{"id":633,"date":"2025-06-07T17:46:42","date_gmt":"2025-06-07T09:46:42","guid":{"rendered":"https:\/\/tekdf.com\/?p=633"},"modified":"2025-06-07T18:33:07","modified_gmt":"2025-06-07T10:33:07","slug":"krakensdr-direction-finding-background-theory","status":"publish","type":"post","link":"https:\/\/tekdf.com\/index.php\/2025\/06\/07\/krakensdr-direction-finding-background-theory\/","title":{"rendered":"KrakenSDR\u6d4b\u5411\u80cc\u666f\u7406\u8bba"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u6d4b\u5411\u80cc\u666f<\/h2>\n\n\n\n<p>\u5728\u65e0\u7ebf\u7535\u6d4b\u5411\u64cd\u4f5c\u4e2d\uff0c\u76ee\u6807\u662f\u786e\u5b9a\u67d0\u4e2a\u5c04\u9891\uff08RF\uff09\u53d1\u5c04\u6e90\u7684\u7cbe\u786e\u4f4d\u7f6e\u3002\u8be5\u53d1\u5c04\u6e90\u53ef\u80fd\u662f\u975e\u6cd5\u6216\u5e72\u6270\u6027\u7684\u53d1\u5c04\u5668\uff0c\u4e5f\u53ef\u80fd\u662f\u72d0\u72f8\u730e\u6355\u6bd4\u8d5b\u4e2d\u7684\u4fe1\u6807\u3001\u8d44\u4ea7\/\u5ba0\u7269\/\u91ce\u751f\u52a8\u7269\u8ddf\u8e2a\u4fe1\u6807\u3001\u641c\u6551\u4fe1\u6807\uff0c\u6216\u53ea\u662f\u4e00\u4e2a\u4e0d\u660e\u7684\u53ef\u7591\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p>\u8981\u901a\u8fc7\u4e09\u8fb9\u6d4b\u91cf\u6cd5\u5b9a\u4f4d\u53d1\u5c04\u6e90\uff0c\u9700\u8981\u4f7f\u7528\u65e0\u7ebf\u7535\u6d4b\u5411\u8bbe\u5907\u4ece\u591a\u4e2a\u4f4d\u7f6e\u6d4b\u5b9a\u6307\u5411\u53d1\u5c04\u6e90\u7684\u65b9\u4f4d\u89d2\u3002\u7136\u540e\u5c06\u8fd9\u4e9b\u65b9\u4f4d\u89d2\u7ed8\u5236\u5728\u5730\u56fe\u4e0a\uff0c\u5b83\u4eec\u7684\u4ea4\u6c47\u70b9\u5373\u4e3a\u5bf9\u53d1\u5c04\u6e90\u4f4d\u7f6e\u7684\u4f30\u8ba1\u3002<\/p>\n\n\n\n<p>\u7136\u800c\uff0c\u65e0\u7ebf\u7535\u6d4b\u5411\u7684\u65b9\u4f4d\u89d2\u901a\u5e38\u4f1a\u5b58\u5728\u51e0\u5ea6\u7684\u8bef\u5dee\uff0c\u5e76\u4e14\u7531\u4e8e\u201c\u591a\u5f84\u6548\u5e94\u201d\uff08multipath\uff09\u7684\u5b58\u5728\uff0c\u6d4b\u5411\u7ed3\u679c\u5f80\u5f80\u4f1a\u53d7\u5230\u8f83\u5927\u5f71\u54cd\uff0c\u5bfc\u81f4\u7cbe\u5ea6\u4e0b\u964d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u5411\u65b9\u6cd5<\/h2>\n\n\n\n<p><strong>1. \u57fa\u4e8e\u5b9a\u5411\u5929\u7ebf\u7684\u65b9\u6cd5\uff1a<\/strong><br>\u8fd9\u4e9b\u65b9\u6cd5\u4f7f\u7528\u5982\u516b\u6728\u5929\u7ebf\uff08Yagi\uff09\u7b49\u5b9a\u5411\u5929\u7ebf\uff0c\u7531\u7528\u6237\u624b\u52a8\u65cb\u8f6c\u5929\u7ebf\uff0c\u5bfb\u627e\u4fe1\u53f7\u529f\u7387\u6700\u5f3a\u7684\u65b9\u5411\uff0c\u5e76\u8bb0\u5f55\u8be5\u65b9\u5411\u3002\u7136\u540e\u5728\u5176\u4ed6\u4f4d\u7f6e\u91cd\u590d\u8fd9\u4e00\u8fc7\u7a0b\uff0c\u76f4\u5230\u80fd\u591f\u901a\u8fc7\u4e09\u89d2\u6d4b\u91cf\u5b9a\u4f4d\u53d1\u5c04\u5668\u7684\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<p>\u4e00\u4e9b\u66f4\u81ea\u52a8\u5316\u7684\u65b9\u6cd5\u53ef\u80fd\u4f1a\u4f7f\u7528\u73af\u5f62\u6392\u5217\u7684\u591a\u4e2a\u5b9a\u5411\u5929\u7ebf\u9635\u5217\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p><strong>2. \u62df\u591a\u666e\u52d2\uff08Pseudo-Doppler\uff09\u65b9\u6cd5\uff1a<\/strong><br>\u62df\u591a\u666e\u52d2\u65b9\u6cd5\u4f7f\u7528\u56fa\u5b9a\u7684\u5929\u7ebf\u9635\u5217\uff0c\u9635\u5217\u4e2d\u7684\u6bcf\u4e2a\u5929\u7ebf\u5355\u5143\u4f1a\u4ee5\u6781\u77ed\u65f6\u95f4\u8f6e\u6d41\u4f9d\u6b21\u6fc0\u6d3b\uff0c\u8fd9\u6a21\u62df\u4e86\u4e00\u4e2a\u5929\u7ebf\u4ee5\u6781\u9ad8\u901f\u5ea6\u5728\u6c34\u5e73\u9762\u4e0a\u65cb\u8f6c\u7684\u6548\u679c\u3002\u5f53\u5929\u7ebf\u201c\u65cb\u8f6c\u201d\u671d\u5411\u4fe1\u53f7\u6e90\u65f6\uff0c\u63a5\u6536\u5230\u7684\u9891\u7387\u4f1a\u5347\u9ad8\uff1b\u5f53\u201c\u65cb\u8f6c\u201d\u80cc\u79bb\u4fe1\u53f7\u6e90\u65f6\uff0c\u9891\u7387\u5219\u4f1a\u964d\u4f4e\u3002\u901a\u8fc7\u5206\u6790\u8fd9\u4e9b\u9891\u7387\u53d8\u5316\uff0c\u53ef\u4ee5\u786e\u5b9a\u4fe1\u53f7\u7684\u65b9\u5411\u3002LoJack \u7cfb\u7edf\uff08\u7528\u4e8e\u8b66\u65b9\u8ffd\u8e2a\u88ab\u76d7\u8f66\u8f86\uff09\u5c31\u4f7f\u7528\u4e86\u8fd9\u79cd\u8f83\u65e9\u671f\u7684\u62df\u591a\u666e\u52d2\u6d4b\u5411\u6280\u672f\u3002<\/p>\n\n\n\n<p>\u4e1a\u4f59\u65e0\u7ebf\u7535\u9886\u57df\u4e2d\u6709\u591a\u79cd\u62df\u591a\u666e\u52d2\u8bbe\u5907\uff0c\u5982\u4f7f\u7528\u666e\u901a\u626b\u63cf\u63a5\u6536\u673a\u7684 RDF42 \u548c DDF2020T\u3002\u5f00\u6e90\u9879\u76ee Opera Cake \u4e5f\u4e3a HackRF \u63d0\u4f9b\u4e86\u62df\u591a\u666e\u52d2\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p><strong>3. \u5230\u8fbe\u65f6\u95f4\u5dee\uff08TDoA, Time Difference of Arrival\uff09\uff1a<\/strong><br>TDoA \u65b9\u6cd5\u9700\u8981\u591a\u4e2a\u65f6\u95f4\u540c\u6b65\u7684\u65e0\u7ebf\u7535\u8bbe\u5907\u5206\u5e03\u5728\u4e00\u5b9a\u8ddd\u79bb\u8303\u56f4\u5185\u3002\u6bcf\u4e2a\u8bbe\u5907\u8bb0\u5f55\u63a5\u6536\u5230\u4fe1\u53f7\u7684\u65f6\u95f4\u5dee\uff0c\u7136\u540e\u5229\u7528\u8fd9\u4e9b\u65f6\u95f4\u5dee\u8ba1\u7b97\u63a5\u6536\u5668\u4e4b\u95f4\u7684\u53cc\u66f2\u7ebf\u8f68\u8ff9\uff0c\u8fdb\u800c\u5b9a\u4f4d\u4fe1\u53f7\u6e90\u3002\u8fd9\u79cd\u65b9\u6cd5\u662f KiwiSDR \u6240\u91c7\u7528\u7684\u3002<\/p>\n\n\n\n<p><strong>4. \u76f8\u5173\u5e72\u6d89\u6d4b\u5411\uff08Correlative Interferometry\uff09\uff1a<\/strong><br>\u8be5\u65b9\u6cd5\u901a\u8fc7\u63d0\u53d6\u5929\u7ebf\u9635\u5217\u4e2d\u63a5\u6536\u5230\u4fe1\u53f7\u4e4b\u95f4\u7684\u76f8\u4f4d\u5dee\u6765\u5224\u65ad\u65b9\u5411\u3002KrakenSDR \u5c31\u662f\u91c7\u7528\u8fd9\u4e00\u6d4b\u5411\u65b9\u6cd5\u7684\u5178\u578b\u4ee3\u8868\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u591a\u5f84\u6548\u5e94\uff08Multipath\uff09<\/h2>\n\n\n\n<p>\u591a\u5f84\u6548\u5e94\u662f\u6307\u76ee\u6807\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u88ab\u5730\u5f62\u3001\u5efa\u7b51\u7269\u6216\u8f66\u8f86\u7b49\u7269\u4f53\u53cd\u5c04\u6216\u6298\u5c04\uff0c\u5bfc\u81f4\u65e0\u7ebf\u7535\u6d4b\u5411\u7cfb\u7edf\u5c06\u53cd\u5c04\u4fe1\u53f7\u8bef\u8ba4\u4e3a\u662f\u539f\u59cb\u4fe1\u53f7\u6e90\u3002\u8fd9\u79cd\u60c5\u51b5\u4f1a\u4f7f\u6d4b\u5f97\u7684\u65b9\u4f4d\u89d2\u504f\u79bb\u5b9e\u9645\u65b9\u5411\uff0c\u751a\u81f3\u53ef\u80fd\u4ea7\u751f\u5b8c\u5168\u9519\u8bef\u7684\u8bfb\u6570\u3002\u6700\u4e25\u91cd\u7684\u60c5\u51b5\u662f\uff0c\u5f53\u63a5\u6536\u5929\u7ebf\u9635\u5217\u65e0\u6cd5\u4e0e\u4fe1\u53f7\u6e90\u5f62\u6210\u89c6\u8ddd\uff08Line-of-Sight, LOS\uff09\u8def\u5f84\u65f6\uff0c\u7cfb\u7edf\u53ea\u80fd\u63a5\u6536\u5230\u53cd\u5c04\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p>\u4e00\u4e2a\u7c7b\u6bd4\u7684\u4f8b\u5b50\u662f\uff1a\u4f60\u53ef\u80fd\u5728\u5ba4\u5185\u770b\u5230\u5899\u9762\u4e0a\u7684\u9633\u5149\u3002\u5982\u679c\u4f60\u770b\u4e0d\u5230\u592a\u9633\u672c\u8eab\uff0c\u53c8\u4e0d\u4e86\u89e3\u5149\u7684\u4f20\u64ad\u539f\u7406\uff0c\u53ef\u80fd\u4f1a\u8bef\u4ee5\u4e3a\u5149\u6e90\u662f\u5899\u58c1\u3001\u955c\u5b50\u6216\u8005\u7a97\u6237\uff0c\u800c\u4e0d\u662f\u592a\u9633\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u5982\u679c\u6211\u4eec\u5728\u4e00\u4e2a\u591a\u5f84\u6548\u5e94\u663e\u8457\u7684\u4f4d\u7f6e\uff08\u901a\u5e38\u662f\u7531\u4e8e\u7f3a\u4e4f\u89c6\u8ddd\u8def\u5f84\uff09\u8fdb\u884c\u5355\u70b9\u6d4b\u5411\uff0c\u5c31\u53ef\u80fd\u5bf9\u4fe1\u53f7\u6765\u6e90\u65b9\u5411\u505a\u51fa\u9519\u8bef\u5224\u65ad\u3002\u4e3a\u4e86\u83b7\u5f97\u66f4\u51c6\u786e\u7684\u4f4d\u7f6e\uff0c\u6211\u4eec\u9700\u8981\u5728\u591a\u4e2a\u5730\u70b9\u8fdb\u884c\u591a\u6b21\u6d4b\u5411\uff0c\u501f\u6b64\u5e73\u5747\u6389\u90a3\u4e9b\u7531\u4e8e\u591a\u5f84\u6548\u5e94\u800c\u4ea7\u751f\u7684\u504f\u5dee\u8bfb\u6570\u3002<\/p>\n\n\n\n<p>\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u7684\u65b9\u5f0f\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u591a\u4e2a\u5730\u70b9\u90e8\u7f72\u6d4b\u5411\u7ad9\u70b9\uff0c\u6bcf\u4e2a\u7ad9\u70b9\u914d\u5907 KrakenSDR \u548c\u5929\u7ebf\u9635\u5217\uff1b<\/li>\n\n\n\n<li>\u6216\u8005\u4f7f\u7528\u5355\u4e2a KrakenSDR \u642d\u8f7d\u4e8e\u8f66\u8f86\u4e2d\u79fb\u52a8\uff0c\u5e76\u5728\u591a\u4e2a\u4f4d\u7f6e\u8fdb\u884c\u6d4b\u91cf\u91c7\u6837\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u5916\uff0c\u4f7f\u7528\u66f4\u5927\u7684\u5929\u7ebf\u9635\u5217\uff08\u524d\u63d0\u662f\u9635\u5217\u5143\u95f4\u8ddd\u4ecd\u5c0f\u4e8e\u534a\u6ce2\u957f\uff09\u4e5f\u6709\u52a9\u4e8e\u51cf\u8f7b\u591a\u5f84\u6548\u5e94\u7684\u5f71\u54cd\u3002\u8f83\u5c0f\u7684\u9635\u5217\u5206\u8fa8\u7387\u8f83\u4f4e\uff0c\u5bb9\u6613\u5c06\u591a\u5f84\u4fe1\u53f7\u6df7\u5165\u4e3b\u74e3\uff0c\u4ece\u800c\u5bfc\u81f4\u6d4b\u5411\u7ed3\u679c\u504f\u5dee\uff1b\u800c\u8f83\u5927\u7684\u9635\u5217\u5177\u6709\u66f4\u9ad8\u7684\u5206\u8fa8\u7387\uff0c\u591a\u5f84\u4fe1\u53f7\u66f4\u53ef\u80fd\u4ee5\u72ec\u7acb\u3001\u4e14\u8f83\u5f31\u7684\u65c1\u74e3\u5f62\u5f0f\u51fa\u73b0\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u8bc6\u522b\u548c\u5ffd\u7565\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u79fb\u52a8\u8f66\u8f7d\u6d4b\u5411\u7406\u8bba<\/h2>\n\n\n\n<p>\u8bb8\u591a\u7b80\u5355\u7684\u65e0\u7ebf\u7535\u6d4b\u5411\u7cfb\u7edf\u9700\u8981\u7528\u6237\u9a7e\u9a76\u8f66\u8f86\u524d\u5f80\u4e0d\u540c\u5730\u70b9\uff0c\u624b\u52a8\u8fdb\u884c\u6d4b\u5411\u5e76\u5c06\u65b9\u4f4d\u89d2\u7ed8\u5236\u5728\u5730\u56fe\u4e0a\u3002<\/p>\n\n\n\n<p>\u5728 KrakenSDR \u7cfb\u7edf\u4e2d\uff0c\u6211\u4eec\u5229\u7528\u4e86\u73b0\u4ee3\u667a\u80fd\u624b\u673a\u7684\u6280\u672f\uff0c\u5982\u5730\u56fe\u670d\u52a1\u3001GPS \u548c\u6307\u5357\u9488\u4f20\u611f\u5668\u3002\u968f\u7740\u8f66\u8f86\u79fb\u52a8\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8bb0\u5f55 KrakenSDR \u751f\u6210\u7684\u65b9\u4f4d\u89d2\uff0c\u5e76\u7ed3\u5408\u667a\u80fd\u624b\u673a\u4f20\u611f\u5668\u63d0\u4f9b\u7684\u5f53\u524d\u4f4d\u7f6e\u548c\u671d\u5411\u4fe1\u606f\uff0c\u91c7\u96c6\u6570\u767e\u6b21\u6d4b\u5411\u8bfb\u6570\u3002\u968f\u7740\u65f6\u95f4\u79ef\u7d2f\uff0c\u7cfb\u7edf\u4f1a\u901a\u8fc7\u8ba1\u7b97\u8fd9\u4e9b\u65b9\u4f4d\u89d2\u7684\u5e73\u5747\u4ea4\u70b9\uff0c\u9010\u6b65\u5b9a\u4f4d\u53d1\u5c04\u6e90\u7684\u4f4d\u7f6e\u3002\u6211\u4eec\u4f7f\u7528 MapBox \u5730\u56fe\u670d\u52a1\u5c06\u8fd9\u4e9b\u6570\u636e\u53ef\u89c6\u5316\u663e\u793a\u5728\u5730\u56fe\u4e0a\uff0c\u65b9\u4fbf\u7528\u6237\u7406\u89e3\uff0c\u5e76\u4e14\u8fd8\u5185\u7f6e\u4e86\u9010\u6b65\u5bfc\u822a\u529f\u80fd\uff0c\u5e2e\u52a9\u7528\u6237\u65e0\u9700\u67e5\u770b\u5730\u56fe\u4e5f\u80fd\u76f4\u63a5\u524d\u5f80\u4fe1\u53f7\u6e90\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<p><strong>\u9ad8\u7ea7\u529f\u80fd\uff1a<\/strong> KrakenSDR 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href=\"https:\/\/tekdf.com\/index.php\/2025\/05\/30\/krakensdr-product-introduction\/\">KRAKENSDR\u4ea7\u54c1\u4ecb\u7ecd<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/tekdf.com\/index.php\/2025\/06\/05\/what-is-krakensdr\/\">\u4ec0\u4e48\u662f KrakenSDR?<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/tekdf.com\/index.php\/2025\/06\/07\/krakensdr-direction-finding-background-theory\/\">KrakenSDR\u6d4b\u5411\u80cc\u666f\u7406\u8bba<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/tekdf.com\/index.php\/2025\/06\/07\/krakensdr-antenna-array-setup\/\">KrakenSDR \u5929\u7ebf\u9635\u5217\u8bbe\u7f6e<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6d4b\u5411\u80cc\u666f \u5728\u65e0\u7ebf\u7535\u6d4b\u5411\u64cd\u4f5c\u4e2d\uff0c\u76ee\u6807\u662f\u786e\u5b9a\u67d0\u4e2a\u5c04\u9891\uff08RF\uff09\u53d1\u5c04\u6e90\u7684\u7cbe\u786e\u4f4d\u7f6e\u3002\u8be5\u53d1\u5c04\u6e90\u53ef\u80fd\u662f\u975e\u6cd5\u6216\u5e72\u6270\u6027\u7684\u53d1\u5c04\u5668\uff0c 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