SYSTEM FOR DETERMINING HIGH-INTEGRITY NAVIGATION SOLUTIONS VIA OPTIMAL PARTIAL FIXING OF FLOATING-POINT INTEGER AMBIGUITIES
A system and for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms. The set of decorrelated floating-point ambiguities is used to compute protecti...
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| creator | McGraw, Gary A Phan, Huan T Armatys, Michael J |
| description | A system and for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms. The set of decorrelated floating-point ambiguities is used to compute protection levels and the probability of almost fix (PAF), or the probability that the partial almost-fix solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. While the PAF remains below threshold and the protection levels remain below alert levels, the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) is generated by fixing the decorrelated ambiguities are one at a time in the LAMBDA domain and replacing the appropriate carrier-phase ambiguities with the corresponding fixed ambiguities, reverting to the last solution if PAF reaches the threshold or if protection levels reach the alert levels. |
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The set of decorrelated floating-point ambiguities is used to compute protection levels and the probability of almost fix (PAF), or the probability that the partial almost-fix solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. While the PAF remains below threshold and the protection levels remain below alert levels, the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) is generated by fixing the decorrelated ambiguities are one at a time in the LAMBDA domain and replacing the appropriate carrier-phase ambiguities with the corresponding fixed ambiguities, reverting to the last solution if PAF reaches the threshold or if protection levels reach the alert levels.</description><language>eng</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220421&DB=EPODOC&CC=US&NR=2022120916A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25566,76549</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220421&DB=EPODOC&CC=US&NR=2022120916A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>McGraw, Gary A</creatorcontrib><creatorcontrib>Phan, Huan T</creatorcontrib><creatorcontrib>Armatys, Michael J</creatorcontrib><title>SYSTEM FOR DETERMINING HIGH-INTEGRITY NAVIGATION SOLUTIONS VIA OPTIMAL PARTIAL FIXING OF FLOATING-POINT INTEGER AMBIGUITIES</title><description>A system and for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms. The set of decorrelated floating-point ambiguities is used to compute protection levels and the probability of almost fix (PAF), or the probability that the partial almost-fix solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. While the PAF remains below threshold and the protection levels remain below alert levels, the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) is generated by fixing the decorrelated ambiguities are one at a time in the LAMBDA domain and replacing the appropriate carrier-phase ambiguities with the corresponding fixed ambiguities, reverting to the last solution if PAF reaches the threshold or if protection levels reach the alert levels.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjLEKwjAURbs4iPoPD5wLbQTBMWqSPmjySvJa7FSKxEm0UDd_3lb8AKdzh3vOMnmHNrCyoMnDWbHyFh06AwWaIkXHynjkFpxs0EhGchCorOcRoEEJVDFaWUIlPeNEjZdZJw26pElwJq1o6sC3pTxIe0RTI6MK62Rx6-9j3Py4SrZa8alI4_Ds4jj01_iIr64OIhMiF9kh38t899_rA6EoPF8</recordid><startdate>20220421</startdate><enddate>20220421</enddate><creator>McGraw, Gary A</creator><creator>Phan, Huan T</creator><creator>Armatys, Michael J</creator><scope>EVB</scope></search><sort><creationdate>20220421</creationdate><title>SYSTEM FOR DETERMINING HIGH-INTEGRITY NAVIGATION SOLUTIONS VIA OPTIMAL PARTIAL FIXING OF FLOATING-POINT INTEGER AMBIGUITIES</title><author>McGraw, Gary A ; Phan, Huan T ; Armatys, Michael J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2022120916A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2022</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>McGraw, Gary A</creatorcontrib><creatorcontrib>Phan, Huan T</creatorcontrib><creatorcontrib>Armatys, Michael J</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>McGraw, Gary A</au><au>Phan, Huan T</au><au>Armatys, Michael J</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SYSTEM FOR DETERMINING HIGH-INTEGRITY NAVIGATION SOLUTIONS VIA OPTIMAL PARTIAL FIXING OF FLOATING-POINT INTEGER AMBIGUITIES</title><date>2022-04-21</date><risdate>2022</risdate><abstract>A system and for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms. 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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING |
| title | SYSTEM FOR DETERMINING HIGH-INTEGRITY NAVIGATION SOLUTIONS VIA OPTIMAL PARTIAL FIXING OF FLOATING-POINT INTEGER AMBIGUITIES |
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