TTFF TTFF TTFF (Time To First Fix) TTFF TTFF (Time To First Fix) Time to First Fix GPS takes some time to acquire TTFF TTFF (Time To First Fix) TTFF (Time To First Fix) TTFF (Time To First Fix) TTFF (Time To First Fix) 第一次定位 cold TTFF cette page TTFF (Time To First Fix) Time To First Fix TTFF (Time To First Fix) TTFF (Time To First Fix) TTFF TTFF (Time To First Fix) TTFF TTFF cold TTFF TTFF (Time To First Fix) TTFF (Time To First Fix) TTFF TTFF (Time To First Fix) TTFF (Time To First Fix) 위성과의 데이터 링크가 고정되기까지의 시간 https://en.wikipedia.org/wiki/Time_to_first_fix TTFF (Time To First Fix) TTFF time to first fix https://en.wikipedia.org/wiki/Time_to_first_fix TTFF cold TTFF 首次定位 TTFF (Time To First Fix) GPS cold start takes 15 minutes. cold TTFF TTFF 首次定位 time to first fix (TTFF) first fix Time To First Fix GPS takes some time to acquire TTFF TTFF TTFF (Time To First Fix) GPS takes some time to acquire GPS takes some time to acquire time to first fix TTFF (Time To First Fix) TTFF (Time To First Fix) time-to-first-fix fix time to first fix GPS cold start takes 15 minutes. TTFF time-to-first-fix