{"id":86687,"date":"2026-07-29T02:16:44","date_gmt":"2026-07-28T18:16:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/86687.html"},"modified":"2026-07-29T02:16:44","modified_gmt":"2026-07-28T18:16:44","slug":"%e3%80%90gnss%e3%80%91gps-p%e7%a0%81%e4%bb%bf%e7%9c%9f%e4%b8%8e%e5%ae%9e%e7%8e%b0-%e4%bb%8ec-a%e7%a0%81%e5%88%b0%e7%b2%be%e5%af%86%e6%b5%8b%e8%b7%9d%e7%a0%81%e3%80%90%e5%90%abmatlab","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/86687.html","title":{"rendered":"\u3010GNSS\u3011GPS P\u7801\u4eff\u771f\u4e0e\u5b9e\u73b0\u2014\u2014\u4eceC\/A\u7801\u5230\u7cbe\u5bc6\u6d4b\u8ddd\u7801\u3010\u542bmatlab\u4ee3\u7801\u3011"},"content":{"rendered":"

\u535a\u5ba2\u4e03：GPS P\u7801\u4eff\u771f\u4e0e\u5b9e\u73b0\u2014\u2014\u4eceC\/A\u7801\u5230\u7cbe\u5bc6\u6d4b\u8ddd\u7801<\/h3>\n

\u672c\u6587\u8bf4\u660e：\u672c\u7cfb\u5217\u535a\u5ba2\u57fa\u4e8e\u4f5c\u8005\u53d1\u8868\u4e8eIEEE\u7684\u5b66\u672f\u8bba\u6587\u2014\u2014Z. Shang, \u201cGPS C\/A code simulation analysis and GPS signal capture analysis based on MATLAB,\u201d in 2023 IEEE International Conference on Integrated Circuits and Communication Systems (ICICACS), Xi\u2019an, China, 2023, pp. 1-6. doi: 10.1109\/ICICACS57324.2023.10248505\u3002<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u5f53\u5e74\u8bba\u6587\u4e2d\u53ea\u91cd\u70b9\u8ba8\u8bba\u4e86c\/a\u7801<\/p>\n

\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981P\u7801？\u2014\u2014\u4ece\u201c\u7c97\u6355\u83b7\u201d\u5230\u201c\u7cbe\u5bc6\u6d4b\u8ddd\u201d<\/h3>\n

\u5728\u535a\u5ba2\u4e00\u4e2d，\u6211\u4eec\u8be6\u7ec6\u8ba8\u8bba\u4e86C\/A\u7801（\u7c97\u6355\u83b7\u7801）\u7684\u751f\u6210\u539f\u7406\u3002C\/A\u7801\u4f5c\u4e3a\u6c11\u7528GPS\u4fe1\u53f7\u7684\u6838\u5fc3，\u5177\u6709\u5468\u671f\u77ed（1ms）\u3001\u7ed3\u6784\u7b80\u5355\u3001\u6613\u4e8e\u6355\u83b7\u7b49\u4f18\u70b9\u3002\u4f46\u5b83\u4e5f\u6709\u660e\u663e\u7684\u5c40\u9650\u6027：<\/p>\n\n\u7279\u6027C\/A\u7801P\u7801<\/tr>\n\n\n\n\n\n\n\n
\u7801\u901f\u7387<\/td>\n1.023 MHz<\/td>\n10.23 MHz（10\u500d）<\/td>\n<\/tr>\n
\u7801\u5468\u671f<\/td>\n1 ms（1023 chips）<\/td>\n\u7ea6267\u5929（\u8d85\u957f\u5468\u671f）<\/td>\n<\/tr>\n
\u6d4b\u8ddd\u7cbe\u5ea6<\/td>\n~30\u7c73<\/td>\n~0.3\u7c73（10\u500d\u63d0\u5347）<\/td>\n<\/tr>\n
\u7528\u9014<\/td>\n\u6c11\u7528（\u7c97\u6355\u83b7）<\/td>\n\u519b\u7528\/\u9ad8\u7cbe\u5ea6（\u7cbe\u5bc6\u6d4b\u8ddd）<\/td>\n<\/tr>\n
\u52a0\u5bc6<\/td>\n\u516c\u5f00<\/td>\nP(Y)\u7801\u52a0\u5bc6（\u4ec5\u6388\u6743\u7528\u6237\u53ef\u89e3）<\/td>\n<\/tr>\n
\u9891\u8c31<\/td>\nL1\u4ec5<\/td>\nL1 + L2\u53cc\u9891<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

P\u7801\u7684\u201c\u7cbe\u5bc6\u201d\u4f53\u73b0\u5728\u4e24\u4e2a\u5c42\u9762：<\/p>\n

  • \u7801\u901f\u7387\u66f4\u9ad8（10.23MHz vs 1.023MHz）：\u7801\u7247\u5bbd\u5ea6\u4ece\u7ea6293\u7c73（C\/A\u7801）\u7f29\u5c0f\u5230\u7ea629.3\u7c73，\u6d4b\u8ddd\u7cbe\u5ea6\u63d0\u5347\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002<\/li>\n
  • \u5468\u671f\u6781\u957f（\u7ea6267\u5929）：\u8d85\u957f\u5468\u671f\u610f\u5473\u7740P\u7801\u51e0\u4e4e\u4e0d\u53ef\u80fd\u88ab\u201c\u731c\u4e2d\u201d\u6216\u4f2a\u9020，\u5177\u5907\u66f4\u5f3a\u7684\u6297\u6b3a\u9a97\u80fd\u529b\u3002<\/li>\n
  • \u53cc\u9891\u4f20\u8f93：P\u7801\u540c\u65f6\u5728L1\u548cL2\u8f7d\u6ce2\u4e0a\u4f20\u8f93，\u53ef\u901a\u8fc7\u53cc\u9891\u7ec4\u5408\u6d88\u9664\u7535\u79bb\u5c42\u5ef6\u8fdf\u8bef\u5dee\u3002<\/li>\n

    P\u7801\u88ab\u8c03\u5236\u5728L1\u8f7d\u6ce2\u7684\u540c\u76f8（I）\u652f\u8def\u4e0a，\u4e0eC\/A\u7801（\u6b63\u4ea4Q\u652f\u8def）\u5f62\u6210\u6b63\u4ea4\u590d\u7528\u3002\u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u6c11\u7528\u63a5\u6536\u673a\u53ea\u9700\u5904\u7406C\/A\u7801\u5373\u53ef\u83b7\u5f97\u5b9a\u4f4d\u670d\u52a1，\u800c\u519b\u7528\/\u6388\u6743\u63a5\u6536\u673a\u5219\u53ef\u540c\u65f6\u5229\u7528P\u7801\u5b9e\u73b0\u66f4\u9ad8\u7cbe\u5ea6\u3002<\/p>\n

    \u4e8c\u3001P\u7801\u7684\u751f\u6210\u539f\u7406：\u56db\u4e2a\u79fb\u4f4d\u5bc4\u5b58\u5668\u7684\u534f\u540c\u5de5\u4f5c<\/h3>\n

    2.1 \u4e0eC\/A\u7801\u7684\u672c\u8d28\u533a\u522b<\/h4>\n

    C\/A\u7801\u7531\u4e24\u4e2a10\u7ea7\u79fb\u4f4d\u5bc4\u5b58\u5668（G1\u548cG2）\u7ec4\u5408\u751f\u6210\u3002P\u7801\u7684\u751f\u6210\u7ed3\u6784\u5219\u590d\u6742\u5f97\u591a：<\/p>\n\nC\/A\u7801P\u7801<\/tr>\n\n\n\n\n
    \u79fb\u4f4d\u5bc4\u5b58\u5668\u6570\u91cf<\/td>\n2\u4e2a（10\u7ea7）<\/td>\n4\u4e2a（12\u7ea7）<\/td>\n<\/tr>\n
    \u53cd\u9988\u591a\u9879\u5f0f<\/td>\nG1: 1+x\u00b3+x\u00b9\u2070；G2: 1+x\u00b2+x\u00b3+x\u2076+x\u2078+x\u2079+x\u00b9\u2070<\/td>\nX1\/X2\u5404\u4e24\u7ec4，\u66f4\u590d\u6742<\/td>\n<\/tr>\n
    \u8f93\u51fa\u7ec4\u5408<\/td>\nG1[10] \u2295 G2[tap1] \u2295 G2[tap2]<\/td>\nX1A \u2295 X1B \u4e0e X2A \u2295 X2B \u518d\u7ec4\u5408<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    P\u7801\u7531\u4e24\u4e2a12\u7ea7\u7684M\u5e8f\u5217\u53d1\u751f\u5668\u7ec4\u5408\u800c\u6210：<\/p>\n

    P(t)=PN1(t)\u2295PN2(t)P(t) = PN1(t) \\\\oplus PN2(t)<\/span><\/span>P<\/span>(<\/span>t<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>P<\/span>N<\/span>1<\/span>(<\/span>t<\/span>)<\/span><\/span>\u2295<\/span><\/span><\/span><\/span>P<\/span>N<\/span>2<\/span>(<\/span>t<\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \u5176\u4e2dPN1\u548cPN2\u5404\u81ea\u53c8\u7531\u4e24\u4e2a\u5b50\u5e8f\u5217\u7ec4\u5408\u800c\u6210，\u5f62\u6210\u56db\u5bc4\u5b58\u5668\u7ed3\u6784\u3002<\/p>\n

    2.2 \u56db\u5bc4\u5b58\u5668\u7ed3\u6784\u8be6\u89e3<\/h4>\n

    P\u7801\u751f\u6210\u5668\u7531\u56db\u4e2a12\u4f4d\u79fb\u4f4d\u5bc4\u5b58\u5668\u7ec4\u6210：<\/p>\n

    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 P\u7801\u751f\u6210\u5668\u67b6\u6784 \u2502
    \n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
    \n\u2502 \u2502
    \n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u2502
    \n\u2502 \u2502 X1A\u5bc4\u5b58\u5668 \u2502 \u2502 X1B\u5bc4\u5b58\u5668 \u2502 \u2502
    \n\u2502 \u2502 (12\u7ea7) \u2502 \u2502 (12\u7ea7) \u2502 \u2502
    \n\u2502 \u2502 \u53cd\u9988: 14501 \u2502 \u2502 \u53cd\u9988: 14501 \u2502 \u2502
    \n\u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2502
    \n\u2502 \u2502 \u2502 \u2502
    \n\u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2502
    \n\u2502 \u2193 \u2502
    \n\u2502 PN1(t) = X1A \u2295 X1B \u2502
    \n\u2502 \u2193 \u2502
    \n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u2502
    \n\u2502 \u2193 \u2193 \u2502
    \n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u2502
    \n\u2502 \u2502 X2A\u5bc4\u5b58\u5668 \u2502 \u2502 X2B\u5bc4\u5b58\u5668 \u2502 \u2502
    \n\u2502 \u2502 (12\u7ea7) \u2502 \u2502 (12\u7ea7) \u2502 \u2502
    \n\u2502 \u2502 \u53cd\u9988: 17147 \u2502 \u2502 \u53cd\u9988: 17147 \u2502 \u2502
    \n\u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2502
    \n\u2502 \u2502 \u2502 \u2502
    \n\u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2502
    \n\u2502 \u2193 \u2502
    \n\u2502 PN2(t) = X2A \u2295 X2B \u2502
    \n\u2502 \u2193 \u2502
    \n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u2502
    \n\u2502 \u2193 \u2193 \u2502
    \n\u2502 P(t) = PN1(t) \u2295 PN2(t + \u5ef6\u65f6) \u2502
    \n\u2502 \u2502
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

    \u5173\u952e\u53c2\u6570：<\/p>\n\n\u5bc4\u5b58\u5668\u7ea7\u6570\u53cd\u9988\u591a\u9879\u5f0f（\u516b\u8fdb\u5236）\u5468\u671f<\/tr>\n\n\n\n\n\n
    X1A<\/td>\n12<\/td>\n14501<\/td>\n4092 chips（\u77ed\u5468\u671f）<\/td>\n<\/tr>\n
    X1B<\/td>\n12<\/td>\n14501<\/td>\n4092 chips（\u77ed\u5468\u671f）<\/td>\n<\/tr>\n
    X2A<\/td>\n12<\/td>\n17147<\/td>\n4092 chips（\u77ed\u5468\u671f）<\/td>\n<\/tr>\n
    X2B<\/td>\n12<\/td>\n17147<\/td>\n4092 chips（\u77ed\u5468\u671f）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u4e3a\u4ec0\u4e48\u662f4092 chips？<\/p>\n

    12\u7ea7\u79fb\u4f4d\u5bc4\u5b58\u5668\u7684\u5b8c\u6574\u5468\u671f\u672c\u5e94\u4e3a 212\u22121=40952^{12} – 1 = 4095<\/span><\/span>2<\/span><\/span>12<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2212<\/span><\/span><\/span><\/span>1<\/span><\/span>=<\/span><\/span><\/span><\/span>4095<\/span><\/span><\/span><\/span><\/span>\u3002\u4f46X1A\u548cX2A\u88ab\u8bbe\u8ba1\u4e3a\u77ed\u5468\u671f（shortcycled）\u52304092 chips\u3002\u8fd9\u4e00\u8bbe\u8ba1\u4f7f\u5f97PN1\u548cPN2\u7684\u5468\u671f\u4e3a：<\/p>\n

    TPN1=4092\u00d73750=15,345,000\u00a0chips\u22481.5\u00a0\u79d2T_{PN1} = 4092 \\\\times 3750 = 15,345,000 \\\\text{ chips} \\\\approx 1.5 \\\\text{ \u79d2}<\/span><\/span>T<\/span><\/span>P<\/span>N<\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>4092<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>3750<\/span><\/span>=<\/span><\/span><\/span><\/span>15<\/span>,<\/span><\/span>345<\/span>,<\/span><\/span>000<\/span>\u00a0chips<\/span><\/span><\/span>\u2248<\/span><\/span><\/span><\/span>1.5<\/span>\u00a0<\/span>\u79d2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    X1A\u548cX2A\u5404\u8fd0\u884c3750\u6b21\u77ed\u5468\u671f，\u8986\u76d61.5\u79d2\u3002PN1\u548cPN2\u518d\u7ec4\u5408，\u6700\u7ec8\u5f62\u6210\u5468\u671f\u7ea6267\u5929\u7684\u8d85\u957fP\u7801\u5e8f\u5217\u3002<\/p>\n

    2.3 P\u7801\u7684\u76f8\u4f4d\u5206\u914d<\/h4>\n

    \u4e0eC\/A\u7801\u7c7b\u4f3c，\u4e0d\u540c\u536b\u661f\u7684P\u7801\u901a\u8fc7\u4e0d\u540c\u7684\u65f6\u95f4\u5ef6\u8fdf\u6765\u533a\u5206\u3002GPS ICD\u6587\u6863\u4e2d\u5b9a\u4e49\u4e86C\/A\u7801\u4e0eP\u7801\u7684\u914d\u5bf9\u76f8\u4f4d\u5206\u914d\u8868\u3002<\/p>\n\nPRNC\/A G2\u5ef6\u65f6(chips)C\/A\u521d\u503c(\u516b\u8fdb\u5236)C\/A\u524d10\u7801\u7247X2\u5ef6\u65f6(chips)P\u7801\u76f8\u5bf9\u8d85\u524dP\u7801\u524d12\u7801\u7247<\/tr>\n\n\n\n\n\n
    64<\/td>\n729<\/td>\n0254<\/td>\n1523<\/td>\n27<\/td>\nP27(t+24)<\/td>\n5112<\/td>\n<\/tr>\n
    65<\/td>\n695<\/td>\n1602<\/td>\n0175<\/td>\n28<\/td>\nP28(t+24)<\/td>\n0667<\/td>\n<\/tr>\n
    66<\/td>\n780<\/td>\n1160<\/td>\n0617<\/td>\n29<\/td>\nP29(t+24)<\/td>\n2111<\/td>\n<\/tr>\n
    \u2026<\/td>\n\u2026<\/td>\n\u2026<\/td>\n\u2026<\/td>\n\u2026<\/td>\n\u2026<\/td>\n\u2026<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u5173\u952e\u4e8b\u5b9e：C\/A\u7801\u4e0eP\u7801\u7684\u76f8\u4f4d\u5206\u914d\u662f\u4e0d\u53ef\u5206\u5272\u7684\u914d\u5bf9\u2014\u2014\u6bcf\u9897\u536b\u661f\u7684C\/A\u7801\u76f8\u4f4d\u548cP\u7801\u76f8\u4f4d\u7531ICD\u6587\u6863\u5171\u540c\u5b9a\u4e49，\u4e0d\u80fd\u72ec\u7acb\u9009\u62e9\u3002<\/p>\n

    2.4 \u4e3a\u4ec0\u4e48P\u7801\u5982\u6b64\u96be\u4ee5\u751f\u6210？<\/h4>\n

    \u4e0eC\/A\u7801\u76f8\u6bd4，P\u7801\u7684\u751f\u6210\u9762\u4e34\u51e0\u4e2a\u6838\u5fc3\u6311\u6218：<\/p>\n\n\u6311\u6218\u8bf4\u660e<\/tr>\n\n\n\n\n\n
    \u72b6\u6001\u521d\u59cb\u5316\u590d\u6742<\/td>\n\u9700\u8981\u6839\u636eGPS\u5468\u6570\u548c\u5468\u5185\u65f6（TOW） \u8ba1\u7b97\u56db\u4e2a\u5bc4\u5b58\u5668\u7684\u521d\u59cb\u72b6\u6001<\/td>\n<\/tr>\n
    \u77ed\u5468\u671f\u622a\u65ad<\/td>\nX1A\/X2A\u9700\u8981\u6bcf4092 chips\u91cd\u7f6e\u4e00\u6b21，\u800c\u975e\u81ea\u7136\u6ea2\u51fa<\/td>\n<\/tr>\n
    \u8d85\u957f\u5e8f\u5217<\/td>\n\u5b8c\u6574P\u7801\u5468\u671f\u7ea6267\u5929，\u65e0\u6cd5\u4e00\u6b21\u6027\u751f\u6210\u5168\u90e8\u5e8f\u5217<\/td>\n<\/tr>\n
    \u76f8\u4f4d\u5206\u914d\u8868\u5e9e\u5927<\/td>\n\u9700\u67e5\u8868\u786e\u5b9a\u6bcf\u9897\u536b\u661f\u7684\u7cbe\u786e\u5ef6\u65f6\u53c2\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u4e09\u3001MATLAB\u4eff\u771f\u5b9e\u73b0<\/h3>\n

    3.1 \u8bbe\u8ba1\u601d\u8def<\/h4>\n

    \u7531\u4e8eP\u7801\u7684\u5b8c\u6574\u5468\u671f\u6781\u957f（267\u5929），\u4eff\u771f\u65f6\u901a\u5e38\u91c7\u7528\u6309\u9700\u751f\u6210\u7b56\u7565：<\/p>\n

  • \u6839\u636e\u76ee\u6807\u536b\u661f\u7684PRN\u53f7，\u67e5\u8868\u83b7\u53d6P\u7801\u5ef6\u65f6\u53c2\u6570<\/li>\n
  • \u6839\u636e\u6307\u5b9a\u7684GPS\u65f6\u95f4，\u8ba1\u7b97\u56db\u4e2a\u5bc4\u5b58\u5668\u7684\u521d\u59cb\u72b6\u6001<\/li>\n
  • \u751f\u6210\u672c\u5730P\u7801\u5e8f\u5217（\u901a\u5e38\u4e3a1ms\u6216\u66f4\u77ed，\u7528\u4e8e\u76f8\u5173\u8fd0\u7b97）<\/li>\n

    3.2 \u6838\u5fc3\u6570\u636e\u7ed3\u6784<\/h4>\n

    % P\u7801\u76f8\u4f4d\u5206\u914d\u8868（\u90e8\u5206，\u5b8c\u6574\u8868\u89c1IS-GPS-200）<\/span>
    \n% \u6bcf\u884c: [PRN, X2_Delay, P_Relative_Advance]<\/span>
    \npCodePhaseTable =<\/span> [<\/span>
    \n 1<\/span>,<\/span> 5<\/span>,<\/span> 0<\/span>;<\/span> % PRN 1: X2\u5ef6\u65f65 chips<\/span>
    \n 2<\/span>,<\/span> 6<\/span>,<\/span> 0<\/span>;<\/span> % PRN 2: X2\u5ef6\u65f66 chips<\/span>
    \n % … \u5b8c\u6574\u8868\u517132+ entries<\/span>
    \n]<\/span>;<\/span><\/p>\n

    3.3 12\u7ea7\u79fb\u4f4d\u5bc4\u5b58\u5668\u6838\u5fc3\u51fd\u6570<\/h4>\n

    function<\/span> [<\/span>seq,<\/span> state]<\/span> =<\/span> lfsr12<\/span>(<\/span>init_state,<\/span> feedback,<\/span> num_chips,<\/span> reset_after)<\/span>
    \n % 12\u7ea7\u7ebf\u6027\u53cd\u9988\u79fb\u4f4d\u5bc4\u5b58\u5668<\/span>
    \n % \u8f93\u5165: init_state – 12\u4f4d\u521d\u59cb\u72b6\u6001 (1\u00d712, 0\/1)<\/span>
    \n % feedback – \u53cd\u9988\u591a\u9879\u5f0f（\u516b\u8fdb\u5236\u8868\u793a）<\/span>
    \n % num_chips – \u9700\u8981\u751f\u6210\u7684\u7801\u7247\u6570<\/span>
    \n % reset_after – \u6bcf\u591a\u5c11chip\u91cd\u7f6e\u4e00\u6b21（\u77ed\u5468\u671f）<\/span>
    \n % \u8f93\u51fa: seq – \u751f\u6210\u7684\u7801\u5e8f\u5217<\/span><\/p>\n

    state =<\/span> init_state;<\/span>
    \n seq =<\/span> zeros<\/span>(<\/span>1<\/span>,<\/span> num_chips)<\/span>;<\/span><\/p>\n

    % \u5c06\u516b\u8fdb\u5236\u53cd\u9988\u591a\u9879\u5f0f\u8f6c\u6362\u4e3a\u62bd\u5934\u4f4d\u7f6e<\/span>
    \n taps =<\/span> octalToTaps<\/span>(<\/span>feedback)<\/span>;<\/span> % \u4f8b\u5982 14501 \u2192 [1, 3, 5, 10, 12]<\/span><\/p>\n

    for<\/span> i<\/span> =<\/span> 1<\/span>:<\/span>num_chips
    \n % \u8f93\u51fa\u6700\u540e\u4e00\u7ea7<\/span>
    \n seq<\/span>(<\/span>i<\/span>)<\/span> =<\/span> state<\/span>(<\/span>end<\/span>)<\/span>;<\/span><\/p>\n

    % \u8ba1\u7b97\u53cd\u9988（\u5404\u62bd\u5934\u7684\u5f02\u6216）<\/span>
    \n fb =<\/span> 0<\/span>;<\/span>
    \n for<\/span> t =<\/span> taps
    \n fb =<\/span> xor<\/span>(<\/span>fb,<\/span> state<\/span>(<\/span>t)<\/span>)<\/span>;<\/span>
    \n end<\/span><\/p>\n

    % \u79fb\u4f4d<\/span>
    \n state =<\/span> [<\/span>fb,<\/span> state<\/span>(<\/span>1<\/span>:<\/span>end<\/span>–<\/span>1<\/span>)<\/span>]<\/span>;<\/span><\/p>\n

    % \u77ed\u5468\u671f\u91cd\u7f6e（\u5982\u9700\u8981）<\/span>
    \n if<\/span> reset_after ><\/span> 0<\/span> &&<\/span> mod<\/span>(<\/span>i<\/span>,<\/span> reset_after)<\/span> ==<\/span> 0<\/span>
    \n state =<\/span> init_state;<\/span>
    \n end<\/span>
    \n end<\/span>
    \nend<\/span><\/p>\n

    3.4 \u4e3b\u751f\u6210\u51fd\u6570\u7ed3\u6784<\/h4>\n

    function<\/span> pCode =<\/span> generatePCode<\/span>(<\/span>prn,<\/span> gps_week,<\/span> tow_ms,<\/span> num_chips)<\/span>
    \n % \u751f\u6210\u6307\u5b9a\u536b\u661f\u5728\u6307\u5b9a\u65f6\u523b\u7684P\u7801<\/span>
    \n % \u8f93\u5165: prn – \u536b\u661f\u53f7 (1-32)<\/span>
    \n % gps_week – GPS\u5468\u6570<\/span>
    \n % tow_ms – \u5468\u5185\u65f6（\u6beb\u79d2）<\/span>
    \n % num_chips – \u9700\u8981\u751f\u6210\u7684\u7801\u7247\u6570<\/span>
    \n % \u8f93\u51fa: pCode – P\u7801\u5e8f\u5217 (+1\/-1)<\/span><\/p>\n

    % 1. \u67e5\u8868\u83b7\u53d6\u8be5PRN\u7684P\u7801\u53c2\u6570<\/span>
    \n [<\/span>x2_delay,<\/span> p_advance]<\/span> =<\/span> getPCodeParams<\/span>(<\/span>prn)<\/span>;<\/span><\/p>\n

    % 2. \u8ba1\u7b97\u56db\u4e2a\u5bc4\u5b58\u5668\u7684\u521d\u59cb\u72b6\u6001<\/span>
    \n % (\u57fa\u4e8eGPS\u65f6\u95f4\u548cPRN\u53c2\u6570\u7684\u590d\u6742\u8ba1\u7b97)<\/span>
    \n [<\/span>init_X1A,<\/span> init_X1B,<\/span> init_X2A,<\/span> init_X2B]<\/span> =<\/span> …<\/span>
    \n computeInitialStates<\/span>(<\/span>gps_week,<\/span> tow_ms,<\/span> prn,<\/span> x2_delay)<\/span>;<\/span><\/p>\n

    % 3. \u751f\u6210PN1\u5e8f\u5217<\/span>
    \n pn1 =<\/span> lfsr12<\/span>(<\/span>init_X1A,<\/span> 14501<\/span>,<\/span> num_chips,<\/span> 4092<\/span>)<\/span> …<\/span>
    \n xor lfsr12<\/span>(<\/span>init_X1B,<\/span> 14501<\/span>,<\/span> num_chips,<\/span> 4092<\/span>)<\/span>;<\/span><\/p>\n

    % 4. \u751f\u6210PN2\u5e8f\u5217（\u542b\u5ef6\u65f6）<\/span>
    \n pn2_delayed =<\/span> lfsr12<\/span>(<\/span>init_X2A,<\/span> 17147<\/span>,<\/span> num_chips +<\/span> x2_delay,<\/span> 4092<\/span>)<\/span> …<\/span>
    \n xor lfsr12<\/span>(<\/span>init_X2B,<\/span> 17147<\/span>,<\/span> num_chips +<\/span> x2_delay,<\/span> 4092<\/span>)<\/span>;<\/span>
    \n pn2 =<\/span> pn2_delayed<\/span>(<\/span>x2_delay +<\/span> 1<\/span> :<\/span> end<\/span>)<\/span>;<\/span><\/p>\n

    % 5. \u7ec4\u5408\u4e3aP\u7801<\/span>
    \n pCode_binary =<\/span> xor<\/span>(<\/span>pn1,<\/span> pn2)<\/span>;<\/span><\/p>\n

    % 6. \u6620\u5c04\u4e3a +1\/-1<\/span>
    \n pCode =<\/span> 2<\/span> *<\/span> pCode_binary –<\/span> 1<\/span>;<\/span> % 0\u2192-1, 1\u2192+1<\/span>
    \nend<\/span><\/p>\n

    3.5 \u4e00\u4e2a\u91cd\u8981\u7684\u5de5\u7a0b\u63d0\u9192<\/h4>\n

    MATLAB\u4eceR2021b\u5f00\u59cb\u63d0\u4f9b\u4e86\u5b98\u65b9\u7684 gpsPCode \u51fd\u6570，\u53ef\u76f4\u63a5\u751f\u6210GPS\u536b\u661f\u7684P\u7801：<\/p>\n

    % MATLAB\u5b98\u65b9\u51fd\u6570（R2021b+）<\/span>
    \npCode =<\/span> gpsPCode<\/span>(<\/span>prn,<\/span> 'NumChips'<\/span>,<\/span> 10230<\/span>,<\/span> 'SampleRate'<\/span>,<\/span> 10.23e6<\/span>)<\/span>;<\/span><\/p>\n

    \u5728\u5b66\u672f\u7814\u7a76\u548c\u6559\u5b66\u573a\u666f\u4e2d，\u5efa\u8bae\u5148\u72ec\u7acb\u5b9e\u73b0\u751f\u6210\u7b97\u6cd5\u4ee5\u7406\u89e3\u539f\u7406，\u518d\u8003\u8651\u4f7f\u7528\u5b98\u65b9\u5de5\u5177\u51fd\u6570\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n

    \u56db\u3001\u4eff\u771f\u9a8c\u8bc1\u4e0e\u5206\u6790<\/h3>\n

    4.1 P\u7801\u7684\u65f6\u57df\u7279\u5f81<\/h4>\n

    \u4e0eC\/A\u7801\u4e00\u6837，P\u7801\u4e5f\u662f\u00b11\u7684\u4f2a\u968f\u673a\u5e8f\u5217\u3002\u4f46\u7531\u4e8e\u7801\u901f\u7387\u662fC\/A\u7801\u768410\u500d（10.23MHz），P\u7801\u7684\u7801\u7247\u5bbd\u5ea6\u4ec5\u4e3aC\/A\u7801\u76841\/10：<\/p>\n

    C\/A\u7801: |\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e|___|\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e\u203e|___| (1 chip \u2248 293m)
    \nP\u7801: |\u203e\u203e|__|\u203e\u203e|__|\u203e\u203e|__|\u203e\u203e|__|\u203e\u203e|__| (1 chip \u2248 29.3m)<\/p>\n

    \u66f4\u7a84\u7684\u7801\u7247\u5bbd\u5ea6\u610f\u5473\u7740\u66f4\u9ad8\u7684\u6d4b\u8ddd\u5206\u8fa8\u7387，\u8fd9\u662fP\u7801\u201c\u7cbe\u5bc6\u201d\u4e8c\u5b57\u7684\u7269\u7406\u57fa\u7840\u3002<\/p>\n

    4.2 \u81ea\u76f8\u5173\u4e0e\u4e92\u76f8\u5173\u7279\u6027<\/h4>\n

    P\u7801\u7684\u81ea\u76f8\u5173\/\u4e92\u76f8\u5173\u7279\u6027\u4e0eC\/A\u7801\u7c7b\u4f3c\u2014\u2014\u5c16\u9510\u7684\u81ea\u76f8\u5173\u5cf0\u548c\u4f4e\u4e92\u76f8\u5173\u3002\u4f46\u7531\u4e8eP\u7801\u5468\u671f\u6781\u957f，\u5176\u4e92\u76f8\u5173\u6027\u80fd\u66f4\u4e3a\u4f18\u8d8a：<\/p>\n\n\u7279\u6027C\/A\u7801P\u7801<\/tr>\n\n\n\n\n
    \u81ea\u76f8\u5173\u5cf0\/\u65c1\u74e3\u6bd4<\/td>\n~1023:1<\/td>\n~\u975e\u5e38\u4f18\u826f<\/td>\n<\/tr>\n
    \u4e92\u76f8\u5173\u6c34\u5e73<\/td>\n\u8f83\u4f4e<\/td>\n\u66f4\u4f4e（\u957f\u5468\u671f\u4f18\u52bf）<\/td>\n<\/tr>\n
    \u6297\u591a\u5740\u5e72\u6270<\/td>\n\u826f\u597d<\/td>\n\u4f18\u5f02<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    4.3 P\u7801\u4e0eC\/A\u7801\u7684\u9891\u8c31\u5bf9\u6bd4<\/h4>\n

    \u7531\u4e8e\u7801\u901f\u7387\u76f8\u5dee10\u500d，\u4e24\u8005\u7684\u9891\u8c31\u4e3b\u74e3\u5bbd\u5ea6\u5dee\u5f02\u663e\u8457：<\/p>\n

    \u529f\u7387\u8c31\u5bc6\u5ea6
    \n \u2191
    \n \u2502 C\/A\u7801 (1.023 MHz) P\u7801 (10.23 MHz)
    \n \u2502 \u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2502 \u2588\u2588\u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2502 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2502 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2502 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2502 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588 \u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588
    \n \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 \u9891\u7387
    \n 0 1 2 3 4 5 6 7 8 9 10 (MHz)<\/p>\n

    P\u7801\u7684\u4e3b\u74e3\u5bbd\u5ea6\u7ea6\u4e3aC\/A\u7801\u768410\u500d\u3002\u66f4\u5bbd\u7684\u9891\u8c31\u610f\u5473\u7740：<\/p>\n

      \n
    • \u66f4\u5f3a\u7684\u6297\u7a84\u5e26\u5e72\u6270\u80fd\u529b<\/li>\n
    • \u66f4\u9ad8\u7684\u5904\u7406\u589e\u76ca（10log\u206110(10.23\u00d7106)\u22487010\\\\log_{10}(10.23 \\\\times 10^6) \\\\approx 70<\/span><\/span>10<\/span><\/span>log<\/span><\/span><\/span>10<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>10.23<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>6<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span>\u2248<\/span><\/span><\/span><\/span>70<\/span><\/span><\/span><\/span><\/span> dB，\u8fdc\u8d85C\/A\u7801\u7684\u7ea643dB）<\/li>\n<\/ul>\n

      \u4e94\u3001P\u7801\u4eff\u771f\u4e2d\u7684\u5e38\u89c1\u95ee\u9898<\/h3>\n

      5.1 \u5173\u4e8e\u201cP(Y)\u7801\u201d\u7684\u8bf4\u660e<\/h4>\n

      \u4e25\u683c\u6765\u8bf4，GPS\u519b\u7528\u7684\u52a0\u5bc6\u7801\u79f0\u4e3aP(Y)\u7801\u2014\u2014\u5373P\u7801\u7ecf\u8fc7\u52a0\u5bc6\u540e\u7684\u7248\u672c\u3002\u666e\u901aP\u7801（\u672a\u52a0\u5bc6）\u5728\u7406\u8bba\u4e0a\u662f\u53ef\u4ee5\u751f\u6210\u7684，\u4f46\u5b9e\u9645\u5728\u8f68\u536b\u661f\u53d1\u5c04\u7684\u662fP(Y)\u7801，\u6ca1\u6709\u89e3\u5bc6\u5bc6\u94a5\u5c31\u65e0\u6cd5\u4f7f\u7528\u3002<\/p>\n

      5.2 \u72b6\u6001\u521d\u59cb\u5316<\/h4>\n

      P\u7801\u751f\u6210\u4e2d\u6700\u590d\u6742\u7684\u90e8\u5206\u662f\u56db\u4e2a\u5bc4\u5b58\u5668\u7684\u521d\u59cb\u72b6\u6001\u8ba1\u7b97\u3002\u8fd9\u9700\u8981：<\/p>\n

        \n
      • \u7cbe\u786e\u7684GPS\u65f6\u95f4（\u5468\u6570 + \u5468\u5185\u79d2）<\/li>\n
      • \u6b63\u786e\u7684PRN\u5bf9\u5e94\u7684\u5ef6\u65f6\u53c2\u6570<\/li>\n
      • \u77ed\u5468\u671f（4092 chips）\u7684\u7cbe\u786e\u63a7\u5236<\/li>\n<\/ul>\n

        5.3 \u5b58\u50a8\u4e0e\u8ba1\u7b97<\/h4>\n

        P\u7801\u7684\u5b8c\u6574\u5468\u671f\u7ea6267\u5929，\u57281.023MHz\u7801\u901f\u7387\u4e0b\u76f8\u5f53\u4e8e\u7ea6 2.35\u00d710142.35 \\\\times 10^{14}<\/span><\/span>2.35<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>14<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e2a\u7801\u7247\u3002\u5207\u52ff\u5c1d\u8bd5\u4e00\u6b21\u6027\u751f\u6210\u5b8c\u6574\u7684P\u7801\u5e8f\u5217\u2014\u2014\u8fd9\u4e0d\u4ec5\u4e0d\u73b0\u5b9e，\u4e5f\u5b8c\u5168\u6ca1\u6709\u5fc5\u8981\u3002\u5b9e\u9645\u5e94\u7528\u4e2d\u53ea\u9700\u751f\u6210\u6240\u9700\u65f6\u957f\u7684\u5c40\u90e8\u5e8f\u5217\u5373\u53ef\u3002<\/p>\n

        \u516d\u3001\u603b\u7ed3\u4e0e\u7cfb\u5217\u5173\u8054<\/h3>\n

        \u672c\u7bc7\u6838\u5fc3\u6536\u83b7<\/h4>\n\n\u5e8f\u53f7\u5185\u5bb9\u72b6\u6001<\/tr>\n\n\n\n\n\n\n
        1<\/td>\n\u7406\u89e3P\u7801\u4e0eC\/A\u7801\u7684\u672c\u8d28\u533a\u522b（\u901f\u7387\u3001\u5468\u671f\u3001\u7cbe\u5ea6）<\/td>\n\u2705<\/td>\n<\/tr>\n
        2<\/td>\n\u638c\u63e1P\u7801\u7684\u56db\u5bc4\u5b58\u5668\u751f\u6210\u7ed3\u6784<\/td>\n\u2705<\/td>\n<\/tr>\n
        3<\/td>\n\u7406\u89e3\u77ed\u5468\u671f（4092 chips）\u7684\u8bbe\u8ba1\u610f\u56fe<\/td>\n\u2705<\/td>\n<\/tr>\n
        4<\/td>\n\u4e86\u89e3P\u7801\u76f8\u4f4d\u5206\u914d\u4e0eC\/A\u7801\u7684\u914d\u5bf9\u5173\u7cfb<\/td>\n\u2705<\/td>\n<\/tr>\n
        5<\/td>\n\u638c\u63e1P\u7801MATLAB\u4eff\u771f\u7684\u6838\u5fc3\u601d\u8def<\/td>\n\u2705<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u4e0e\u7cfb\u5217\u535a\u5ba2\u7684\u5173\u8054<\/h4>\n\n\u535a\u5ba2\u4e3b\u9898\u4e0eP\u7801\u7684\u5173\u7cfb<\/tr>\n\n\n\n\n\n
        \u535a\u5ba2\u4e00<\/td>\nC\/A\u7801\u751f\u6210<\/td>\n\u540c\u4e3a\u6d4b\u8ddd\u7801，\u7ed3\u6784\u66f4\u7b80\u5355（2\u5bc4\u5b58\u5668 vs 4\u5bc4\u5b58\u5668）<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e8c<\/td>\n\u4e2d\u9891\u4fe1\u53f7\u6a21\u62df<\/td>\nP\u7801\u540c\u6837\u53ef\u4ee5BPSK\u8c03\u5236\u5230\u4e2d\u9891\u8f7d\u6ce2<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e09<\/td>\n\u5e76\u884c\u6355\u83b7\u7b97\u6cd5<\/td>\nP\u7801\u6355\u83b7\u96be\u5ea6\u66f4\u9ad8（\u5468\u671f\u957f\u3001\u7801\u901f\u7387\u9ad8）<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e03<\/td>\nP\u7801\u4eff\u771f<\/td>\n\u7cbe\u5bc6\u6d4b\u8ddd\u7801\u7684\u751f\u6210\u539f\u7406\u4e0e\u5b9e\u73b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u7cfb\u5217\u535a\u5ba2\u5b8c\u6574\u76ee\u5f55<\/h4>\n\n\u5e8f\u53f7\u6807\u9898\u6838\u5fc3\u4e3b\u9898<\/tr>\n\n\n\n\n\n\n\n\n\n
        \u535a\u5ba2\u4e00<\/td>\nC\/A\u7801\u751f\u6210\u539f\u7406\u4e0e\u9a8c\u8bc1<\/td>\n\u79fb\u4f4d\u5bc4\u5b58\u5668\u3001Gold\u7801<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e8c<\/td>\n\u4e2d\u9891\u4fe1\u53f7\u6a21\u62df\u4e0e\u6ee4\u6ce2<\/td>\nBPSK\u8c03\u5236\u3001AWGN\u3001\u7a84\u5e26\u6ee4\u6ce2<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e09<\/td>\n\u5e76\u884c\u7801\u76f8\u4f4d\u6355\u83b7\u7b97\u6cd5<\/td>\nFFT\u76f8\u5173\u3001\u591a\u666e\u52d2\u641c\u7d22<\/td>\n<\/tr>\n
        \u535a\u5ba2\u56db<\/td>\n\u771f\u5b9e\u4fe1\u53f7\u6355\u83b7\u5b9e\u6218<\/td>\n\u6570\u636e\u5904\u7406\u3001\u536b\u661f\u5ef6\u8fdf<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e94<\/td>\n\u4ece\u6355\u83b7\u5230\u8ddf\u8e2a<\/td>\nCostas\u73af\u3001DLL<\/td>\n<\/tr>\n
        \u95f4\u7ae0<\/td>\n\u4ece\u4f4e\u901a\u6ee4\u6ce2\u5230\u5361\u5c14\u66fc\u6ee4\u6ce2<\/td>\n\u4fe1\u53f7\u5904\u7406\u8303\u5f0f\u5bf9\u6bd4<\/td>\n<\/tr>\n
        \u535a\u5ba2\u516d<\/td>\n\u4ece\u8ddf\u8e2a\u5230PVT\u89e3\u7b97<\/td>\n\u6bd4\u7279\u540c\u6b65\u3001\u661f\u5386\u3001\u5b9a\u4f4d<\/td>\n<\/tr>\n
        \u535a\u5ba2\u4e03<\/td>\nP\u7801\u4eff\u771f\u4e0e\u5b9e\u73b0<\/td>\n\u7cbe\u5bc6\u6d4b\u8ddd\u7801\u3001\u56db\u5bc4\u5b58\u5668\u7ed3\u6784<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n

        \u5f15\u7528\u672c\u6587：\u672c\u7cfb\u5217\u535a\u5ba2\u4ecb\u7ecd\u7684GPS C\/A\u7801\u4e0eP\u7801\u751f\u6210\u3001\u4fe1\u53f7\u6a21\u62df\u3001\u6355\u83b7\u3001\u8ddf\u8e2a\u4e0ePVT\u89e3\u7b97\u7b97\u6cd5，\u57fa\u4e8e\u4f5c\u8005\u53d1\u8868\u4e8eIEEE\u7684\u5b66\u672f\u8bba\u6587\u2014\u2014Z. Shang, \u201cGPS C\/A code simulation analysis and GPS signal capture analysis based on MATLAB,\u201d in 2023 IEEE International Conference on Integrated Circuits and Communication Systems (ICICACS), Xi\u2019an, China, 2023, pp. 1-6. doi: 10.1109\/ICICACS57324.2023.10248505\u3002<\/p>\n

        \n

        （\u535a\u5ba2\u4e03 \u5b8c）<\/p>\n","protected":false},"excerpt":{"rendered":"

        \u535a\u5ba2\u4e03：GPS P\u7801\u4eff\u771f\u4e0e\u5b9e\u73b0\u2014\u2014\u4eceC\/A\u7801\u5230\u7cbe\u5bc6\u6d4b\u8ddd\u7801\u672c\u6587\u8bf4\u660e：\u672c\u7cfb\u5217\u535a\u5ba2\u57fa\u4e8e\u4f5c\u8005\u53d1\u8868\u4e8eIEEE\u7684\u5b66\u672f\u8bba\u6587\u2014\u2014Z. 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