GNSS-BASED REAL-TIME HIGH-PRECISION WAVE MEASUREMENT METHOD AND APPARATUS

摘要

Provided are a GNSS-based new real-time high-precision wave measurement method. GNSS phase, pseudorange and doppler frequency shift observed values and a broadcast ephemeris are collected by means of a GNSS receiver (or board card) and an antenna that are carried by a sea surface carrier such as a wave buoy; a three-dimensional speed of a carrier such as a buoy is acquired by using the epoch difference of phase observed values; and element information, such as a direction spectrum, a frequency spectrum, a wave height, a cycle and a wave direction of a wave are then obtained. A time-dependent displacement change can be obtained by means of integrating a speed for a certain duration and removing a linear trend term, and wave element information can also be obtained. No additional precision differential correction number is needed, thereby saving on service costs and communication costs of precision differential correction. The present invention is applicable to offshore and far-sea scenarios. High-precision wave element information is obtained in real time and is locally stored in a buoy or is periodically returned by means of communication, thereby expanding the working range of GNSS-based ocean wave measurement. The present invention has a high practical application value.