2015年5月7日木曜日

GW-52 GT-31のリプレース。 LocoSys

GW-52
GW-52がもうすぐ出ると各お店がご案内中のようです。
今日は久しぶりにキャシーちゃんにれんらくする。。。。



GW-52のあんばいは やっぱりSailquik さんがテスト開始するそうです、今週あたりから。。
GT-31/32とGW-52の違いはスピード計測の制度があがる。
GT-11 10cm/s   --> GT-31/32   5cm/s  -->  GW-52 1cm/s になるような、、この意味不明??
かんたに言うと 今度は0.01kmの制度で計測できる。今までは0.01kmのオーダーは誤差あり。。

来週あたりESが届く予定。。試してみます。


GW-52 Introduction
GW-52 is a GPS instrument optimized to measure speed using GPS-Doppler effect.
Performance:
  • 􏰂  Screen speed resolution: 0.01 km/h
  • 􏰂  Screen update: 5Hz
  • 􏰂  Speed and GPS parameters update & log frequency: 5Hz in SBP data
    format
  • 􏰂  Log speed resolution 1 cm/s
  • 􏰂  Standard deviation of log speed is recorded as SDOP for each speed
    sample (resolution 1cm/s)
  • 􏰂  SDOP bar on screen to indicate speed measuring precision and quality of
    the satellite signals seen by GW-52
  • 􏰂  Speed Genie function with "current speed" (delayed by ~1s) or N-second
    average speed display
  • 􏰂  10-second average speeds above 60km/h measured with precision of
    3cm/s and 99.9% certainty. This means that most of measurements will
    have higher accuracy.
  • 􏰂  Inaccurate measurements can be easily identified using SDOP (Standard
    Deviation for each speed sample).
    Additional information about GW-52
    • 􏰂  GW-52 relies on line-of view satellite positions for maximum speed measurement accuracy
    • 􏰂  GW-52 speed measuring precision increases with measured speed due to physics of GPS-Doppler process (signal reflections and interference from stationary objects are filtered away by GPS receiver when it moves. The higher the receiver speed, the better this filtering is resulting in more precise speed measurement). For this reason GW-52 speed measuring precision has been tested for speeds in the range 60-100km/h 


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