Systems and methods for model based inertial navigation for a spinning projectile
Model based inertial navigation for a spinning projectile is provided. In one embodiment, a navigation system comprises: a strapdown navigation processor; a propagator-estimator filter, the processor inputs inertial sensor data and navigation corrections from the filter to generate a navigation solu...
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| creator | Keyes, Sally Ann Enns, Dale F Wilkens, Dean Richard Samborski, Calvin |
| description | Model based inertial navigation for a spinning projectile is provided. In one embodiment, a navigation system comprises: a strapdown navigation processor; a propagator-estimator filter, the processor inputs inertial sensor data and navigation corrections from the filter to generate a navigation solution comprising projectile velocity and attitude estimates; an upfinding navigation aid that generates an angular attitude measurement indicative of a roll angle; and a physics model performing calculations utilizing dynamics equations for a rigid body, the model inputs 1) projectile state estimates from the navigation solution and 2) platform inputs indicative of forces acting on a projectile platform, and outputs a set of three orthogonal predicted translational acceleration measurements based on the inputs; the filter comprises a measurement equation associated with the physics model and the upfinding navigation aid and calculates the navigation corrections as a function of the navigation solution, the predicted translational acceleration measurements, and attitude measurement. |
| format | Patent |
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In one embodiment, a navigation system comprises: a strapdown navigation processor; a propagator-estimator filter, the processor inputs inertial sensor data and navigation corrections from the filter to generate a navigation solution comprising projectile velocity and attitude estimates; an upfinding navigation aid that generates an angular attitude measurement indicative of a roll angle; and a physics model performing calculations utilizing dynamics equations for a rigid body, the model inputs 1) projectile state estimates from the navigation solution and 2) platform inputs indicative of forces acting on a projectile platform, and outputs a set of three orthogonal predicted translational acceleration measurements based on the inputs; the filter comprises a measurement equation associated with the physics model and the upfinding navigation aid and calculates the navigation corrections as a function of the navigation solution, the predicted translational acceleration measurements, and attitude measurement.</description><language>eng</language><subject>AIMING ; AMMUNITION ; BLASTING ; CONTROLLING ; EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; PHYSICS ; REGULATING ; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ; WEAPON SIGHTS ; WEAPONS</subject><creationdate>2023</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=20231010&DB=EPODOC&CC=US&NR=11781836B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20231010&DB=EPODOC&CC=US&NR=11781836B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Keyes, Sally Ann</creatorcontrib><creatorcontrib>Enns, Dale F</creatorcontrib><creatorcontrib>Wilkens, Dean Richard</creatorcontrib><creatorcontrib>Samborski, Calvin</creatorcontrib><title>Systems and methods for model based inertial navigation for a spinning projectile</title><description>Model based inertial navigation for a spinning projectile is provided. In one embodiment, a navigation system comprises: a strapdown navigation processor; a propagator-estimator filter, the processor inputs inertial sensor data and navigation corrections from the filter to generate a navigation solution comprising projectile velocity and attitude estimates; an upfinding navigation aid that generates an angular attitude measurement indicative of a roll angle; and a physics model performing calculations utilizing dynamics equations for a rigid body, the model inputs 1) projectile state estimates from the navigation solution and 2) platform inputs indicative of forces acting on a projectile platform, and outputs a set of three orthogonal predicted translational acceleration measurements based on the inputs; the filter comprises a measurement equation associated with the physics model and the upfinding navigation aid and calculates the navigation corrections as a function of the navigation solution, the predicted translational acceleration measurements, and attitude measurement.</description><subject>AIMING</subject><subject>AMMUNITION</subject><subject>BLASTING</subject><subject>CONTROLLING</subject><subject>EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PHYSICS</subject><subject>REGULATING</subject><subject>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><subject>WEAPON SIGHTS</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAQANAuDqL-w_kBDrGgnRXFVapzOZtre5LchVwQ_HtB_ACnt7x5dW3fVigaoHiIVCb1BoNmiOopwAONPLBQLowBBF88YmGV70GwxCIsI6SsT-oLB1pWswGD0ernolqfT7fjZUNJO7KEPQmV7t46t29cU-8O2_qf8wHq-jgP</recordid><startdate>20231010</startdate><enddate>20231010</enddate><creator>Keyes, Sally Ann</creator><creator>Enns, Dale F</creator><creator>Wilkens, Dean Richard</creator><creator>Samborski, Calvin</creator><scope>EVB</scope></search><sort><creationdate>20231010</creationdate><title>Systems and methods for model based inertial navigation for a spinning projectile</title><author>Keyes, Sally Ann ; Enns, Dale F ; Wilkens, Dean Richard ; Samborski, Calvin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US11781836B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2023</creationdate><topic>AIMING</topic><topic>AMMUNITION</topic><topic>BLASTING</topic><topic>CONTROLLING</topic><topic>EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PHYSICS</topic><topic>REGULATING</topic><topic>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</topic><topic>WEAPON SIGHTS</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Keyes, Sally Ann</creatorcontrib><creatorcontrib>Enns, Dale F</creatorcontrib><creatorcontrib>Wilkens, Dean Richard</creatorcontrib><creatorcontrib>Samborski, Calvin</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Keyes, Sally Ann</au><au>Enns, Dale F</au><au>Wilkens, Dean Richard</au><au>Samborski, Calvin</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Systems and methods for model based inertial navigation for a spinning projectile</title><date>2023-10-10</date><risdate>2023</risdate><abstract>Model based inertial navigation for a spinning projectile is provided. In one embodiment, a navigation system comprises: a strapdown navigation processor; a propagator-estimator filter, the processor inputs inertial sensor data and navigation corrections from the filter to generate a navigation solution comprising projectile velocity and attitude estimates; an upfinding navigation aid that generates an angular attitude measurement indicative of a roll angle; and a physics model performing calculations utilizing dynamics equations for a rigid body, the model inputs 1) projectile state estimates from the navigation solution and 2) platform inputs indicative of forces acting on a projectile platform, and outputs a set of three orthogonal predicted translational acceleration measurements based on the inputs; the filter comprises a measurement equation associated with the physics model and the upfinding navigation aid and calculates the navigation corrections as a function of the navigation solution, the predicted translational acceleration measurements, and attitude measurement.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AIMING AMMUNITION BLASTING CONTROLLING EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION HEATING LIGHTING MECHANICAL ENGINEERING PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES WEAPON SIGHTS WEAPONS |
| title | Systems and methods for model based inertial navigation for a spinning projectile |
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