Hot Start - The GPS receiver remembers its last calculated position and which satellites were in view, the almanac used, and the UTC Time. It then performs a reset and attempts to acquire satellites and calculate a new position based upon the previous information. This is the quickest re-acquisition of a GPS lock.
Warm Start - The GPS receiver remembers its last calculated position, almanac used, and knows the UTC Time, but not which satellites were in view. It then performs a reset and attempts to obtain the satellite signals and calculate a new position. The receiver has a general idea of which satellites to look for because it knows its last position and the almanac helps identify which satellites are visible in the sky. This takes longer than a Hot Start but not as long as a Cold Start.
Cold Start - The GPS receiver dumps all information and resets. It then attempts to locate satellites and then calculate a GPS lock. This takes the longest because there is no known information. The GPS receiver has to attempt to lock a satellite signal from all of the satellites, basically like polling, which takes a lot longer than knowing which satellites to look for. This re-acquisition of a GPS lock takes the longest.
熱啟動--GPS**器儲存有其最後計算的可視衛星的位置、almanac(曆書)和UTC時間，在重啟以後，GPS**器以儲存的上述內容為基礎獲取和計算當前衛星的最新位置。
Hot Start - The GPS receiver remembers its last calculated position and which satellites were in view, the almanac used, and the UTC Time. It then performs a reset and attempts to acquire satellites and calculate a new position based upon the previous information. This is the quickest re-acquisition of a GPS lock.
暖啟動--GPS**器儲存有最後計算的衛星的位置、曆書和UTC時間，但儲存的內容不是當前可視衛星的資料。GPS**器重啟以後嘗試去獲得當前衛星和訊號並計算其新位置。**器基於其最後的位置和曆書得以大概知道當前天空中的可視衛星。
Warm Start - The GPS receiver remembers its last calculated position, almanac used, and knows the UTC Time, but not which satellites were in view. It then performs a reset and attempts to obtain the satellite signals and calculate a new position. The receiver has a general idea of which satellites to look for because it knows its last position and the almanac helps identify which satellites are visible in the sky. This takes longer than a Hot Start but not as long as a Cold Start.
冷啟動：GPS**器清空了所有歷史資訊並重啟，然後它嘗試定位並鎖定衛星，由於沒有先前資訊，這將花去很長的時間。GPS**器採用類似於輪詢的方法，從所有的衛星中鎖定訊號，這將比事前知道該搜尋哪些衛星要慢不少。這一類重新獲取鎖定要花最長的時間。
Cold Start - The GPS receiver dumps all information and resets. It then attempts to locate satellites and then calculate a GPS lock. This takes the longest because there is no known information. The GPS receiver has to attempt to lock a satellite signal from all of the satellites, basically like polling, which takes a lot longer than knowing which satellites to look for. This re-acquisition of a GPS lock takes the longest.
附註：比較和小結
熱啟動就是啟動時可視的衛星資訊和之前儲存的資訊是基本一致的。
暖啟動和熱啟動的區別在於經管也儲存了之前的衛星資訊，可視搜星的時候可視衛星（當前衛星）並不是以前記憶的資訊的衛星，但是儲存的歷史資訊仍然有利於快速定位當前衛星。
冷啟動，最好理解，就是在沒有歷史資訊的情況下一個一個輪詢的方式搜星定位，所需時間最長。