what is USB GPS Antenna

USB GPS receiver interface, also known as USB GPS Antenna , the cheapest price. The GPS Mouse GPS module, antenna and serial / USB port converter integrated chip, connected to the laptop's USB port through a period of 1 ~ 1.5m of cable. USB interface can transmit GPS location information, it can also supply power to the GPS module. 

GPS Mouse is ideal for notebook computers car navigation, but not suitable for use when walking. Vehicle navigation, GPS Mouse can be placed outside the car and adsorbed onto the roof to maximize the reception of GPS signals (high-quality automotive glass containing metal components to withstand ultraviolet light, will reduce the GPS signal strength).GPS Mouse has a serial / USB port converter chip, it would not be superfluous, designed to direct the GPS module USB interface is not finished? This "superfluous" design cause that GPS data interface protocol NMEA-0183, this protocol GPS data interface definitions for 4800bps serial data bus. The vast majority of electronic map software reads the GPS information via NMEA V2.0 port on the above criteria. If the GPS directly into a USB port design, there will be compatibility issues, and through the serial / USB port converter chip, on a computing device and then install the driver, you can simulate the USB port serial port, compatibility is very good. In fact, CF port and Bluetooth GPS receiver can be modeled as a serial port, can be recognized electronic map software.

In addition to the NMEA data interface protocol, the most famous is the Garmin GPS Garmin proprietary protocol. 
Garmin own map software only supports Garmin protocol, in addition to Google Earth Pro / Plus and OziExplorer 
Garmin protocol is also supported.