(listed as the following 4 points) due to the literature in this area is not easy to find.. So God help you a lot of trouble ~ if you have the relevant Chinese and English (the best English), then sent to The more, the better..1 development process: divided into several stages, major events of the year, turning point, the extent of the current application, advantages and disadvantages2 technical issues: key technologies, difficulties and limitations3 outlook4 GPS in the field of enlightenment to us
1.7 other applicationsThe navigation technologies used in this paper are as follows: GPS (GNSS); sonar technology; INS; navigation chart; radio navigation technology; image matching technology; other technologies.The communication technology mainly includes: FM and TV subcarrier unidirectional data / voice communication; beacon network bidirectional data communication; trunking communication; cellular communication; digital land mobile communication; satellite mobile communication; traffic trail communication etc..The first 5 kinds of communication technologies are mainly used in coastal, inland river and lake area.
