一、从“太阳高度”切入1.根据正午太阳高度值确定正午太阳高度等于当地纬度与太阳直射点纬度(当地夏半年取正值,冬半年取负值)差的绝对值的余角。可以由某地某日的正午太阳高度和太阳直射点纬度确定该地纬度。2.根据正午太阳高度的年变化规律确定 First, from “sun height ” into 1 according to midday sun height to determine the midday sun height is equal to the latitude and the sun at the direct latitude point (the local summer half to take a positive value, the winter half a year to take a negative value) the absolute value of the remaining angle . The latitude of the place can be determined by the midday sun height of a certain day and the latitude of the sun’s direct point. 2. According to noon the sun changes in the height of the law to determine