铱星系统由卫星网络、地面网络、移动终端三部分组成,可提供任何地点(包括南北两极) 的语音、数据通信。系统有66颗低轨卫星分布在6个极平面上,在极平面上的11颗工作卫星。卫星在780公里的高空以27000公里/小时的速度绕地球旋转,100分钟左右绕地球一圈。每颗卫星与其他四颗卫星交叉链接,两个在同一个轨道面,两个在临近轨道面。
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162322578.bmp)
![](http://www.bjruifen.com/UpLoadFolder/Images/200882014154735.bmp)
铱星Iridium 9505A收星灵敏度高,特点及参数如下:
![](http://www.bjruifen.com/UpLoadFolder/Images/200881284249389.bmp)
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
快速进入界面;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
防水、防尘、防震;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
数据套件(选配):可进行数据传输,包括调制器、连接线(9针)、支架、CD盘;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
21种语言显示(包括中文);
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
免提耳机;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
电池:待机﹥30小时,连续通话超过3小时;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
液晶显示屏4 x 16;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
160个存储信息;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
音量可调节;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
收星信号强弱显示,电池电量显示;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
显示通话时长;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
开机密码,自动锁定;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
规格:158 x 62 x 59 mm ,375g ;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
工作频率:1616~1626.5MHz ,L-波段;
![](http://www.bjruifen.com/UpLoadFolder/Images/2008811162747595.bmp)
工作温度:(使用外接电源)-30℃~60℃ ,(电池)-20℃~60℃;
标准配置:主机、拉杆天线、转接头、旅行充电器、汽车充电器、5个插头、吸盘天线、锂电池(2800mAh)、挂绳、耳机、说明书、皮套。