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\n\t\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u662f\u76ee\u524d\u7535\u5b50\u6d4b\u91cf<\/u>\u4eea\u5668\u4e2d\u53d1\u5c55\u6700\u4e3a\u5feb\u901f\u7684\u4ea7\u54c1\u4e4b\u4e00\u3002\u5b83\u65e2\u53ef\u8f93\u51fa\u6807\u51c6\u51fd\u6570\u4fe1\u53f7\uff0c\u4e5f\u53ef\u4ee5\u4ea7\u751f\u7531\u7528\u6237\u5b9a\u4e49\u7684\u975e\u6807\u51c6\u51fd\u6570\u6ce2\u5f62(\u4efb\u610f\u6ce2\u5f62)\u4fe1\u53f7\uff0c\u5e76\u4e14\u6709\u4e30\u5bcc\u7684\u6a21\u62df\u8c03\u5236(AM\uff0cFM\uff0cPM)\u548c\u6570\u5b57\u8c03\u5236 (FSK\uff0cPSK)\u529f\u80fd\uff0c\u80fd\u4e3a\u4e0d\u540c\u7684\u5e94\u7528\u9886\u57df\u63d0\u4f9b\u5404\u79cd\u6807\u51c6\u6216\u975e\u6807\u51c6\u4fe1\u53f7\uff0c\u5c24\u5176\u5728\u6c34\u4e0b\u58f0\u7eb3\u3001\u901a\u4fe1\u3001\u96f7\u8fbe\u5bfc\u822a\u3001\u7535\u5b50\u5bf9\u6297\u7b49\u88c5\u5907\u7684\u7814\u5236\u3001\u751f\u4ea7\u3001\u7ef4\u4fee\u4e2d\uff0c\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u4fe1\u53f7\u53d1\u751f\u5668\u3002\u57fa\u4e8e\u6570\u5b57\u9891\u7387\u5408\u6210<\/u>\u6280\u672f\uff0c\u7ed9\u51fa\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u8bbe\u8ba1\u65b9\u6848\u3002<\/p>\n

\n\t <\/div>\n

\n\t1 \u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u786c\u4ef6\u8bbe\u8ba1<\/p>\n

\n\t1.1 \u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u5de5\u4f5c\u539f\u7406<\/p>\n

\n\t\u76ee\u524d\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u4ea7\u751f\u6709\u4e24\u79cd\u65b9\u6848\uff0c\u4e00\u79cd\u65b9\u6848\u662f\u91c7\u7528\u76f4\u63a5\u6570\u5b57\u9891\u7387\u5408\u6210(DDS)\u6280\u672f\u4ea7\u751f\u4efb\u610f\u6ce2\u5f62\uff0c\u5de5\u4f5c\u539f\u7406\u5982\u56fe1\u6240\u793a\u3002<\/p>\n

\n\t\"\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u539f\u7406\u53ca\u786c\u4ef6\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

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\n\t\"\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u539f\u7406\u53ca\u786c\u4ef6\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

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D\/A\u8f6c\u6362\u5668\u7684\u8f93\u5165\u7aef\u76f8\u8fde\uff0cD\/A\u8f6c\u6362\u5668\u7684\u4f5c\u7528\u662f\u5c06\u4ece\u6ce2\u5f62\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u7684\u6570\u5b57\u4fe1\u53f7\u8f6c\u6362\u4e3a\u6a21\u62df\u4fe1\u53f7\uff0c\u7531\u4e8e\u6700\u9ad8\u65f6\u949f\u9891\u7387\u4e3a100 MHz\uff0c\u6240\u4ee5D\/A\u8f6c\u6362\u5668\u9009\u62e9\u901f\u7387\u4e3a125\u767e\u4e07\u6b21\/\u79d2\u7684AD975\u3002\u6839\u636e\u91c7\u6837\u5b9a\u5f8b\u8f93\u51fa\u4fe1\u53f7\u7684\u57fa\u6ce2\u9891\u7387\u5c06\u4f4e\u4e8e\u6240\u7528\u7684\u53c2\u8003\u65f6\u949f\u9891\u7387\u7684\u4e00\u534a\uff0c\u5728\u672c\u65b9\u6848\u4e2d\u91c7\u6837\u65f6\u949f\u6700\u9ad8\u9891\u7387\u4e3a100 MHz\uff0c\u4e00\u4e2a\u4efb\u610f\u6ce2\u5f62\u6700\u5c11\u53ef\u75314\u4e2a\u70b9\u6784\u6210\uff0c\u5e76\u4e14\u6bcf\u4e2a\u65f6\u949f\u5468\u671f\u8bfb\u53d6\u4e24\u4e2a\u6ce2\u5f62\u6570\u636e\uff0c\u56e0\u6b64\u6240\u8f93\u51fa\u7684\u4efb\u610f\u6ce2\u5f62\u4fe1\u53f7\u7684\u6700\u9ad8\u9891\u7387\u4e3a50 MHz\u3002\u4e0a\u8ff0\u7535\u8def\u4e2d\uff0c15\u4f4d\u540c\u6b65\u4e8c\u8fdb\u5236\u5730\u5740\u8ba1\u6570\u5668\u300124\u4f4d\u9501\u5b58\u5668\u300112\u4f4d\u5947\u5076\u6570\u636e\u9009\u62e9\u7535\u8def\u53ca\u76f8\u5173\u63a7\u5236\u7535\u8def\u4e5f\u53ef\u7531\u9ad8\u901fCPLD<\/u>\u5b9e\u73b0\u3002<\/p>\n

\n\t1.3 \u6ee4\u6ce2\u5668\u8bbe\u8ba1<\/p>\n

\n\t\u7ecf\u8fc7D\/A\u8f6c\u6362\u540e\u7684\u4fe1\u53f7\u901a\u5e38\u542b\u6709\u8f83\u591a\u7684\u65f6\u949f\u6210\u5206\u53ca\u8f83\u4e3a\u9661\u5ced\u7684\u8dc3\u53d8\u8fb9\u7f18\uff0c\u4e3a\u4e86\u51cf\u5c11\u8f93\u51fa\u6ce2\u5f62\u7684\u6296\u52a8\u3001\u6291\u5236\u9ad8\u6b21\u8c10\u6ce2\uff0c\u5728\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u8bbe\u8ba1\u4e2d\u9009\u62e9\u6709\u6548\u7684\u6ee4\u6ce2\u5668\u5c31\u663e\u5f97\u975e\u5e38\u91cd\u8981\uff0c\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u5373\u80fd\u8f93\u51fa\u6b63\u5f26\u6ce2\uff0c\u53c8\u53ef\u8f93\u51fa\u4e09\u89d2\u6ce2\u3001\u952f\u9f7f\u6ce2\u3001\u8109\u51b2\u6ce2\u4ee5\u53ca\u4efb\u610f\u6ce2\u578b\uff0c\u56e0\u6b64\u8981\u6839\u636e\u4e0d\u540c\u9891\u6bb5\u548c\u6ce2\u5f62\u6765\u9009\u62e9\u4e0d\u540c\u6027\u80fd\u7684\u6ee4\u6ce2\u5668\uff0c\u692d\u5706(EllipTI<\/u>c)\u6ee4\u6ce2\u5668\u5177\u6709\u9661\u5ced\u7684\u8fc7\u6e21\u7279\u6027\uff0c\u9002\u5408\u7528\u4f5c\u6b63\u5f26\u6ce2\u7684\u8f93\u51fa\u6ee4\u6ce2\u5668\uff0c\u4e09\u89d2\u6ce2\u3001\u952f\u9f7f\u6ce2\u548c\u4efb\u610f\u6ce2\u5177\u6709\u4e30\u5bcc\u7684\u9891\u8c31\uff0c\u56e0\u6b64\u8981\u6c42\u6ee4\u6ce2\u5668\u5728\u901a\u5e26\u8303\u56f4\u5185\u5177\u6709\u826f\u597d\u7684\u5e45\u9891\u7279\u6027\uff0c\u4ee5\u4fdd\u8bc1\u4fe1\u53f7\u901a\u8fc7\u6ee4\u6ce2\u5668\u540e\u5373\u4e0d\u4ea7\u751f\u5931\u771f\uff0c\u53c8\u80fd\u6ee4\u53bb\u6742\u6563\u4fe1\u53f7\u3002\u692d\u5706\u6ee4\u6ce2\u5668\u5bf9\u6b63\u5f26\u6ce2\u4ee5\u5916\u7684\u5176\u4ed6\u6ce2\u5f62\u4f1a\u4ea7\u751f\u5267\u70c8\u7684\u632f\u94c3\uff0c\u800c\u5177\u6709\u7ebf\u5f62\u76f8\u4f4d\u7684\u9ad8\u65af (Gaussian)\u6ee4\u6ce2\u5668\u53ef\u4ee5\u6ee1\u8db3\u8fd9\u4e9b\u8981\u6c42\uff0c\u5728\u672c\u65b9\u6848\u4e2d\u7531\u4e8e\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u91c7\u6837\u65f6\u949f\u53ef\u53d8\uff0c\u56e0\u6b64\u5b83\u7684\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u622a\u6b62\u9891\u7387\u4e5f\u5fc5\u987b\u53d8\u5316\uff0c\u5426\u5219\u5728\u6709\u4e9b\u9891\u6bb5\u5c31\u4e0d\u8d77\u6ee4\u6ce2\u4f5c\u7528\uff0c\u6216\u8005\u662f\u5728\u9ad8\u9891\u6bb5\u6709\u7528\u4fe1\u53f7\u4f1a\u88ab\u8870\u51cf\uff0c\u4e3a\u6b64\u672c\u8bbe\u8ba1\u65b9\u6848\u4e2d\u91c7\u7528\u622a\u6b62\u9891\u7387\u4e3a25 MHz\u300150 MHz\u7684\u4e03\u9636\u692d\u5706\u6ee4\u6ce2\u5668\u4ee5\u53ca\u622a\u6b62\u9891\u7387\u4e3a20 MHz\u9ad8\u65af\u6ee4\u6ce2\u5668\uff0c\u7531\u5355\u7247\u673a\u6839\u636e\u4e0d\u540c\u60c5\u51b5\u7f16\u7a0b\u9009\u62e9\u3002\u56fe5\u7ed9\u51fa\u4e86\u622a\u6b62\u9891\u7387\u4e3a50 MHz\u7684\u4e03\u9636\u692d\u5706\u6ee4\u6ce2\u5668\u4ee5\u53ca\u622a\u6b62\u9891\u7387\u4e3a20 MHz\u9ad8\u65af\u6ee4\u6ce2\u5668\u7684\u7535\u8def\u3002<\/p>\n

\n\t\"\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u539f\u7406\u53ca\u786c\u4ef6\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t1.4 GPI<\/u>B\u63a5\u53e3\u8bbe\u8ba1<\/p>\n

\n\t\u5c3d\u7ba1\u76ee\u524d\u5728\u667a\u80fd\u4eea\u5668\u4e2d\u6709\u8bb8\u591a\u65b0\u7684\u63a5\u53e3\u6807\u51c6\uff0c\u6bd4\u5982USB<\/u>\u3001LAN\u7b49\uff0c\u4f46\u662fGPIB(General Purpose Inte<\/u>RF<\/u>ace Bus)\u63a5\u53e3\u4ecd\u7136\u662f\u4e1a\u754c\u516c\u8ba4\u7684\u667a\u80fd\u4eea\u5668\u6807\u51c6\u63a5\u53e3\uff0c\u5728\u672c\u65b9\u6848\u4e2d\u91c7\u7528GPIB\u63a5\u53e3\u7531PC\u673a\u5411\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u4e0b\u8f7d\u6570\u636e\uff0c\u5e76\u53ef\u901a\u8fc7GPIB\u603b\u7ebf\u8fdc\u7a0b\u63a7\u5236\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff0cGPIB\u63a5\u53e3\u7535\u8def\u7531\u91c7\u7528NI\u516c\u53f8\u7684NAT7210 GPIB\u4e13\u7528\u96c6\u6210\u7535\u8def\u548cTI\u516c\u53f8\u751f\u4ea7\u7684GPIB\u603b\u7ebf\u9a71\u52a8\u5668SN75160\u4ee5\u53caSN75162\u6784\u6210\uff0cNAT7210\u8f93\u51fa\u7684\u662f\u6807\u51c6\u7684GPIB\u683c\u5f0f\u6570\u636e\uff0c\u7b26\u5408 IEEE488.2\u6807\u51c6\uff0cGPIB\u603b\u7ebf\u9a71\u52a8\u5668\u7684\u4f5c\u7528\u662f\u589e\u5f3a\u63a5\u53e3\u7684\u9a71\u52a8\u80fd\u529b\u3002NAT7210\u4e0eSN75160\u3001SN75161\u4ee5\u53ca\u5355\u7247\u673a\u4e4b\u95f4\u7684\u8fde\u63a5\u65b9\u6cd5\u53c2\u89c1\u6587\u732e\u3002<\/p>\n

\n\t2 \u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u8f6f\u4ef6\u8bbe\u8ba1<\/p>\n

\n\t\u9ad8\u901f\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u8f6f\u4ef6\u5305\u62ecPC\u673a\u90e8\u5206\u7684\u6ce2\u5f62\u7f16\u8f91\u53ca\u4e0b\u8f7d\u8f6f\u4ef6\u4ee5\u53ca\u4eea\u5668\u5185\u90e8\u7684\u5355\u7247\u673a\u63a7\u5236\u8f6f\u4ef6\u4e24\u90e8\u5206\uff0c\u6ce2\u5f62\u7f16\u8f91\u53ca\u4e0b\u8f7d\u8f6f\u4ef6\u5177\u5907\u5404\u79cd\u4efb\u610f\u6ce2\u5f62\u7f16\u8f91\u80fd\u529b\uff0c\u4f8b\u5982\u76f4\u7ebf\u7f16\u8f91\u65b9\u5f0f\u3001\u66f2\u7ebf\u7f16\u8f91\u65b9\u5f0f\u3001\u516c\u5f0f\u7f16\u8f91\u65b9\u5f0f\u3001\u8c03\u5236\u6ce2\u5f62\u7f16\u8f91\u65b9\u5f0f\u3002\u6ce2\u5f62\u7f16\u8f91\u53ca\u4e0b\u8f7d\u8f6f\u4ef6\u80fd\u591f\u901a\u8fc7GPIB\u63a5\u53e3\u4e0e\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u901a\u4fe1\u5b8c\u6210\u4efb\u610f\u6ce2\u5f62\u6570\u636e\u7684\u4e0b\u8f7d\u53ca\u4eea\u5668\u7684\u8fdc\u7a0b\u76d1\u63a7<\/u>\u3002\u4eea\u5668\u5185\u90e8\u7684\u5355\u7247\u673a\u63a7\u5236\u8f6f\u4ef6\u7ed3\u6784\u91c7\u7528\u7ecf\u5178\u7684\u4e3b\u7a0b\u5e8f\u5faa\u73af\u548c\u4e2d\u65ad\u670d\u52a1\u6a21\u5f0f\uff0c\u5176\u6d41\u7a0b\u56fe\u5982\u56fe6\u6240\u793a\u3002\u4eea\u5668\u52a0\u7535\u540e\uff0c\u9996\u5148\u8fdb\u884c\u81ea\u68c0\u548c\u8f6f\u3001\u786c\u4ef6\u7684\u521d\u59cb\u5316\uff0c\u518d\u8fdb\u5165\u4e3b\u7a0b\u5e8f\u7684\u5faa\u73af\uff0c\u4e3b\u7a0b\u5e8f\u7684\u5faa\u73af\u662f\u7b49\u5f85\u4e2d\u65ad\u5904\u7406\u7684\u8fc7\u7a0b\uff0c\u5b83\u4f9d\u636e\u4e2d\u65ad\u8bf7\u6c42\u5224\u65ad\u4e2d\u65ad\u6e90\uff0c\u5f00\u4e2d\u65ad\u5e76\u8f6c\u5411\u76f8\u5e94\u7684\u4e2d\u65ad\u5904\u7406\u5b50\u7a0b\u5e8f\uff0c\u5b8c\u6210\u5bf9\u5e94\u64cd\u4f5c\u6216\u786c\u4ef6\u63a7\u5236\u3002<\/p>\n

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