Shulou(Shulou.com)06/02 Report--

1. Key knowledge

1. GPS can exist independently and does not depend on the network.

2. AGPS must rely on GPS. If GPS does not work properly, AGPS is out of the question.

3. AGPS can be understood as an auxiliary tool, which is useful on the basis of GPS. It can be used or not, just like MM lipstick.

4. AGPS must use the network, GPRS or WIFI

5. AGPS downloads the information of a satellite through the network when GPS does not find the satellite signal, and then passes this data to GPS,GPS to find the satellite directly, saving the time of cold start star search (tens of seconds fast, a few minutes slow).

6. AGPS is not valid indoors. Why? Because the indoor GPS is invalid

7. AGPS is used, but the positioning speed is faster than GPS.

8. LBS base station location service, must have SIM card, can not work without card

9. For WIFI positioning, you can locate without GPS or SIM card, as long as you can connect to WIFI. The premise is that the APK backend using this function has a corresponding WIFI address database, such as GOOGLE MAP. Baidu and Gaode should also be able to.

Second, test methods

Test machine Haier H8 (this machine GPS module is better, 45 seconds to start), test address, indoor (company), outdoor (downstairs lawn)

Indoor:

1. Indoors, I reset my phone, insert the SIM card, turn it on, close GPS, open the data, open the browser and log in to Baidu, click on the location or enter the map page, but I can't locate it.

2. Indoors, I reset my phone, insert SIM card, turn on GPS, open data, open browser, log in to Baidu, click on location or enter the map page, but I can't locate it.

3. Indoors, I reset my phone, turn it on, turn off GPS, open WIFI, open a browser, log in to Baidu, click on the location or enter the map page, but I can't locate it.

4. Indoors, I reset my phone, turn on my phone, open GPS, open WIFI, open a browser, log in to Baidu, click on the location or enter the map page, but I can't locate it.

Outdoor:

1. Outside, I reset my phone, insert the SIM card, turn it on, close GPS, open the data, open the browser and log in to Baidu, click on the location or enter the map page, but I can't locate it.

2. Outside, I reset the phone, insert the SIM card, boot, open GPS, open the data, open the browser and log in to Baidu, click on the location or enter the map page, wait more than 10 seconds, click again, you can locate.

3. Outside, I reset my phone, turn it on, turn off GPS, turn on WIFI (connect to the WIFI hotspot of my own phone), open a browser and log in to Baidu, click on the location or enter the map page, but I can't locate it.

4. Outside, I reset my phone, turn on my phone, turn on GPS, open WIFI (connect to the WIFI hotspot of my own phone), open a browser to log in to Baidu, click on the location or enter the map page, wait about 10 seconds, and click again to locate.

If you have any questions, please send email to 237722726@qq.com. Thank you for your reading.

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