添加海拔因素

basic/earth_test.go

@@ -0,0 +1,13 @@
+package basic
+
+import (
+	"fmt"
+	"math"
+	"testing"
+)
+
+func Test_EarthFn(t *testing.T) {
+	fmt.Println(HeightDistance(10000))
+	//近似算法，差距在接受范围内？
+	fmt.Println(math.Sqrt(((EARTH_AVERAGE_RADIUS)*2 + 10000) * 10000))
+}