标签:cli tst exce ilo EDA ring bsp 指定 led
import java.math.BigDecimal; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; /** * (1)先计算出从格林威治时间公元2000年1月1日到计算日天数days; * (2)计算从格林威治时间公元2000年1月1日到计算日的世纪数t, 则t=(days+UTo/360)/36525; * (3)计算太阳的平黄径 : L=280.460+36000.770×t; * (4)计算太阳的平近点角 :G=357.528+35999.050×t * (5)计算太阳的黄道经度 :λ=L+1.915×sinG+0.020xsin(2G); * (6)计算地球的倾角 ε=23.4393-0.0130×t; * (7)计算太阳的偏差 δ=arcsin(sinε×sinλ); * (8)计算格林威治时间的太阳时间角GHA: GHA=UTo-180-1.915×sinG-0.020×sin(2G) +2.466×sin(2λ)-0.053×sin(4λ) * (9)计算修正值e: e=arcos{[ sinh-sin(Glat)sin(δ)]/cos(Glat)cos(δ)} * (10)计算新的日出日落时间 :UT=UTo-(GHA+Long±e); 其中“+”表示计算日出时间,“-”表示计算日落时间; * (11)比较UTo和UT之差的绝对值,如果大于0.1°即0.007小时,把UT作为新的日出日落时间值,重新从第(2)步开始进行迭代计算,如果UTo和UT之差的绝对值小于0.007小时,则UT即为所求的格林威治日出日落时间; * (12)上面的计算以度为单位,即180°=12小时,因此需要转化为以小时表示的时间,再加上所在的时区数Zone,即要计算地的日出日落时间为 :T=UT/15+Zone * 上面的计算日出日落时间方法适用于小于北纬60°和南纬60°之间的区域,如果计算位置为西半球时,经度Long为负数。 */ public class SunRiseSet { private static int[] days_of_month_1 = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; private static int[] days_of_month_2 = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; private final static double h = -0.833;//日出日落时太阳的位置 private final static double UTo = 180.0;//上次计算的日落日出时间,初始迭代值180.0 // 1、判断是否为闰年:若为闰年,返回1;若不是闰年,返回0 public static boolean leap_year(int year) { if (((year % 400 == 0) || (year % 100 != 0) && (year % 4 == 0))) return true; else return false; } // 1、求从格林威治时间公元2000年1月1日到计算日天数days public static int days(int year, int month, int date) { int i, a = 0; for (i = 2000; i < year; i++) { if (leap_year(i)) a = a + 366; else a = a + 365; } if (leap_year(year)) { for (i = 0; i < month - 1; i++) { a = a + days_of_month_2[i]; } } else { for (i = 0; i < month - 1; i++) { a = a + days_of_month_1[i]; } } a = a + date; return a; } //求格林威治时间公元2000年1月1日到计算日的世纪数t public static double t_century(int days, double UTo) { return ((double) days + UTo / 360) / 36525; } //求太阳的平黄径 public static double L_sun(double t_century) { return (280.460 + 36000.770 * t_century); } //求太阳的平近点角 public static double G_sun(double t_century) { return (357.528 + 35999.050 * t_century); } //求黄道经度 public static double ecliptic_longitude(double L_sun, double G_sun) { return (L_sun + 1.915 * Math.sin(G_sun * Math.PI / 180) + 0.02 * Math.sin(2 * G_sun * Math.PI / 180)); } //求地球倾角 public static double earth_tilt(double t_century) { return (23.4393 - 0.0130 * t_century); } //求太阳偏差 public static double sun_deviation(double earth_tilt, double ecliptic_longitude) { return (180 / Math.PI * Math.asin(Math.sin(Math.PI / 180 * earth_tilt) * Math.sin(Math.PI / 180 * ecliptic_longitude))); } //求格林威治时间的太阳时间角GHA public static double GHA(double UTo, double G_sun, double ecliptic_longitude) { return (UTo - 180 - 1.915 * Math.sin(G_sun * Math.PI / 180) - 0.02 * Math.sin(2 * G_sun * Math.PI / 180) + 2.466 * Math.sin(2 * ecliptic_longitude * Math.PI / 180) - 0.053 * Math.sin(4 * ecliptic_longitude * Math.PI / 180)); } //求修正值e public static double e(double h, double glat, double sun_deviation) { return 180 / Math.PI * Math.acos((Math.sin(h * Math.PI / 180) - Math.sin(glat * Math.PI / 180) * Math.sin(sun_deviation * Math.PI / 180)) / (Math.cos(glat * Math.PI / 180) * Math.cos(sun_deviation * Math.PI / 180))); } //求日出时间 public static double UT_rise(double UTo, double GHA, double glong, double e) { return (UTo - (GHA + glong + e)); } //求日落时间 public static double UT_set(double UTo, double GHA, double glong, double e) { return (UTo - (GHA + glong - e)); } //判断并返回结果(日出) public static double result_rise(double UT, double UTo, double glong, double glat, int year, int month, int date) { double d; if (UT >= UTo) d = UT - UTo; else d = UTo - UT; if (d >= 0.1) { UTo = UT; UT = UT_rise(UTo, GHA(UTo, G_sun(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))), glong, e(h, glat, sun_deviation(earth_tilt(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))))); result_rise(UT, UTo, glong, glat, year, month, date); } return UT; } //判断并返回结果(日落) public static double result_set(double UT, double UTo, double glong, double glat, int year, int month, int date) { double d; if (UT >= UTo) d = UT - UTo; else d = UTo - UT; if (d >= 0.1) { UTo = UT; UT = UT_set(UTo, GHA(UTo, G_sun(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))), glong, e(h, glat, sun_deviation(earth_tilt(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))))); result_set(UT, UTo, glong, glat, year, month, date); } return UT; } // 求时区 public static int Zone(double glong) { if (glong >= 0) return (int) ((int) (glong / 15.0) + 1); else return (int) ((int) (glong / 15.0) - 1); } // 日出 public static String getSunrise(BigDecimal longitude, BigDecimal latitude, Date sunTime) { if (sunTime != null && longitude != null && latitude != null) { double sunrise, glong, glat; int year, month, date; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String dateTime = sdf.format(sunTime); String[] rq = dateTime.split("-"); String y = rq[0]; String m = rq[1]; String d = rq[2]; year = Integer.parseInt(y); if (m != null && m != "" && m.indexOf("0") == -1) { m = m.replaceAll("0", ""); } month = Integer.parseInt(m); date = Integer.parseInt(d); glong = longitude.doubleValue(); glat = latitude.doubleValue(); sunrise = result_rise(UT_rise(UTo, GHA(UTo, G_sun(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))), glong, e(h, glat, sun_deviation(earth_tilt(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))))), UTo, glong, glat, year, month, date); return (int) (sunrise / 15 + 8) + ":" + (int) (60 * (sunrise / 15 + 8 - (int) (sunrise / 15 + 8))); } return null; } // 日落 public static String getSunset(BigDecimal longitude, BigDecimal latitude, Date sunTime) { if (sunTime != null && latitude != null && longitude != null) { double sunset, glong, glat; int year, month, date; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String dateTime = sdf.format(sunTime); String[] rq = dateTime.split("-"); String y = rq[0]; String m = rq[1]; String d = rq[2]; year = Integer.parseInt(y); if (m != null && m != "" && m.indexOf("0") == -1) { m = m.replaceAll("0", ""); } month = Integer.parseInt(m); date = Integer.parseInt(d); glong = longitude.doubleValue(); glat = latitude.doubleValue(); sunset = result_set(UT_set(UTo, GHA(UTo, G_sun(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))), glong, e(h, glat, sun_deviation(earth_tilt(t_century(days(year, month, date), UTo)), ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)), G_sun(t_century(days(year, month, date), UTo)))))), UTo, glong, glat, year, month, date); return (int) (sunset / 15 + 8) + ":" + (int) (60 * (sunset / 15 + 8 - (int) (sunset / 15 + 8))); } return null; } /** * 将当前时间转换为16进制 * * @return */ public static String getTimeTo16(String time) { Date date = null; SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { date = formatter.parse(time); } catch (ParseException e) { e.printStackTrace(); } //Date格式 Long t = date.getTime() / 1000; String hexString = Long.toHexString(t); System.out.println("十六进制:" + hexString); return hexString; } //将指定时间转换成 date 格式 public static Date getTime(String time) { Date date = null; SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); //日期 try { date = formatter.parse(time); } catch (ParseException e) { e.printStackTrace(); } return date; } public static void main(String[] args) { System.out.println(SunRiseSet.getSunrise(new BigDecimal(108.94359),new BigDecimal(34.352276),new Date())); System.out.println(SunRiseSet.getSunset(new BigDecimal(108.94359),new BigDecimal(34.352276),new Date())); } }
标签:cli tst exce ilo EDA ring bsp 指定 led
原文地址:https://www.cnblogs.com/bigsiji/p/13054054.html