The geomagnetic orientation is one of the important mechanisms for orientation of insects in the long distance migration.
地磁定向是昆虫远距离迁飞定向的重要机制之一。
The natural geomagnetic field varies over the Earth’s surface between about 0.035 - 0.07 mT and is perceived by certain animals that use it for orientation.
地球表面的天然地磁场幅度在0.035-0.07mT之间不等，它可被某些动物察觉，用其指导方向。
We also show how to get a local orientation and an approximate formula for geomagnetic declination. Our work clarifies the misconception about polarized wave of antenna.
给出当地方向的确定方法和地磁偏角的近似计算式，澄清了接收天线极化波容易造成的误解。
We also show how to get a local orientation and an approximate formula for geomagnetic declination. Our work clarifies the misconception about polarized wave of antenna.
给出当地方向的确定方法和地磁偏角的近似计算式，澄清了接收天线极化波容易造成的误解。
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