{"id":1615,"date":"2021-01-16T20:58:26","date_gmt":"2021-01-16T12:58:26","guid":{"rendered":"https:\/\/bd6mm.cn\/blog\/?p=1615"},"modified":"2021-01-16T20:58:27","modified_gmt":"2021-01-16T12:58:27","slug":"approaching_amateur_satellite_communication_your_first_amateur_satellite_communication_its_simpler_than_you_think_3","status":"publish","type":"post","link":"https:\/\/bd6mm.cn\/blog\/2021\/01\/approaching_amateur_satellite_communication_your_first_amateur_satellite_communication_its_simpler_than_you_think_3.html","title":{"rendered":"\u300a\u8d70\u8fd1\u4e1a\u4f59\u536b\u661f\u901a\u4fe1\u300b| \u4f60\u7684\u7b2c\u4e00\u6b21\u4e1a\u4f59\u536b\u661f\u901a\u4fe1\uff1a\u5b83\u6bd4\u4f60\u60f3\u8c61\u4e2d\u66f4\u7b80\u5355\uff08\u4e09\uff09"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"font-size: 20px;\"><strong>\u4e1a\u4f59\u536b\u661f\u901a\u4fe1\u5929\u7ebf\uff08\u4e0a\uff09<\/strong><\/span><\/p>\n<blockquote>\n<p>by Keith Baker, KB1SF\/VA3KSF, kb1sf@amsat.org<\/p>\n<p>\u672c\u6587\u539f\u9898\u4e3a\u300a\u5f00\u542f\u4e1a\u4f59\u536b\u661f\u901a\u4fe1\u4e4b\u65c5III\u300b\u53d1\u8868\u4e8e\u300a\u76d1\u6d4b\u65f6\u62a5\u300b<\/p>\n<p>\uff08Brasstown, NC 28902\uff09<\/p>\n<\/blockquote>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u901a\u8fc7\u524d\u9762\u4e24\u7bc7\u6587\u7ae0\u7684\u4ecb\u7ecd\uff0c\u5f88\u591a\u4e1a\u4f59\u65e0\u7ebf\u7535\u7231\u597d\u8005\u5bf9\u536b\u661f\u901a\u4fe1\u5e94\u8be5\u5df2\u7ecf\u719f\u6089\u4e86\u3002\u6216\u8bb8\uff0c\u4ed6\u4eec\u5f00\u59cb\u5c1d\u8bd5\u201c\u6253\u5361\u201d\u6bcf\u4e00\u4e2a\u6ca1\u6709\u901a\u8054\u7684Maidenhead\u533a\u5757\u5750\u6807\u6216\u8005\u50cf\u77ed\u6ce2\u7231\u597d\u8005\u4e00\u6837\u5c1d\u8bd5\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002\u957f\u65f6\u95f4\u7684\u536b\u661f\u901a\u4fe1\uff0c\u7231\u597d\u8005\u4f1a\u8d8a\u6765\u8d8a\u611f\u5230\u65e2\u4e3e\u7740\u5929\u7ebf\uff0c\u53c8\u62ff\u7740\u5bf9\u8bb2\u673a\u7684\u8f9b\u82e6\u3002\u56e0\u6b64\uff0c\u5efa\u8bae\u7ecf\u5e38\u901a\u4fe1\u7684\u7231\u597d\u8005\u4e3a\u81ea\u5df1\u7684\u5730\u7403\u7ad9\u642d\u5efa\u4e00\u4e2a\u56fa\u5b9a\u5929\u7ebf\u9635\u5217\uff0c\u9884\u7b97\u6709\u9650\u7684\u521d\u5b66\u8005\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5168\u5411\u5929\u7ebf\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u5730\u7403\u7ad9\u4f7f\u7528\u5168\u5411\u5929\u7ebf\u53ef\u4ee5\u7701\u53bb\u5929\u7ebf\u9a71\u52a8\u88c5\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u7b80\u5316\u5929\u7ebf\u65cb\u8f6c\u5668\u3002\u5728\u536b\u661f\u8fc5\u901f\u8fc7\u5883\u671f\u95f4\uff0c\u7231\u597d\u8005\u5c31\u80fd\u96c6\u4e2d\u7cbe\u529b\u53bb\u5bfb\u627e\u548c\u8ddf\u8e2a\u4e0b\u884c\u4fe1\u53f7\uff0c\u4f46\u4e0d\u662f\u6240\u6709\u7684\u5168\u5411\u5929\u7ebf\u90fd\u9002\u7528\u4e8e\u536b\u661f\u901a\u4fe1\uff0c\u6240\u4ee5\u672c\u6587\u5c06\u4fa7\u91cd\u4ecb\u7ecd\u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u5730\u7403\u7ad9\u5929\u7ebf\u3002<\/p>\n<p><span 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(RHCP)\u4e0e\u5de6\u65cb\u5706\u6781\u5316(LHCP)\u63a5\u6536\u635f\u8017\u53ea\u67093dB\u3002\u867d\u7136\u8fd9\u4e2a\u635f\u8017\u7ea6\u5360\u4e0a\u3001\u4e0b\u884c\u94fe\u8def\u4fe1\u53f7\u529f\u7387\u7684\u4e00\u534a\uff0c\u4f46\u662f\u4f7f\u7528\u7ebf\u6781\u5316\u5929\u7ebf\u63a5\u6536\u536b\u661f\u4fe1\u53f7\u7684\u635f\u8017\u5927\u7ea6\u670930-40dB\u3002\u6240\u4ee5\uff0c\u5f88\u591a\u76f8\u5bf9\u7b80\u5355\u7684\u5168\u5411\u5929\u7ebf\u4e5f\u88ab\u8bbe\u8ba1\u6210\u5177\u6709\u9ad8\u89d2\u5ea6\u3001\u5706\u6781\u5316\u7684\u7279\u6027\u3002<\/p>\n<p><span style=\"font-size: 16px;\"><strong>\u6253\u86cb\u5668\u5929\u7ebf<\/strong><\/span><\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/bd6mm.cn\/sina\/large\/006d72EMly1gmptwqgi9pj306f06rjrm.jpg\"\/><\/p>\n<p style=\"text-align: center;\">\u56fe1&nbsp; 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style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/bd6mm.cn\/sina\/large\/006d72EMly1gmptwrk9lpj306e08xdg8.jpg\"\/><\/p>\n<p style=\"text-align: center;\">\u56fe2&nbsp; &nbsp;\u5728\u6253\u86cb\u5668\u4e0b\u52a0\u5165\u53cd\u5c04\u632f\u5b50\u4f1a\u589e\u52a0\u5929\u7ebf\u589e\u76ca<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/bd6mm.cn\/sina\/large\/006d72EMly1gmptwsyhbdj306z05uq3z.jpg\"\/><\/p>\n<p style=\"text-align: center;\">\u56fe3&nbsp; &nbsp; 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style=\"font-size: 16px;\"><strong>\u56db\u81c2\u87ba\u65cb\u5929\u7ebf<\/strong><\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u536b\u661f\u5929\u7ebf\u7cfb\u7edf\u81ea\u65cb\uff0c\u4ee5\u53ca\u6cd5\u62c9\u7b2c\u65cb\u8f6c\u6548\u5e94\uff0c\u5bfc\u81f4\u536b\u661f\u4fe1\u53f7\u6781\u5316\u4e0d\u53ef\u6d4b\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u91c7\u7528\u7ebf\u6781\u5316\u5929\u7ebf\u5c06\u4f1a\u51fa\u73b0\u6df1\u8870\u843d\uff0c\u4f46\u91c7\u7528\u87ba\u65cb\u5929\u7ebf\uff0c\u8fd9\u79cd\u8870\u843d\u57fa\u672c\u4e0a\u53ef\u4ee5\u5f97\u5230\u6d88\u9664\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u87ba\u65cb(helical)\u5929\u7ebf\u662f\u4e00\u79cd\u5177\u6709\u87ba\u65cb\u5f62\u72b6\u7684\u5929\u7ebf\uff0c\u5b83\u7531\u5bfc\u7535\u6027\u80fd\u826f\u597d\u7684\u91d1\u5c5e\u87ba\u65cb\u7ebf\u7ec4\u6210\u3002\u87ba\u65cb\u5929\u7ebf\u7684\u8f90\u5c04\u65b9\u5411\u4e0e\u87ba\u65cb\u7ebf\u5706\u5468\u957f\u6709\u5173\u3002\u5f53\u87ba\u65cb\u7ebf\u7684\u5706\u5468\u957f\u6bd4\u4e00\u4e2a\u6ce2\u957f\u5c0f\u5f88\u591a\u65f6\uff0c\u8f90\u5c04\u6700\u5f3a\u7684\u65b9\u5411\u5782\u76f4\u4e8e\u87ba\u65cb\u8f74\uff1b\u5f53\u87ba\u65cb\u7ebf\u5706\u5468\u957f\u4e3a\u4e00\u4e2a\u6ce2\u957f\u7684\u6570\u91cf\u7ea7\u65f6\uff0c\u6700\u5f3a\u8f90\u5c04\u51fa\u73b0\u5728\u87ba\u65cb\u65cb\u8f74\u65b9\u5411\u4e0a\u3002\u8fd9\u79cd\u5929\u7ebf\u6709\u4e24\u4e2a\u7279\u6027\u4f7f\u5f97\u5b83\u5728\u536b\u661f\u901a\u4fe1\u975e\u5e38\u6709\u5438\u5f15\u529b\uff0c\u7b2c\u4e00\u4e2a\u662f\u5929\u7ebf\u4e3a\u5706\u6781\u5316\uff1b\u7b2c\u4e8c\u4e2a\u662f\u5728\u76f8\u5f53\u5bbd\u7684\u9891\u6bb5\u5185\uff0c\u5177\u6709\u53ef\u4ee5\u9884\u6d4b\u7684\u8f90\u5c04\u56fe\u3001\u589e\u76ca\u548c\u7279\u5f81\u963b\u6297\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u56db\u81c2\u87ba\u65cb\uff08Quadrafilar Helicoidal\uff09\u5929\u7ebf\u662f\u7f8e\u56fd\u7ea6\u7ff0\u666e\u91d1\u65af\u5927\u5b66\u5e94\u7528\u7269\u7406\u5b9e\u9a8c\u5ba4\u535a\u58ebKilgus\u4e8e1968\u5e74\u63d0\u51fa\u7684\uff0c\u6700\u521d\u662f\u4e3a\u65e9\u671f\u592a\u7a7a\u63a2\u7d22\u7684\u822a\u5929\u5668\u8bbe\u8ba1\u7684\uff0c\u4e4b\u540e\u4eba\u4eec\u5bf9\u5176\u8fdb\u5165\u4e86\u6df1\u5165\u7684\u7814\u7a76\u3002\u8be5\u5929\u7ebf\u5177\u6709\u5fc3\u578b\u65b9\u5411\u56fe\u3001\u826f\u597d\u7684\u524d\u540e\u6bd4\u53ca\u4f18\u5f02\u7684\u5706\u6781\u5316\u7279\u6027\uff0c\u56e0\u6b64\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u536b\u661f\u901a\u4fe1\u7cfb\u7edf\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u56db\u81c2\u87ba\u65cb\u5f0f\u5929\u7ebf\uff08Quadrifilar\u2002Helix\u2002Antenna\u2002\uff09\u4e00\u822c\u7531\u56db\u6761\u6309\u7279\u5b9a\u89c4\u5219\u5f2f\u66f2\u7684\u91d1\u5c5e\u7ebf\u6761\u9576\u4e8e\u5706\u67f1\u5f62\u57fa\u6750\u4e0a\uff0c\u65e0\u9700\u4efb\u4f55\u63a5\u5730\u3002\u6bcf\u6839\u87ba\u65cb\u81c2\u7684\u957f\u5ea6\u4e3a\u56db\u5206\u4e4b\u4e00\u6ce2\u957f\u7684\u6574\u6570\u500d\uff0c\u5929\u7ebf\u53ef\u4ee5\u770b\u4f5c\u662f\u4e24\u80a1\u76f8\u4e92\u5782\u76f4\u4e8e\u8f74\u7ebf\u7684\u53cc\u81c2\u87ba\u65cb\u7ebf\u7ec4\u6210\uff0c\u5176\u9988\u7535\u76f8\u4f4d\u76f8\u5dee90\uff1b\u56db\u6839\u87ba\u65cb\u81c2\u9988\u7535\u7aef\u7684\u7535\u6d41\u5e45\u5ea6\u76f8\u7b49\uff0c\u5177\u6709\u5fc3\u5f62\u65b9\u5411\u56fe\u3001\u826f\u597d\u7684\u524d\u540e\u6bd4\u53ca\u4f18\u5f02\u7684\u5bbd\u6ce2\u675f\u5706\u6781\u5316\u7279\u6027\uff0c\u6ce2\u675f\u5bbd\u5ea6\u901a\u5e38\u5927\u4e8e90\u5ea6\uff0c\u7531\u4e8e\u5904\u5728\u8c10\u632f\u72b6\u6001\uff0c\u87ba\u65cb\u7ebf\u4e0a\u7684\u7535\u6d41\u5206\u5e03\u8fd1\u4f3c\u8ba4\u4e3a\u662f\u6b63\u5f26\u5206\u5e03\uff0c\u7535\u6d41\u96f6\u70b9\u4f4d\u4e8e\u87ba\u65cb\u7ebf\u4e2d\u95f4\u3002\u6240\u4ee5\uff0c\u5176\u4e2d\u4e00\u6761\u53cc\u81c2\u87ba\u65cb\u7ebf\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u6839\u7ebf\u5076\u6781\u5b50\u53ca\u4e00\u6839\u534a\u73af\u5076\u6781\u5b50\u7ec4\u6210\uff0c\u5341\u5206\u9002\u5408\u7528\u4f5c\u536b\u661f\u901a\u4fe1\u7684\u63a5\u6536\u5929\u7ebf\u3002\u5929\u7ebf\u4f53\u79ef\u76f8\u5bf9\u8f83\u5c0f\uff0c\u5f88\u5bb9\u6613\u7528\u666e\u901a\u6750\u6599\u5982\u94dc\u7ba1\u548cPVC\u7ba1\u5efa\u9020\u3002\u4f46\u662f\uff0c\u5668\u4ef6\u7684\u957f\u5ea6\u548c\u95f4\u8ddd\u5fc5\u987b\u975e\u5e38\u7cbe\u786e\uff0c\u65b9\u80fd\u5b9e\u73b0\u4f18\u5f02\u7684\u5706\u6781\u5316\u7279\u6027\u3002<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/bd6mm.cn\/sina\/large\/006d72EMly1gmptwuslupj30720cpdh3.jpg\"\/><\/p>\n<p style=\"text-align: center;\">\u56fe4&nbsp; &nbsp;\u56db\u81c2\u87ba\u65cb\u5929\u7ebf<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u4e00\u4e9b\u4e1a\u4f59\u65e0\u7ebf\u7535\u7231\u597d\u8005\uff08\u4ee5\u53ca\u5176\u4ed6\u5bf9\u6c14\u8c61\u536b\u661f\u63a5\u6536\u611f\u5174\u8da3\u7684\u4eba\uff09\u5728\u5f88\u591a\u7f51\u7ad9\u8be6\u7ec6\u4ecb\u7ecd\u56db\u81c2\u87ba\u65cb\u5929\u7ebf\u7684\u8bbe\u8ba1\u548c\u6784\u9020\u7ec6\u8282\uff0c\u548c\u5728\u7ebf\u8ba1\u7b97\u5668\uff0c\u53ef\u4ee5\u901a\u8fc7\u8f93\u5165\u6240\u9700\u7684\u8c10\u632f\u9891\u7387\u6765\u8ba1\u7b97\u5929\u7ebf\u7684\u5143\u4ef6\u957f\u5ea6\u548c\u95f4\u8ddd\u3002<\/p>\n<p><span style=\"font-size: 16px;\"><strong>\u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf<\/strong><\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u7f8e\u56fd\u65e0\u7ebf\u7535\u516c\u53f8\u7684Nils Lindenblad\u662f\u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf\u7684\u53d1\u660e\u8005\u3002\u5927\u7ea6\u57281940\u5e74\uff0c\u4ed6\u8bbe\u8ba1\u51fa\u91c7\u75284\u4e2a\u540c\u76f8\u7b49\u6548\u63a5\u5165\u7684\u5076\u6781\u5b50\u632f\u5b50\uff0c\u6bcf\u6839\u632f\u5b50\u4e0e\u6c34\u5e73\u65b9\u5411\u503e\u659c30\u00b0\uff0c\u7b49\u8ddd\u5b89\u653e\u57281\/3\u6ce2\u957f\u76f4\u5f84\u7684\u5706\u5185\u3002\u8fd9\u79cd\u5929\u7ebf\u6781\u5316\u65b9\u5f0f\u4e3a\u5706\u6781\u5316\uff0c\u5b83\u7684\u5927\u90e8\u5206\u589e\u76ca\u51fa\u73b0\u5728\u5c0f\u4ef0\u89d2\u4e0a\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408\u4f4e\u8f68\u536b\u661f\u901a\u4fe1\u3002<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/bd6mm.cn\/sina\/large\/006d72EMly1gmptwwfcuej30d60hbtel.jpg\"\/><\/p>\n<p style=\"text-align: center;\">\u56fe5&nbsp; \u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u7531\u4e8e\u8be5\u5929\u7ebf\u662f\u4e00\u79cd\u5168\u5411\u5929\u7ebf\uff0c\u56e0\u6b64\u4e0d\u5fc5\u5c06\u5929\u7ebf\u5bf9\u7740\u536b\u661f\uff0c\u4e5f\u4e0d\u5fc5\u4f7f\u7528\u5929\u7ebf\u65cb\u8f6c\u5668\u3002\u9274\u4e8e\u6b64\uff0c\u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf\u5728\u4fbf\u643a\u5f0f\u6216\u4e34\u65f6\u536b\u661f\u901a\u4fe1\u4e2d\u7279\u522b\u6709\u7528\u3002\u7f51\u4e0a\u6709\u5927\u91cf\u5173\u4e8e\u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf\u7684\u6587\u7ae0\u3002Howard Sodja\uff08W6SHP\uff09\u5728\u4e0a\u4e16\u7eaa90\u5e74\u4ee3\u521d\u64b0\u5199\u4e86\u9488\u5bf9\u63a5\u6536\u536b\u661f\u4fe1\u53f7\u800c\u5bf9\u6797\u767b\u5e03\u83b1\u5fb7\u5929\u7ebf\u8fdb\u884c\u4f18\u5316\u8bbe\u8ba1\u7684\u7cfb\u5217\u6587\u7ae0:<a href=\"http:\/\/www.amsat.org\/amsat\/articles\/w6shp\/lindy.html\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.amsat.org\/amsat\/articles\/w6shp\/lindy.html<\/a>\u3002\u6b64\u5916\uff0cTony Monteiro\uff08AA2TX\uff09\u4e5f\u4ecb\u7ecd\u4e86\u4ed6\u6240\u8bbe\u8ba1\u7684\u5929\u7ebf\u6784\u9020\u7ec6\u8282\u3002\u7f51\u5740: <a href=\"http:\/\/www.qsl.net\/nwlarn\/sat\/70ParaLindy.pdf\" target=\"_self\" rel=\"noopener noreferrer\">http:\/\/www.qsl.net\/nwlarn\/sat\/70ParaLindy.pdf<\/a>\u3002<\/p>\n<p><\/p>\n<p><strong>\u7f16\u8bd1\uff1a\u9b4f\u6885\u82f1&nbsp; \u738b\u5b5f&nbsp; \u6768\u5a1f&nbsp; \u5f20\u78ca&nbsp; \u9a6c\u6653\u83b9<\/strong><\/p>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e1a\u4f59\u536b\u661f\u901a\u4fe1\u5929\u7ebf\uff08\u4e0a\uff09 by Keith Baker, KB1SF\/VA3KSF, kb1sf@amsat.o&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[172,1],"tags":[173],"class_list":["post-1615","post","type-post","status-publish","format-standard","hentry","category-amateur_satellite","category-amateur_radio","tag-y_y_w_x"],"_links":{"self":[{"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/posts\/1615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/comments?post=1615"}],"version-history":[{"count":0,"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/posts\/1615\/revisions"}],"wp:attachment":[{"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/media?parent=1615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/categories?post=1615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bd6mm.cn\/blog\/wp-json\/wp\/v2\/tags?post=1615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}