{"id":1754,"date":"2022-05-17T14:44:06","date_gmt":"2022-05-17T06:44:06","guid":{"rendered":"http:\/\/www.decitone.com\/blog\/?p=1754"},"modified":"2022-05-17T14:44:16","modified_gmt":"2022-05-17T06:44:16","slug":"dmr-%e4%b8%8e-tetra%e4%b8%a4%e7%a7%8d%e6%8a%80%e6%9c%af%e5%af%b9%e6%af%94","status":"publish","type":"post","link":"https:\/\/www.decitone.com\/blog\/archives\/1754","title":{"rendered":"DMR \u4e0e TETRA\u4e24\u79cd\u6280\u672f\u5bf9\u6bd4"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>\u7531\u4e8e\u8fc7\u65f6\u3001\u76d1\u7ba1\u8981\u6c42\u6216\u65e0\u6cd5\u63d0\u4f9b\u6570\u5b57\u65e0\u7ebf\u7535\u7684\u5546\u4e1a\u5229\u76ca\uff0c\u8bb8\u591a\u901a\u4fe1\u7cfb\u7edf\u90fd\u8fbe\u5230\u4e86\u5176\u7ecf\u6d4e\u5bff\u547d\u7684\u7ec8\u70b9\u3002<\/p>\n<p>\u5728\u5347\u7ea7\u8fc7\u7a0b\u7684\u65e9\u671f\uff0c\u60a8\u9700\u8981\u786e\u5b9a\u54ea\u79cd\u6280\u672f\u53ef\u4ee5\u4e3a\u60a8\u63d0\u4f9b\u6700\u4f73\u8986\u76d6\u8303\u56f4\uff0c\u800c\u65e0\u9700\u82b1\u8d39\u989d\u5916\u7684\u65e0\u7ebf\u7535\u7ad9\u70b9\u3002\u516c\u7528\u4e8b\u4e1a\u7b49\u5927\u578b\u7ec4\u7ec7\u901a\u5e38\u4f1a\u8d2d\u4e70\u96c6\u7fa4\u65e0\u7ebf\u7535\u89e3\u51b3\u65b9\u6848\uff0c\u4ee5\u63d0\u4f9b\u5e7f\u57df\u8c03\u5ea6\u548c\u57fa\u4e8e\u56e2\u961f\u7684\u901a\u4fe1\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u60a8\u5c06\u80fd\u591f\u91cd\u590d\u4f7f\u7528\u73b0\u6709\u7684\u65e0\u7ebf\u7535\u7ad9\u70b9\uff0c\u5e76\u4ece\u65b0\u6295\u8d44\u4e2d\u4f53\u9a8c\u5230\u7c7b\u4f3c\u7684\u8986\u76d6\u8303\u56f4\u3002<\/p>\n<p>\u9700\u8981\u8003\u8651\u7684\u4e24\u79cd\u6570\u5b57\u96c6\u7fa4\u65e0\u7ebf\u7535\u6280\u672f\u662f DMR \u548c TETRA\u3002\u4e3a\u4e86\u786e\u5b9a\u54ea\u4e2a\u63d0\u4f9b\u66f4\u597d\u7684\u8986\u76d6\u8303\u56f4\uff0c\u6211\u4eec\u9700\u8981\u4e00\u79cd\u5ba2\u89c2\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u5f71\u54cd\u65e0\u7ebf\u7535\u8986\u76d6\u8303\u56f4\u7684\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<p>\u4f7f\u7528\u7684\u9891\u6bb5\uff0c\u5176\u4e2d\u8f83\u4f4e\u7684\u9891\u7387\u63d0\u4f9b\u66f4\u5927\u7684\u8986\u76d6\u8303\u56f4\u3002\u4f8b\u5982\uff0c\u5728\u6240\u6709\u6761\u4ef6\u76f8\u540c\u7684\u60c5\u51b5\u4e0b\uff0c150MHz \u7cfb\u7edf\u7684\u8986\u76d6\u8303\u56f4\u662f 400MHz \u7cfb\u7edf\u7684\u4e24\u500d\u3002<\/p>\n<p>\u5c4f\u853d\u65e0\u7ebf\u7535\u4fe1\u53f7\u8def\u5f84\u7684\u5730\u7406\u62d3\u6251\u7ed3\u6784\u6216\u4eba\u4e3a\u969c\u788d\u4f1a\u5f71\u54cd\u8986\u76d6\u8303\u56f4\u3002\u5c31\u672c\u6587\u800c\u8a00\uff0c\u4e0a\u8ff0\u56e0\u7d20\u5c06\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<p>\u672c\u6587\u5c06\u8ba8\u8bba\u4ee5\u4e0b\u5f71\u54cd\u8986\u76d6\u7387\u7684\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u65f6\u5206\u591a\u5740 (TDMA) \u65f6\u9699\u4e4b\u95f4\u7684\u95f4\u9699<\/li>\n<li>\u5ef6\u8fdf\u6269\u5c55\u53ca\u5176\u5bf9\u8c03\u5236\u7684\u5f71\u54cd<\/li>\n<li>\u5f71\u54cd\u65e0\u7ebf\u7535\u4fe1\u53f7\u8def\u5f84\u7684\u94fe\u8def\u9884\u7b97\u3002<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.decitone.com:8080\/wp-content\/uploads\/2022\/05\/202205171437-dmr-2.jpg\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1756\" src=\"http:\/\/www.decitone.com:8080\/wp-content\/uploads\/2022\/05\/202205171437-dmr-2.jpg\" alt=\"DMR\" width=\"1366\" height=\"768\" \/><\/a><\/p>\n<p><strong>TDMA \u95f4\u9694\u65f6\u95f4<\/strong><\/p>\n<p>\u8fd9\u662f\u4e24\u4e2a\u8fde\u7eed\u65f6\u9699\u4e4b\u95f4\u7684\u4fdd\u62a4\u671f\u3002\u8fdc\u79bb\u57fa\u7ad9\u53d1\u5c04\u7684\u65e0\u7ebf\u7535\uff0c\u7d27\u968f\u5176\u540e\u7684\u662f\u9760\u8fd1\u57fa\u7ad9\u7684\u7b2c\u4e8c\u65e0\u7ebf\u7535\u5728\u968f\u540e\u7684\u65f6\u9699\u53d1\u5c04\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u4e24\u4e2a\u6d88\u606f\u7684\u51b2\u7a81\u3002\u8fdc\u5904\u7684\u4fe1\u53f7\u5f88\u53ef\u80fd\u4f1a\u5931\u8d25\uff0c\u56e0\u4e3a\u5b83\u8f83\u5f31\u3002<\/p>\n<p>\u8fd9\u662f\u7531\u4e8e\u6765\u81ea\u8fdc\u5904\u65e0\u7ebf\u7535\u7684\u4fe1\u53f7\u9700\u8981\u989d\u5916\u7684\u65f6\u95f4\uff08\u4ee5\u5149\u901f\uff09\u5230\u8fbe\u57fa\u7ad9\u3002\u5f53\u8fd1\u7aef\u7535\u53f0\u5f00\u59cb\u4f20\u8f93\u65f6\uff0c\u6765\u81ea\u8fdc\u7aef\u7535\u53f0\u7684\u6d88\u606f\u53ef\u80fd\u4ecd\u5728\u5230\u8fbe\u3002\u8fd9\u88ab\u63cf\u8ff0\u4e3a\u8fd1\/\u8fdc\u6548\u5e94\u3002<\/p>\n<p>\u5728\u5b9e\u8df5\u4e2d\uff0c\u5982\u679c\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff0cDMR \u8303\u56f4\u7ea6\u4e3a 75 \u516c\u91cc\uff0cTETRA \u7ea6\u4e3a 30 \u516c\u91cc\u3002\u8fd9\u662f\u56e0\u4e3a DMR \u4e2d\u7684\u95f4\u9694\u65f6\u95f4\u66f4\u957f\u3002\u8fd9\u5728\u57ce\u5e02\u73af\u5883\u4e2d\u4e0d\u592a\u53ef\u80fd\u6210\u4e3a\u9650\u5236\u56e0\u7d20\uff0c\u4f46\u5728\u5e73\u5766\u7684\u519c\u6751\u73af\u5883\u4e2d\uff0c\u5b83\u53ef\u80fd\u5f88\u91cd\u8981\u3002<\/p>\n<p><strong>\u5ef6\u8fdf\u4f20\u64ad<\/strong><\/p>\n<p>\u5ef6\u8fdf\u6269\u5c55\u662f\u7531\u76f8\u540c\u7684\u4fe1\u53f7\u901a\u8fc7\u4e24\u6761\uff08\u6216\u66f4\u591a\u6761\uff09\u4e0d\u540c\u7684\u8def\u5f84\u5230\u8fbe\u63a5\u6536\u5668\u9020\u6210\u7684\u3002\u4e00\u4e2a\u4fe1\u53f7\u53ef\u80fd\u662f\u76f4\u63a5\u7684\uff0c\u53e6\u4e00\u4e2a\u4fe1\u53f7\u53ef\u80fd\u4f1a\u5728\u5176\u8def\u5f84\u4e2d\u7684\u7269\u4f53\u5468\u56f4\u53cd\u5c04\/\u5f2f\u66f2\uff0c\u56e0\u6b64\u6bcf\u4e2a\u4fe1\u53f7\u5728\u4e0d\u540c\u7684\u65f6\u95f4\u5230\u8fbe\u4f46\u5e45\u5ea6\u76f8\u4f3c\u3002\u8c03\u5236\u65b9\u6848\u7684\u901f\u5ea6\u6216\u590d\u6742\u6027\uff08\u6570\u636e\u5982\u4f55\u5e94\u7528\u4e8e\u65e0\u7ebf\u7535\u4fe1\u53f7\uff09\u51b3\u5b9a\u4e86\u5b83\u5bf9\u5ef6\u8fdf\u6269\u5c55\u7684\u654f\u611f\u7a0b\u5ea6\u3002<\/p>\n<p>\u5ef6\u8fdf\u6269\u5c55\u4ee5\u5fae\u79d2 (\u03bcS) \u4e3a\u5355\u4f4d\u6d4b\u91cf &#8211; \u8f83\u9ad8\u7684\u503c\u66f4\u80fd\u5bb9\u5fcd\u6269\u5c55\u3002DMR \u7684\u5ef6\u8fdf\u6269\u5c55\u5bb9\u9650\u4e3a 28\u03bcS\uff0c\u800c TETRA \u4e3a 15\u03bcS\u3002\u540c\u6837\uff0c\u8fd9\u4e0d\u592a\u53ef\u80fd\u6210\u4e3a\u57ce\u5e02\u5730\u533a\u6216\u5f00\u653e\u519c\u6751\u5730\u533a\u7684\u4e00\u4e2a\u56e0\u7d20\uff0c\u56e0\u4e3a\u5178\u578b\u7684\u5ef6\u8fdf\u4f20\u64ad\u7ea6\u4e3a 5\u03bcS\u3002\u867d\u7136\u5b83\u4f1a\u5f71\u54cd\u5177\u6709\u5d0e\u5c96\u5730\u5f62\u3001\u60ac\u5d16\u548c\u6ca1\u6709\u76f4\u63a5\u65e0\u7ebf\u7535\u8def\u5f84\u7684\u5ce1\u8c37\u7684\u519c\u6751\u73af\u5883\uff0c\u4f46\u5b83\u53ea\u53ef\u80fd\u53d1\u751f\u5728\u8986\u76d6\u533a\u57df\u7684\u8fb9\u7f18\u9644\u8fd1\u3002<\/p>\n<p><strong>\u94fe\u63a5\u9884\u7b97<\/strong><\/p>\n<p>\u94fe\u8def\u9884\u7b97\u51b3\u5b9a\u4e86\u5728\u901a\u4fe1\u5931\u8d25\u4e4b\u524d\u53d1\u5c04\u673a\u548c\u63a5\u6536\u673a\u4e4b\u95f4\u53ef\u4ee5\u5bb9\u5fcd\u7684\u6700\u5927\u53ef\u80fd\u4fe1\u53f7\u635f\u5931\u3002\u5982\u679c\u6211\u4eec\u8ba1\u7b97\u57fa\u7ad9\u53d1\u5c04\u5668\uff08\u9ad8\u7ad9\u70b9\uff09\u5230\u65e0\u7ebf\u7535\u7ec8\u7aef\u63a5\u6536\u5668\uff08\u4e0b\u884c\u94fe\u8def\uff09\u7684\u94fe\u8def\u9884\u7b97\u4ee5\u53ca\u65e0\u7ebf\u7535\u7ec8\u7aef\uff08\u4fbf\u643a\u5f0f\uff09\u548c\u57fa\u7ad9\u63a5\u6536\u5668\uff08\u4e0a\u884c\u94fe\u8def\uff09\u4e4b\u95f4\u7684\u65e0\u7ebf\u7535\u4fe1\u53f7\u8def\u5f84\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u6027\u80fd\u5dee\u5f02. \u6b64\u8868\u663e\u793a\u4e86\u786e\u5b9a\u65e0\u7ebf\u7535\u80fd\u529b\u7684\u53c2\u6570\uff0c\u6bd4\u8f83\u4e86 DMR \u548c TETRA\u3002\u65e0\u7ebf\u7ec8\u7aef\u7075\u654f\u5ea6\u7684\u8d1f\u503c\u8d8a\u5927\u8d8a\u597d\u3002\u4e0e\u4e0b\u884c\u94fe\u8def\u4e2d\u7684 TETRA \u76f8\u6bd4\uff0cDMR\uff08\u4fdd\u5b88\u503c\uff09\u7684 4.3dB \u4f18\u52bf\u76f8\u5f53\u4e8e\u534a\u5f84\u589e\u52a0\u7ea6 1.5 \u500d\uff0c\u6216 DMR \u8986\u76d6\u533a\u57df\u7684\u4e24\u500d\u4ee5\u4e0a\u3002<\/p>\n<p>\u76ee\u524d\uff0cDMR\u548cTetra\u662f\u4f7f\u7528\u975e\u5e38\u5e7f\u6cdb\u7684\u4e24\u79cd\u6570\u5b57\u96c6\u7fa4\u7cfb\u7edf\uff0c\u4e00\u822c\u800c\u8a00\uff0cTetra\u7cfb\u7edf\u7684\u7528\u6237\u4f7f\u7528\u5927\u533a\u5236\u7684\u8702\u7a9d\u7f51\u7edc\u6765\u8fdb\u884c\u533a\u57df\u8986\u76d6\u3002DMR\u7684\u7528\u6237\u591a\u4e3a\u666e\u901a\u6a21\u62df\u5bf9\u8bb2\u673a\u7684\u6570\u5b57\u5316\u6539\u9020\u4e0e\u5347\u7ea7\u3002\u5f53\u7136\uff0c\u4e5f\u6709\u4e0d\u5c11\u7684\u7528\u6237\u91c7\u7528\u4e86DMR\u7cfb\u7edf\u7684\u7f51\u7edc\u3002\u53e6\u5916\u4e00\u4e2a\u660e\u663e\u7684\u4f8b\u5b50\u662f\u4e2d\u56fd\u7684\u8b66\u7528PDT\u7cfb\u7edf\uff0c\u5c31\u662f\u5728\u4f9d\u6258\u4e8eDMR\u7cfb\u7edf\u8bbe\u8ba1\u7684\u4e00\u5957\u9002\u5408\u4e8e\u4e2d\u56fd\u4f7f\u7528\u7684\u6570\u5b57\u96c6\u7fa4\u7cfb\u7edf\uff0c\u76ee\u524dPDT\u7cfb\u7edf\u5df2\u7ecf\u5360\u636e\u4e86\u4e3b\u6d41\uff0c\u53e6\u5916\u8fd8\u6709\u4e00\u90e8\u5206\u662f\u65e9\u671f\u5f15\u8fdb\u5efa\u8bbe\u7684Tetra\u7f51\u7edc\u3002<\/p>\n<p><a href=\"http:\/\/www.decitone.com\/\">\u5317\u4eac\u5fb7\u897f\u7279\u79d1\u6280<\/a>\u7684AOS\u7cfb\u5217<a href=\"http:\/\/www.decitone.com\/new-products#anchor-cluter-talkback-gateway\">\u96c6\u7fa4\u7f51\u5173<\/a>\uff0c\u53ef\u4ee5\u8f7b\u677e\u7684\u5c06<a href=\"http:\/\/www.decitone.com\/pag2020-cluster-interact-gateway\">DMR\uff0cPDT\u4e0eTetra\u7cfb\u7edf\u4e92\u76f8\u878d\u5408<\/a>\uff0c\u4fdd\u62a4\u5ba2\u6237\u7684\u524d\u671f\u6295\u8d44\uff0c\u4e3a\u5ba2\u6237\u7684\u901a\u4fe1\u7cfb\u7edf\u5347\u7ea7\u6539\u9020\u63d0\u4f9b\u66f4\u52a0\u7075\u6d3b\uff0c\u7ecf\u6d4e\u7684\u65b9\u6848\u3002\u6b22\u8fce\u60a8\u6765\u7535\u8be6\u7ec6\u54a8\u8be2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u7531\u4e8e\u8fc7\u65f6\u3001\u76d1\u7ba1\u8981\u6c42\u6216\u65e0\u6cd5\u63d0\u4f9b\u6570\u5b57\u65e0\u7ebf\u7535\u7684\u5546\u4e1a\u5229\u76ca\uff0c\u8bb8\u591a\u901a\u4fe1\u7cfb\u7edf\u90fd\u8fbe\u5230\u4e86\u5176\u7ecf\u6d4e\u5bff\u547d\u7684\u7ec8\u70b9<\/p>\n","protected":false},"author":1,"featured_media":1755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/posts\/1754"}],"collection":[{"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/comments?post=1754"}],"version-history":[{"count":2,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/posts\/1754\/revisions"}],"predecessor-version":[{"id":1758,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/posts\/1754\/revisions\/1758"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/media\/1755"}],"wp:attachment":[{"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/media?parent=1754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/categories?post=1754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decitone.com\/blog\/wp-json\/wp\/v2\/tags?post=1754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}