CM52 series products are UWB+GNSS indoor and outdoor integrated positioning module solutions independently for indoor and outdoor fusion positioning market, including CM503B base station module and CM522T tag module, which supports the Channel 9 (7987.2MHz) frequency point required by the latest Chinese regulations by default.
星期五, 06 10月 2023 19:39

How a Kalman filter works

Kalman filter makes me sad because it is such a general and powerful tool for combining information in the presence of uncertainty. At times its ability to extract accurate information seems almost magical— and if it sounds like I’m talking this up too much, then take a look at this previously posted video where I demonstrate a Kalman filter figuring out the orientation of a free-floating body by looking at its velocity. Totally neat!

星期六, 27 05月 2023 20:49

UWB定位简介

随着GPS等各种卫星定位系统使用日渐成熟,其固有缺陷也逐渐显露,这其中最受到诟病的,就是定位精度和室内应用问题。
手机生态日趋成熟、智能汽车蓬勃发展,如果要为汽车手机两大生态找一个连接点,那么“UWB数字钥匙”可能就是这个极为关键的生态交叉点。
室内定位领域近年来发展迅速,现有的定位技术大体上分为基于TOF(Time of Flight,飞行时间)测距定位方案和基于TDOA(Time Difference of Arrival,到达时间差)定位方案。但这两种技术方案在实现二维平面定位时面临着同样问题:若要获得平面内的目标位置,至少需要三台以上的定位基站有较理想的LOS(Line Of Sight, 可视路径)路径,否则就会存在定位盲区。这一限制使得室内定位的基站部署数量和成本高居不下。

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