As expected, there's an upfront cost to obtain a receiver that can de-scramble the satellite signal.

正如我的预料，要想接收卫星广播信号，就得预付一部分费用。

The high dynamic satellite signal simulator device consists of hardware, software and position machine.

卫星信号模拟器由软件、硬件和上位机三部分组成。

In some special scenarios, such as road tunnels or tall buildings, the satellite signal is weak or indiscernible.

而在某些特殊的场景，如隧道或高楼路段，卫星信号较弱甚至无信号。

Considering the cost factor, the telemetry parameters and data formats for programmable satellite signal source are needed.

考虑到成本因素，采用遥测参数和数据格式均可编程卫星信号模拟源。