卫星链路计算软件Satmaster帮助(7)

Text Filename

文件名

Enter the full path to the text file you have previously prepared with the multiple site or satelllite data. The 'browse' button may be used to select the file. You must prepare a text file before you can use this module. eg C:\\Outages\\USA.txt

输入卫星或地面站文件的路径。按“浏览”按钮可以选择文件。使用前你必须准备好txt文件。

举例：C:\\Outages\\USA.txt

Satellite Name

卫星名称

Enter the literal name of the target satellite up to a maximum of 40 characters. (18 for satellite data records) Example Astra 2a

输入卫星名称，不超过40字符。（卫星文件记录不超过18个字符） 如Astra 2a

Satellite Longitude

卫星经度

Enter the longitude corresponding to the sub-satellite point of the satellite on the equator. This should be in decimal degrees with the suffix E for East and W for West. Examples 19.2E or 125.00W

输入该卫星赤道星下点的经度。这个值是10进制的小数，单位是度。如19.2E或125.00W。

Year of Interest

关注的年份

Enter the year that you wish the annual solar outage prediction to relate. 输入你需要预测日凌的年份

Frequency

频率

Enter the centre frequency of the carrier in GHz. For the uplink, typical values are around 6GHz and 14GHz for C and Ku band respectively. For the downlink, values of 4GHz and 12GHz are typical. The accepted range is 1GHz to 50GHz

输入上行载波的中心频率，以Ghz为单位。典型C波段和Ku波段的值为6GHz和14GHz。下行的典型频率为4Ghz和12GHz。可输入的范围为1Ghz到50GHz。

Season

季度

Seasons for solar outages are Spring and Autumn. Here we refer to the seasons as 'early' or 'late' because the southern and southern hemispheres, have opposite seasons. Select 'the 'Early' radio button to select outages in the first half of the year. Select the 'Late'\

日凌只发生在春秋两季。我们习惯于说“上半年”和“下半年”，因为南北半球季节是反的。 选择early，计算上半年的日凌。 选择Late，计算下半年的日凌。

Beamwidth Option

波束宽度选择

Select either 'standard' or 'wide' beamwidth when searching for solar outage events.

The region of sky scanned for solar outages depends on the given antenna beamwidth of the receiving station. Standard beamwidth, based on that of a theoretical uniformly illuminated aperture, is usually sufficient in practice. Tests have shown that the predicted outage windows are close to what is actually observed in practice.

Since antenna illumination patterns, and consequently beamwidths, can vary across antenna systems of the same size, a more pessimistic option is 'wide'. The result is that solar outages are predicted to be of longer duration and start and finish a few days earlier and later respectively. The calculated peak occurrence of the outage remains unchanged. The wide beamwidth option is set at 1.5 times that of standard and can be considered a 'belt and braces' option.

If you require a general listing over a whole range of antenna sizes then choose a small antenna size to capture the maximum outage window duration and frequency.

选择标准或者宽波束来计算日凌时间。

天空扫描的区域取决于地面接收站的波束宽度。标准波束宽度，基于口径的理论计算，在实际中广泛应用。实验证明预测与实际很接近。

基于天线照明情况得出的波束宽度，在相同大小的天线差异很大，所以“款波束宽度”是一个悲观的值。计算出的日凌时间会较长，开始和结束时间相应提前或延后几天。计算出的峰值出现时间不会改变。款波束设置了1.5倍的余量， 可以看做是一个双重保险。

如果你只想知道一个对于所有口径的日凌信息，只要输入一个较小的天线口径就可以得到。

Resolution

时间精度

This radio button group sets the resolution used by the solar outage search algorithm. Normally, resolution to the nearest minute is sufficient. However, for sites close to the equator, where outages are, at worst, very brief you may like to increase the resolution to the nearest second. It is important to note that there are many site/satellite combinations close to the equator where outages may not occur at all.

Warning: Calculating outages to the nearest second is very processor intensive, so the calculations will take some time to execute. Use the 'nearest minute' resolution wherever sufficient. A Pentium processor, or better, is recommended for the 'nearest second' resolution option.

这个选项选择计算中时间的精度。一般计算到分就可以了。但是接近赤道的天线，日凌时间非常短，你可能需要把精度改到秒。有很多卫星在赤道上的接收站完全没有日凌。 注意：

以秒计算日凌非常占CPU，所以需要较长时间。所以尽量使用分钟做单位。按秒计算起码需要一个奔腾的cpu。 Time Output 时间输出格式

Select \ Local Civil Time is the default setting but global operators may prefer output in GMT.

选择local输出当地时间。选择|GMT输出格林威治时间。当地时间是默认选项。但是全球的运营商都用格林威治时间。

Solar Outage Process All Visible Satellites

所有可见卫星的日凌。

This module may be used to process all the geometrically 'visible' satellites in the 'satlist.geo' database. No batch file is required. The results are placed on the clipboard ready for pasting into 'Microsoft Excel' or similar products. You also have the option to save as HTML.

这个模块用来计算所有“可见”的列于“satlist.geo”数据库的卫星。不需要日凌的文件。结果会输出到剪切板以粘贴到excel等软件中。也可以保存为HTML格式。 Site name Site latitude Site longitude Year of interest World Time Zone Antenna Diameter Frequency Season

Beamwidth option Resolution Time output

Solar Outage Batch Process (Multiple Satellites)

This module may be used to process many satellites based on data stored in a text file. The results are placed on the clipboard ready for pasting into 'Microsoft Excel' or similar products. You also have the option to save results as HTML

这个模块可以计算txt文件中多个卫星的日凌。结果会输出到剪切板以粘贴到excel等软件中。也可以保存为HTML格式。 Overview o …… 此处隐藏：3228字，全部文档内容请下载后查看。喜欢就下载吧 ……