Users only need to have a general understanding of the specific technical indicators of the three-generation chips, and more importantly, compare and observe whether Has the following characteris...
Users only need to have a general understanding of the specific technical indicators of the three-generation chips, and more importantly, compare and observe whether Has the following characteris...
GPS boot positioning is divided into three types: cold start, warm start and hot start: Cold start: The following conditions are all cold start. When using it for the first time; when the ephemer...
In the past, due to the weak ability to collect satellites, the early GPS always had a disconnection, especially when it was used for navigation in the city, which caused a lot of inconvenience to...
I believe that many of my friends have the experience of accidentally speeding. When I catch up with the smooth ride one day, I feel very happy, and my feet are a little hard. Too bad, I was caugh...
At present, the GPS receiver circuit in practical application is generally composed of four parts: antenna unit, radio frequency unit, communication unit and calculation unit. Based on the analysi...
. GPS global positioning system is a wireless navigation system that realizes positioning through navigation satellites. It can realize omnipotent (ocean, land, aviation, aerospace), global, all-...
The previous generation of GPS is the "Meridian" navigation satellite developed by the US Navy in 1964, which is a low-orbit satellite. The main purpose is for the navigation of nuclear ...
1. Scheme demonstration and preliminary design stage. From 1973 to 1979, the United States launched 4 test satellites, established a ground tracking network, and studied the corresponding hardware...
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