| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_887e125008cf84c53554d9e68cf7f02b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04K3-255
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S19-29
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04K3-90 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S5-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-29
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S19-43 |
| filingDate |
2006-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2014-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79878aee9d672f41415cfa4da71a3e56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_388429c0bae209870dcac8c1509f828c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee67d4712745c581ff9f1a43321bb645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82f454388049b2973d7989a4e839febc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5343f6e26584c725f190b8c15fb198b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_efd2dac4ffe469660520d2c1ffd54ab2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73b3938009e958da6bd7f3df53ab44ea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e21b6914ca51affea705b6a78f2064c6 |
| publicationDate |
2014-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2628795-C |
| titleOfInvention |
Methods and apparatus for a navigation system with reduced susceptibility to interference and jamming |
| abstract |
A navigation system provides a significant level of protection against all forms of interference or jamming to GPS in a cost-effective way. The system employs a network of ground reference stations and Low Earth Orbiting (LEO) satellites in conjunction with GPS. A common-view ranging geometry to a GPS satellite is established that links a reference station and a user. A second common-view geometry to a LEO satellite between the same reference station and user pair is also established. The ground stations synthesize real-time aiding signals by making carrier phase measurements of GPS the LEO satellite signals. This aiding information is transmitted via the LEO satellites to the user receiver at high power to penetrate ambient jamming. The user receiver locks onto the carrier phase of the LEO satellite, demodulates the aiding information, then applies the carrier phase measurements and the aiding information to enable extended coherent measurements of the GPS signals. The system thereby recovers the GPS signals that would otherwise be lost to the jamming. |
| priorityDate |
2005-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |