[信息与通信]卫星链路计算软件Satmaster帮助.doc

上下行部分 Site Name / Location Enter the literal name of the site where the earth station is located up to a maximum of 40 characters (18 for country data files) Example input for country data files (18 characters maximum) Liverpool Example input for all other forms (40 characters maximum) Liverpool, Merseyside, England. 基站名称 输入基站所处位置的名称，最多40个字母。 国家数据文件名举例（最多18个字母）：liverpool 其他格式输入举例：Liverpool, Merseyside, England. Site Latitude Enter the latitude of the site where the earth station is located. This must be entered in decimal degrees with the suffix N for north and S for South. No spaces are allowed. Examples 53.33N or 27.89S Important Note: When entering data into country data files latitudes are required in degrees and minutes format as obtained from maps and atlases. In this case the fractional part represents the number of minutes and cannot exceed 59. In all other cases input in decimal degrees are assumed. A conversion facility is provided under the calculate menu. 基站纬度 输入地面站的纬度。必须以小数后跟N或S表示。不能输入空格。比如53.33N或27.89S 注意事项 当输入国家数据文件时纬度需要以地图上的度和分为单位。这种情况下，小数部分为分的表示，不能超过59。在其他情况下，都是以度来表示的。Caculate菜单中有一个转换工具。 Site Longitude Enter the longitude of the site where the earth station is located. This must be entered in decimal degrees with the suffix W for west and E for East. No spaces are allowed. Examples 3.00W or 29.79E Important Note: When entering data into country data files longitudes are required in degrees and minutes format as obtained from maps and atlases. In this case the fractional part represents the number of minutes and cannot exceed 59. In all other cases input in decimal degrees are assumed. A conversion facility is provided under the calculate menu. 基站经度 输入基站的经度。必须以小数后跟E或W表示。不能输入空格。比如3.00W 或29.79E 注意事项 当输入国家数据文件时纬度需要以地图上的度和分为单位。这种情况下，小数部分为分的表示，不能超过59。在其他情况下，都是以度来表示的。Caculate菜单中有一个转换工具。 Altitude of Site Enter the altitude of the earth station above sea level. This is primarily used in the calculation of rain attenuation and atmospheric absorption. The