下面是调试模组用串口监控到的数据：
无卫星状态：
$GPGGA,000355.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*44 $GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,1,1,00*79
$GPRMC,000355.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*79 $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000356.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*47 $GPRMC,000356.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7A $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000357.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*46 $GPRMC,000357.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7B $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000358.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*49 $GPRMC,000358.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*74 $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000359.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*48 $GPRMC,000359.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*75 $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000400.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*43 $GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,1,1,00*79
$GPRMC,000400.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7E $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000401.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*42 $GPRMC,000401.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7F $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000402.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*41 $GPRMC,000402.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7C $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000403.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*40 $GPRMC,000403.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7D $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000404.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*47 $GPRMC,000404.026,V,8960.0000,N,00000.0000,E,0.00,0.00,060180,,,N*7A $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32
$GPGGA,000405.026,8960.0000,N,00000.0000,E,0,0,,137.0,M,13.0,M,,*46 $GPGSA,A,1,,,,,,,,,,,,,,,*1E
有卫星状态：
$GPGGA,090113.000,3958.2847,N,11616.6454,E,1,8,1.00,67.6,M,-6.7,M,,*7 8
$GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090114.000,3958.2847,N,11616.6456,E,1,8,1.00,67.7,M,-6.7,M,,*7 C
$GPRMC,090114.000,A,3958.2847,N,11616.6456,E,0.00,0.00,080110,,,A*65 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090115.000,3958.2846,N,11616.6456,E,1,8,1.00,67.7,M,-6.7,M,,*7 C
$GPRMC,090115.000,A,3958.2846,N,11616.6456,E,0.00,0.00,080110,,,A*65 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090116.000,3958.2846,N,11616.6456,E,1,8,1.00,67.8,M,-6.7,M,,*7 0
$GPRMC,090116.000,A,3958.2846,N,11616.6456,E,0.00,0.00,080110,,,A*66 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090117.000,3958.2845,N,11616.6457,E,1,8,1.00,67.8,M,-6.7,M,,*7 3
$GPGSA,A,3,29,15,10,18,09,21,24,27,,,,,1.28,1.00,0.79*08 $GPGSV,3,1,10,24,78,302,38,15,77,207,42,29,36,238,48,10,33,073,24*76 $GPGSV,3,2,10,21,29,310,39,08,22,054,,18,15,276,42,27,14,167,36*7D $GPGSV,3,3,10,09,05,175,35,40,,,*45
$GPRMC,090117.000,A,3958.2845,N,11616.6457,E,0.00,0.00,080110,,,A*65 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090118.000,3958.2846,N,11616.6457,E,1,8,1.00,67.8,M,-6.7,M,,*7 F
$GPRMC,090118.000,A,3958.2846,N,11616.6457,E,0.00,0.00,080110,,,A*69 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090119.000,3958.2846,N,11616.6458,E,1,9,0.85,67.8,M,-6.7,M,,*7 C
$GPRMC,090119.000,A,3958.2846,N,11616.6458,E,0.00,0.00,080110,,,A*67 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090120.000,3958.2847,N,11616.6459,E,1,9,0.85,67.8,M,-6.7,M,,*7 6
$GPRMC,090120.000,A,3958.2847,N,11616.6459,E,0.00,0.00,080110,,,A*6D $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090121.000,3958.2847,N,11616.6460,E,1,9,0.85,67.8,M,-6.7,M,,*7 D
$GPRMC,090121.000,A,3958.2847,N,11616.6460,E,0.00,0.00,080110,,,A*66 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090122.000,3958.2847,N,11616.6461,E,1,9,0.85,67.8,M,-6.7,M,,*7 F
$GPGSA,A,3,29,15,10,18,09,21,24,08,27,,,,1.14,0.85,0.77*0D $GPGSV,3,1,10,24,78,302,38,15,77,207,42,29,36,238,48,10,33,073,22*70 $GPGSV,3,2,10,21,29,310,39,08,22,054,21,18,15,276,42,27,14,167,36*7E $GPGSV,3,3,10,09,05,175,35,43,,,*46
$GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
$GPGGA,090123.000,3958.2848,N,11616.6462,E,1,9,0.85,67.8,M,-6.7,M,,*7 2
$GPRMC,090123.000,A,3958.2848,N,11616.6462,E,0.00,0.00,080110,,,A*69 $GPVTG,0.00,T,,M,0.00,N,0.00,K,A*3D
GPS数据格式定义为（以数据手册为准）：
GPS 数据格式
GPRMC（建议使用最小GPS数据格式）
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>
1) 标准定位时间（UTC time）格式：时时分分秒秒.秒秒秒（hhmmss.sss）。
2) 定位状态，A = 数据可用，V = 数据不可用。
3) 纬度，格式：度度分分.分分分分（ddmm.mmmm）。
4) 纬度区分，北半球（N）或南半球（S）。
5) 经度，格式：度度分分.分分分分。
6) 经度区分，东（E）半球或西（W）半球。
7) 相对位移速度， 0.0 至 1851.8 knots
8) 相对位移方向，000.0 至 359.9度。实际值。
9) 日期，格式：日日月月年年（ddmmyy）。
10) 磁极变量，000.0 至180.0。
11) 度数。
12) Checksum.(检查位)
GPGSV（所示卫星格式）
$GPGSV, <1>,<2>,<3>,<4>,<5>,<6>,<7>,<4>,<5>,<6>,<7>,<8>
1) 天空中收到讯号的卫星总数。
2) 定位的卫星总数。
3) 天空中的卫星总数，00 至 12。
4) 卫星编号， 01 至 32。
5) 卫星仰角， OO 至 90 度。
6) 卫星方位角， OOO 至 359 度。实际值。
7) 讯号噪声比（C/No）， 00 至 99 dB；无表未接收到讯号。
8) Checksum.(检查位).
第<4>,<5>,<6>,<7>项个别卫星会重复出现，每行最多有四颗卫星。其余卫星信息会于次一行出现，若未使用，这些字段会空白。
GPGSA（GPS精度指针及使用卫星格式）
$GPGSA,<1>,<2>,<3>,<3>,,,,,<3>,<3>,<3>,<4>,<5>,<6>,<7>
1)模式 2：M = 手动， A = 自动。
2)模式 1：定位型式 1 = 未定位， 2 = 二维定位， 3 = 三维定位。
3) PRN 数字：01 至 32 表天空使用中的卫星编号，最多可接收12颗卫星信息。
4) PDOP-位置精度稀释 0.5 至 99.9.
5) HDOP-水平精度稀释 0.5 to 99.9.
6) VDOP-垂直精度稀释 0.5 to 99.9.
7) Checksum.(检查位).
GPS固定数据输出语句(＄GPGGA)
这是一帧GPS定位的主要数据，也是使用最广的数据。为了便于理解，下面举例说明＄GPGGA语句各部分的含义。例1是用GN－77N和笔者开发的软硬件接口，在笔者所在地接收到的＄GPGGA语句的内容。
例1：＄GPGGA，050901，3931.4449，N，11643.5123，E，1，07，1.4，76.2，M，－7.0，M，，＊65
其标准格式为：＄GPGGA，(1)，(2)，(3)，(4)，(5)，(6)，(7)，(8)，(9)，M，(10)，M，(11)，(12)＊hh(CR)(LF)
各部分所对应的含义为：
(1)定位UTC时间：05时09分01秒
(2)纬度(格式ddmm.mmmm:即dd度，mm.mmmm分)；
(3)N/S(北纬或南纬)：北纬39度31.4449分；
(4)经度(格式dddmm.mmmm：即ddd度，mm.mmmm分)；
(5)E/W(东经或西经)：东经116度43.5123分；
(6)质量因子(0=没有定位，1=实时GPS，2=差分GPS)：1=实时GPS；
(7)可使用的卫星数(0～8)：可使用的卫星数=07；
(8)水平精度因子(1.0～99.9)；水平精度因子=1.4；
(9)天线高程(海平面，－9999.9～99999.9，单位：m)；天线高程=76.2m);
(10)大地椭球面相对海平面的高度(－999.9～9999.9，单位：m):－7.0m;
(11)差分GPS数据年龄，实时GPS时无:无;
(12)差分基准站号(0000～1023)，实时GPS时无:无;
＊总和校验域；
hh 总和校验数:65
(CR)(LF)回车，换行。
b.可视卫星状态输出语句(＄GPGSV)
例2：＄GPGSV，2，1，08，06，33，240，45，10，36，074，47，16，21，078，44，17，36，313，42＊78
标准格式：＄GPGSV，(1)，(2)，(3)，(4)，(5)，(6)，(7)，…(4),(5)，(6)，(7)＊hh(CR)(LF)
各部分含义为：
(1)总的GSV语句电文数；2;
(2)当前GSV语句号:1;
(3)可视卫星总数:08;
(4)卫星号:06;
(5)仰角(00～90度):33度;
(6)方位角(000～359度):240度;
(7)信噪比(00～99dB):45dB(后面依次为第10，16，17号卫星的信息);
＊总和校验域；
hh 总和校验数:78;
(CR)(LF)回车，换行。
注：每条语句最多包括四颗卫星的信息，每颗卫星的信息有四个数据项，即：(4)－卫星号，(5)－仰角，(6)－方位角，(7)－信噪比。
刚才我们看到的是单片机与GPS模块进行通信，由单片机进行GPS数据协议解析并通过显示屏显示的实例。现在，我们再来一起看一下如何用电脑PC来查看GPS数据，从而实现在电脑端实时观测GPS数据。下图是我们打开GPS上位机软件后的界面，我们将GPS开发板通过串口线与PC机的RS232串口相连，注意板上的串口通信跳线要设置成PC—GPS模式。然后在软件中设置好COM口通信序号就可以了，对于没有RS232串口的台式机或笔记本电脑，我们可以使用USB 转RS232的转接线来进行实验。从软件界面中，我们可以看到窗体中已将GPS 数据各个字段内容进行了直观地显示，如时间、日期、经度、纬度、信号质量等等。软件界面右侧将会显示我们已连接的卫星数据和信号强度。
当我们打开GPS开发板的电源后，经过一段时间，我们就可以收到卫星数据
了，如下图所示，PC机收到GPS模块发出的原始数据将显示在“Received Data”窗口中，同时，软件将自动解析这些复杂的数据，进行直观、形象的图形化显示。我们可以看到，刚有信号时，软件窗口中各字段显示框中已经实时显示了GPS
数据的的信息了。