摘要
GPS浮标高程观测数据中含有大量的噪声,为了尽可能消除噪声影响和获取有效的潮位信息,尝试选用几种不同的窗函数数字低通滤波器对GPS浮标高程观测数据进行滤波。通过实例计算和结果比较,得出矩形窗具有较好的滤波效果。
There is a lot of noise in the data observed by GPS buoy measurement system. To delete or weaken the effect of noise and get effective tide information, five kinds of digital low pass FIR （ finite impulse response） filters based on different windows are choosed. By calculating measurement data and comparing calculating results, it is obtained that Itanning window has a better effect.
出处
《海洋测绘》
2012年第6期10-12,共3页
Hydrographic Surveying and Charting
关键词
GPS浮标
FIR数字低通滤波器
功率谱
窗函数
中误差
GPS buoy
digital low pass FIR filter
power spectrum
window function
root mean square error
