风速风向的解算方法研究

为了提高船舶航行中风速风向的测量精度，提出一种风速风向测量误差解算方法。首先利用WXT520气象仪测量风速和风向，因为这其中包含了舰船的航速、航向以及舰船船体倾斜所引入风速、风向的测量误差，所以需要对其进行解算，包括对水平风速的补偿和真风速解算。利用倾角传感器测量船体的姿态补偿水平风速，根据风的来向，确定测量的数据是否有效，再进一步对这些有效数据进行三角换算，由相对风速测量值求解出相对风速真值；进而利用航速和航向，根据三角关系，解算出真风速和真风向。

Study on the Calculation Method of the Wind Speed and Direction

In order to improve the measurement accuracy of wind speed and wind direction in ship navigation, a method of measuring the error of wind speed and direction was proposed. The wind speed and wind direction measured by WXT520 are the relative ones and contain the measurement error caused by the speed, heading and tilt angle of the ship, so they need to be calculated, including compensation for horizontal wind speed and true wind speed solver. The attitude of the hull is measured by angle sensor and the horizontal wind speed is compensated, and the wind direction is used to determine whether the measured data is valid. The effective data are processed by triangle conversion, so the relative wind speed true value is calculated by relative wind speed measurement value. Then, by using the speed and direction of the ship and according to the triangle relationship, the true wind speed and true wind direction are calculated.