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1. (WO2018165479) SYSTEMS AND METHODS FOR PERFORMING SYNTHETIC APERTURE RADAR IMAGING USING SUPERCHIRPS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/165479 International Application No.: PCT/US2018/021618
Publication Date: 13.09.2018 International Filing Date: 08.03.2018
IPC:
G01S 7/00 (2006.01) ,G01S 7/28 (2006.01) ,G01S 13/00 (2006.01) ,G01S 13/28 (2006.01) ,G01S 13/90 (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
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
28
Details of pulse systems
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
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
06
Systems determining position data of a target
08
Systems for measuring distance only
10
using transmission of interrupted pulse modulated waves
26
wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
28
with time compression of received pulses
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
88
Radar or analogous systems, specially adapted for specific applications
89
for mapping or imaging
90
using synthetic aperture techniques
Applicants: PLANET LABS INC.[US/US]; 346 9th Street San Francisco, CA 94103, US
Inventors: RUBEL, Michael; US
LEVIT, Creon; US
FERRARO, Matthew; US
Agent: BAILEY, David, J.; US
Priority Data:
15/640,28030.06.2017US
62/470,09110.03.2017US
Title (EN) SYSTEMS AND METHODS FOR PERFORMING SYNTHETIC APERTURE RADAR IMAGING USING SUPERCHIRPS
(FR) SYSTÈMES ET PROCÉDÉS POUR RÉALISER UNE IMAGERIE RADAR À OUVERTURE SYNTHÉTIQUE EN UTILISANT DES IMPULSIONS SUPER-COMPRESSÉES
Abstract:
(EN) Synthetic aperture radar (SAR) imaging systems that transmit repeated waveforms based upon pseudonoise sequences to generate SAR imaging data in accordance with various embodiments of the invention are disclosed. A synthetic aperture radar in accordance with one embodiment of the invention includes: a transmitter configured to transmit superchirps, where the superchirp is generated by convolving a kernel with a pseudonoise modulated impulse sequence having a flat power spectrum; a receiver configured to receive backscatters of transmitted superchirps and digitize the received backscatters; and signal processing circuitry configured to perform matched filtering on digitized backscatters.
(FR) L'invention concerne, selon divers modes de réalisation, des systèmes d'imagerie radar à ouverture synthétique (SAR) qui émettent des formes d'onde répétées basées sur des séquences de pseudo-bruit pour générer des données d'imagerie SAR. Un radar à ouverture synthétique selon un mode de réalisation de l'invention comprend: un émetteur configuré pour émettre des impulsions super-compressées, l'impulsion super-compressée étant générée par convolution d'un noyau avec une séquence d'impulsions modulées par pseudo-bruit présentant un spectre de puissance plat; un récepteur configuré pour recevoir des rétrodiffusions d'impulsions super-compressées émises et numériser les rétrodiffusions reçues; et une circuiterie de traitement de signal configurée pour effectuer un filtrage adapté sur les rétrodiffusions numérisées.
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, SA, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)