| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e29644c9ce9aa4e496dee204494cd431 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-708 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-34 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-708 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S1-00 |
| filingDate |
1998-03-16^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-04-02^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b87bfdf54e58b9775ae28d4eed8d0ab1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52baa28f565357b20978ed2dafc9b8e5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98323857c3ea328bc8a964723e3f2564
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb72546526728cbd85a5fd3b65055ff9 |
| publicationDate |
2002-04-02^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6366599-B1 |
| titleOfInvention |
Fast acquisition of spread-spectrum signals by dynamically varying spacing of search bins |
| abstract |
A Global Positioning System (GPS) receiver employs variable spacing of Doppler offset bins and code offset bins when acquiring a P(Y) code, to improve signal acquisition characteristics with respect to a search region having a plurality of Doppler offset bins and code offset bins. The receiver includes an acquisition module in which an input signal representative of a received P(Y) code is received and applied to a first programmable rate mixer. An output of the first programmable rate mixer is applied to a combiner, which selectively combines samples of the input signal based on a control input to dynamically determine the spacing of the code offset bins. An output of the combiner is normalized and applied to a correlation unit, which generates correlation measures of the received P(Y) code and a locally generated P(Y) code. A signal representative of the correlation measures is applied separately to each of a set of programmable rate mixers and mixed with separate mixing signals. The spacing of the Doppler offset bins is dynamically determined by controlling the rates of the mixing signals. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8503513-B2
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8019540-B2 |
| priorityDate |
1998-03-16^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |