gps module 1pps

Android GPS module is gps.default.so in the system/lib/hw/directory, general GPS-enabled mobile phones should implement this module and real GPS hardware interactionthe GPS in QEMU is to construct a gps.default.so, but this so doe

region Center Meridian (120E) where the location of the Sun ( theoretical Time ) as the legal time , rather than Beijing's place in the sun (Beijing is roughly located near 116e,40w).How is the time of the mobile device and computer calibrated?As we all know, there are a large number of Internet timing services, such as the United States Naval Observatory Time Service Center, China National Institute of Chinese Academy of Sciences. These timing services provide a variety of data formats, such a

I was developing androidProgramWhen calling GPS, they all use functions directly. Public void Requestlocationupdates (Long mintime, float mindistance, Criteria, pendingintent intent) However, the customer recently said that the GPS of the mobile phone is not accurate enough, so he learned about the two parameters in the function signature from the Google developer website. If there is any inac

The GPS serial port reads the DDMM. MMMM formatThe general upper machine is DD. dddddd° or dd°mm ' SS ' format, both of which can be entered directly in GEExample: 3147.8749 (example, the same latitude) format is DDMM. MMMMConversion into degrees:1. The part of the degree is directly 31,2. The remaining MM. Mmmm/60= degrees, so 47.8749/60=0.797915The conversion degree is 31.797915°Convert into degrees seconds:1. Similarly, the part of the degree is di