{"id":255,"date":"2026-07-22T16:00:37","date_gmt":"2026-07-22T08:00:37","guid":{"rendered":"https:\/\/www.ronglitong.com\/?p=255"},"modified":"2026-07-23T13:34:44","modified_gmt":"2026-07-23T05:34:44","slug":"pu50a-strapdown-inertial-navigation-system-sins","status":"publish","type":"post","link":"https:\/\/www.ronglitong.com\/zh-cht\/product\/pu50a-strapdown-inertial-navigation-system-sins\/","title":{"rendered":"PU50A Strapdown Inertial Navigation System (SINS)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_052656_341.jpg\" alt=\"\" class=\"wp-image-344\" srcset=\"https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_052656_341.jpg 700w, https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_052656_341-300x300.jpg 300w, https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_052656_341-150x150.jpg 150w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color has-medium-font-size wp-elements-1054f1a45444fce4e6f2df7405148eb7\"><strong>Overview<\/strong><\/p>\n\n\n\n<p>The PU50A is a fiber optic strapdown inertial navigation system (INS) widely used for three\u2011axis attitude vector measurement, three\u2011axis vibration vector measurement, north\u2011finding, and integrated navigation and positioning in aircraft, vehicles, ships, bridges, and other applications. It uses fiber optic gyroscopes as the primary inertial sensing elements, featuring mature technology and stable performance.<\/p>\n\n\n\n<p>The PU50A can be strapdown\u2011integrated with various additional measurement units, such as PPP\u2011RTK, GNSS (BeiDou + GPS + Galileo + GLONASS), air data systems, radar altimeters, and vehicle odometers. Its strapdown integration with PPP\u2011RTK enables the following three navigation and positioning modes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Integrated strapdown navigation with satellite signals available;<\/li>\n\n\n\n<li>Integrated strapdown navigation with satellite signals unavailable but radio signals available;<\/li>\n\n\n\n<li>Pure inertial strapdown navigation when neither satellite nor radio signals are available.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color has-medium-font-size wp-elements-5eff430e999fe0d76fc6b23173133fe6\"><strong>Technical Specifications<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-border-color has-cyan-bluish-gray-border-color\" style=\"border-width:1px\"><tbody><tr><td colspan=\"4\"><strong>Parameter<\/strong><\/td><td><strong>Specification<\/strong><\/td><td><strong>Remark<\/strong><\/td><\/tr><tr><td rowspan=\"2\">Alignment Time<\/td><td colspan=\"3\">Normal alignment<\/td><td>5 min<\/td><td>&nbsp;<\/td><\/tr><tr><td colspan=\"3\">Quick alignment<\/td><td>2 min<\/td><td>&nbsp;<\/td><\/tr><tr><td rowspan=\"4\">Position Precision<\/td><td colspan=\"3\" rowspan=\"2\">GNSS\/INS Integrated (RTK)<\/td><td>Integrated: 0.5m (RTK); Distance: 50km<\/td><td>(95% CEP, PDOP \u2264 4)<\/td><\/tr><tr><td>integrated (BDS\/GPS), no RTK: 20m<\/td><td>95% CEP, PDOP \u2264 4\uff09<\/td><\/tr><tr><td colspan=\"2\" rowspan=\"2\">Pure inertial<\/td><td>normal alignment<\/td><td>500m<\/td><td>T \u2264 15min, CEP<\/td><\/tr><tr><td>quick alignment<\/td><td>1000m<\/td><td>T \u2264 1min, CEP<\/td><\/tr><tr><td rowspan=\"2\">Attitude Precision<\/td><td colspan=\"3\">normal alignment<\/td><td>0.1\u00b0<\/td><td>RMS<\/td><\/tr><tr><td colspan=\"3\">quick alignment<\/td><td>0.15\u00b0<\/td><td>RMS<\/td><\/tr><tr><td rowspan=\"5\">Heading Precision<\/td><td colspan=\"3\" rowspan=\"2\">Normal compass alignment<\/td><td>0.1\u00b0<\/td><td>RMS<\/td><\/tr><tr><td>0.07\u00b0+0.02 x (T-2h)\uff0cT > 2h<\/td><td>RMS<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"2\">quick alignment<\/td><td>0.1\u00b0\uff0cT \u2264 2h<\/td><td>RMS<\/td><\/tr><tr><td>0.2\u00b0\uff0c2h < T \u2264 4h<\/td><td>RMS<\/td><\/tr><tr><td colspan=\"5\">Note: Initial heading reference must be externally provided. In\u2011flight straight\u2011line alignment is available.<\/td><\/tr><tr><td rowspan=\"3\">Velocity Precision<\/td><td colspan=\"3\">GNSS\/INS integrated<\/td><td>0.5 m\/s<\/td><td>(2\u03c3)<\/td><\/tr><tr><td colspan=\"2\" rowspan=\"2\">Pure inertial navigation<\/td><td>normal compass alignment<\/td><td>0.8m\/s\uff080.5h error increment\uff09<\/td><td>T \u2264 15min, RMS<\/td><\/tr><tr><td>quick alignment<\/td><td>1m\/s\uff081h error increment\uff09<\/td><td>T \u2264 15min, RMS<\/td><\/tr><tr><td colspan=\"4\">Angular Rate Drift<\/td><td>0.05\u00b0\/h<\/td><td rowspan=\"2\">(static, 100s smoothing) T \u2264 1h, RMS<\/td><\/tr><tr><td colspan=\"4\">Three\u2011Axis Acceleration Drift<\/td><td>60\u03bcg<\/td><\/tr><tr><td colspan=\"2\" rowspan=\"2\">Dimensions<\/td><td colspan=\"2\">Navigation unit with mounting bracket<\/td><td>150 \u00d7 100 \u00d7 100 mm (L x W x H)<\/td><td>&nbsp;<\/td><\/tr><tr><td colspan=\"2\">GNSS antenna<\/td><td>See Attachment<\/td><td>&nbsp;<\/td><\/tr><tr><td colspan=\"2\" rowspan=\"3\">Weight<\/td><td colspan=\"2\">Navigation unit<\/td><td>\u22641.5Kg<\/td><td rowspan=\"3\">Total: < 2 Kg<\/td><\/tr><tr><td colspan=\"2\">Mounting bracket (optional)<\/td><td>\u22640.5Kg<\/td><\/tr><tr><td colspan=\"2\">GNSS antenna<\/td><td>\u22640.25Kg<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color has-medium-font-size wp-elements-96a16b304ba1629185773e637bef81dc\"><strong>Dimensions&nbsp;<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"530\" height=\"1024\" src=\"https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_053434_831-530x1024.webp\" alt=\"\" class=\"wp-image-354\" srcset=\"https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_053434_831-530x1024.webp 530w, https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_053434_831-155x300.webp 155w, https:\/\/www.ronglitong.com\/wp-content\/uploads\/2026\/07\/20260723_053434_831.webp 616w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The PU50A is a fiber optic strapdown inertial navigation system (INS) widely used for three\u2011axis attitude vector measurement, three\u2011axis [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":344,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5,4],"tags":[],"class_list":["post-255","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiber-optic-gyroscope","category-product"],"_links":{"self":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/comments?post=255"}],"version-history":[{"count":5,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/255\/revisions"}],"predecessor-version":[{"id":355,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/255\/revisions\/355"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/media\/344"}],"wp:attachment":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}