The problem of the terminal impact angle control guidance law, considering the target observability for passive guidance with bearing-only measurement, is investigated in this paper. Modified line-of-sight (LOS) angle error dynamics and their closed-loop analytical solution are developed to enhance the target observability, and then their characteristics are studied, which makes the LOS angular rate oscillate in the early stage. The terminal impact angle control guidance law with the global sliding mode is designed to eliminate the approaching stage of sliding mode control, which makes the system robust throughout the entire process of control. Finally, numerical simulations are presented to demonstrate the performance of the proposed guidance law under various conditions, which achieves the desired results."> MathJax.Hub.Config({ "HTML-CSS": { availableFonts: ["TeX"], preferredFonts: "TeX", webFont:"TeX", imageFont:"TeX", undefinedFamily:'Arial Unicode MS',serif", scale: 80, linebreaks: { automatic: true, width: "container" } }, "TeX": { extensions: ["noErrors.js"], noErrors: { inlineDelimiters: ["",""], multiLine: true, style: { "font-size": "90%", "text-align": "left", "color": "black", "padding": "1px 3px", "border": "1px solid" } } } }); MathJax.Hub.Register.StartupHook("End",function () { $(".art-abstract").css("display", "block"); }); (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-5824718-2', 'auto'); ga('require', 'displayfeatures'); ga('send', 'pageview'); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-WPK7SW5'); _linkedin_partner_id = "2846186"; window._linkedin_data_partner_ids = window._linkedin_data_partner_ids || []; window._linkedin_data_partner_ids.push(_linkedin_partner_id); (function(){var s = document.getElementsByTagName("script")[0]; var b = document.createElement("script"); b.type = "text/javascript";b.async = true; b.src = "https://snap.licdn.com/li.lms-analytics/insight.min.js"; s.parentNode.insertBefore(b, s);})(); Previous Article in Journal
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Open AccessArticleTerminal Impact Angle Control Guidance Law Considering Target Observability byBin Li 1, Pan Tang 2, Haotian Xu 1 and Duo Zheng 3,* 1Department of Automation, Tsinghua University, Beijing 100084, China2Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China3School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China*Author to whom correspondence should be addressed. Academic Editor: Gokhan InalhanAerospace 2022, 9(4), 193; https://doi.org/10.3390/aerospace9040193Received: 3 March 2022/Revised: 1 April 2022/Accepted: 1 April 2022/Published: 3 April 2022(This article belongs to the Special Issue Aerospace System Design)
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Cite This PaperAbstractThe problem of the terminal impact angle control guidance law, considering the target observability for passive guidance with bearing-only measurement, is investigated in this paper. Modified line-of-sight (LOS) angle error dynamics and their closed-loop analytical solution are developed to enhance the target observability, and then their characteristics are studied, which makes the LOS angular rate oscillate in the early stage. The terminal impact angle control guidance law with the global sliding mode is designed to eliminate the approaching stage of sliding mode control, which makes the system robust throughout the entire process of control. Finally, numerical simulations are presented to demonstrate the performance of the proposed guidance law under various conditions, which achieves the desired results.Keywords: terminal impact angle control; target observability; line-of-sight angle error dynamics; global sliding mode terminal impact angle control; target observability; line-of-sight angle error dynamics; global sliding modeThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citedShare and Cite MDPI and ACS Style

Li, B.; Tang, P.; Xu, H.; Zheng, D. Terminal Impact Angle Control Guidance Law Considering Target Observability. Aerospace 2022, 9, 193.https://doi.org/10.3390/aerospace9040193

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Li B, Tang P, Xu H, Zheng D. Terminal Impact Angle Control Guidance Law Considering Target Observability. Aerospace. 2022; 9(4):193.https://doi.org/10.3390/aerospace9040193

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Li, Bin, Pan Tang, Haotian Xu, and Duo Zheng. 2022. "Terminal Impact Angle Control Guidance Law Considering Target Observability" Aerospace 9, no. 4: 193.https://doi.org/10.3390/aerospace9040193

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Not used anymore (this code can be moved to somewhere for storage in case we need similar logic with other iterations) // function checkDisplaySurvey() { var surveyDisabled = localStorage.getItem("mdpi_disable_survey"); var viewCount = localStorage.getItem("mdpi_new_layout_views"); var viewLimit = localStorage.getItem("mdpi_new_layout_limit"); if (null !== surveyDisabled) { return; } return; // todo: the below part can be removed later on... if (null === viewLimit) { localStorage.setItem("mdpi_new_layout_limit", Math.floor(Math.random() * 50)); localStorage.setItem("mdpi_new_layout_views", 0); } else { viewCount++; localStorage.setItem("mdpi_new_layout_views", viewCount); if (viewCount >= viewLimit) { $.ajax({ url: "/ajax_cookie_value/mdpi_disable_survey", success: function(data) { if (data.value) { localStorage.setItem("mdpi_disable_survey", true); } else { $(".js-survey").show(); } } }); } } } var banners_url = 'https://serve.mdpi.com'; $(document).ready(function() { var helpFunctions = $(".middle-column__help__fixed"); var middleColumn = $("#middle-column"); helpFunctions.affix({ offset: { top: function() { return middleColumn.offset().top - 8 - (Foundation.utils.is_medium_only() ? 30 : 0); }, bottom: function() { return $("#footer").innerHeight() + 56 + (Foundation.utils.is_medium_only() ? 0 : 0); } } }); new ClipboardJS('.js-clipboard-copy'); }); $(document).ready(function() { $(".link-article-menu").click(function(e) { e.preventDefault(); $(this).find('span').toggle(); $(this).next("div").toggleClass("active"); }); }); $(document).ready(function() { $(document).on('keyup', function (e) { if (e.keyCode == 27) { var hElem = $(this).find(".annotator-adder"); if (hElem.length){ hElem.css({'visibility':'hidden'}); } else { document.querySelector("hypothesis-adder").shadowRoot.querySelector(".annotator-adder").style.visibility = "hidden"; } } }); }); window.hypothesisConfig = function () { return { sidebarAppUrl: 'https://commenting.mdpi.com/app.html', showHighlights: 'whenSidebarOpen' , openSidebar: false , assetRoot: 'https://commentingres.mdpi.com/hypothesis', services: [{ apiUrl: 'https://commenting.mdpi.com/api/', authority: 'mdpi', grantToken: ', doi: '10.3390/aerospace9040193' }], }; }; MathJax . Hub . Startup . signal . Interest ( function ( message ) { if ( message == 'End' ){ var hypoLink = document . getElementById ( "hypothesis_frame" ) hypoLink . setAttribute ( "src" , "https://commenting.mdpi.com/embed.js" ) }}); $(document).ready(function() { var scifeedCounter = 0; var search = window.location.search; if (0 === search.indexOf('?type=check_update&version=')) { $.ajax({ url: "/2226-4310/9/4/193" + "/versioncheck" + search, success: function(result) { $(".js-check-update-container").html(result); } }); } $('#feed_option').click(function() { // tracker if ($('#scifeed_clicked').length0) { event.preventDefault(); // alert('Here there would be a captcha because user is not logged in'); var captchaSection = $("#captchaSection"); if (captchaSection.hasClass('ui-helper-hidden')) { captchaSection.removeClass('ui-helper-hidden').find('input').prop('disabled', false); var img = captchaSection.find('img'); img.attr('src', img.data('url') + "?" + (new Date()).getTime()); $("#reloadCaptcha").trigger("click"); } } }); $(document).on('click', '.scifeed_msg', function(){ $(this).hide(); }); $(document).on('click', '.article-scilit-search', function(e) { e.preventDefault(); var data = $(".article-scilit-search-data").val(); var dataArray = data.split(';').map(function(keyword) { return "("" + keyword.trim() + "")"; }); var searchQuery = dataArray.join(" OR "); var searchUrl = encodeURI("https://www.scilit.net/articles/search?q="+ searchQuery + "&advanced=1&highlight=1"); var win = window.open(searchUrl, '_blank'); if (win) { win.focus(); } else { window.location(searchUrl); } }); display_stats(); citedCount(); follow_goto(); // Check if one of the related widget is loaded... $(document).on('DOMNodeInserted', function(e) { // THE IF STATEMENT TO INSERT RELATED "TAB" if ($(e.target).hasClass('trendmd-widget-container') || $(e.target).hasClass('related_body') ) { // Insert the tab... $('

» Author: Bin Li

» Reference: Aerospace 2022, Vol. 9, Page 193

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