 570 Lexington Avenue, Floor 17, New York, New York 10022-6894 (US). | ||||||||||||||||||
| Priority Data: |
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| Title: | DISTANCE-DEPENDENT SPECTRA WITH UNIFORM SAMPLING SPECTROMETRY | ||||||||||||||||||
| Abstract: | In a receiver of electromagnetic or other waves (210-230), scaling of received frequencies in proportion to the respective source distances, so as to reveal the source distances and permit isolation of signals from a particular source by simple spectral filtering. Phas differences between transmitted frequencies due to the common source path lead to chirp eigenfunctions registering in the receiver as scaled frequencies. The chirps are extracted by implementing exponentially varying path delays in autocorrelators and diffractive spectrometers say using a medium (300) with variable refractive index &eegr;(t). Analogous exponentially varying phase shifts are applied to successive samples in the kernel of discrete Fourier transform implementations. Advantage lies in enabling distance-dependent frequency scaling in autocorrelation spectroscopy, as well as in conventional diffractive or refractive spectrometers or digital signal processing with uniform sampling. | ||||||||||||||||||
| Designated States: |
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW. African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW) Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM) European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR) African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). | ||||||||||||||||||
| Publication Language: | English (EN) |
| Filing Language: | English (EN) |
