采用雷达波传导原理进行发射工作的导波雷达液位计，根据雷达波的时域反射(TDR)原理，结合低功耗、高性能的变送器单元，可以提供即时、准确的液位测量方案。导波雷达液位计采用的技术可以使雷达波能量在测量范围内更加集中，相比于非接触式雷达具备更加强大的抗干扰能力。

Micropower impulse radar (MIR) combines time domain reflectometry (TDR), equivalent time sampling (ETS), and modern low power circuitry. This synthesis of technologies creates a high-speed Guided Wave Radar (GWR) transmitter. The electromagnetic pulses are propagated via a waveguide that focuses the energy and yields a system many times more efficient than Non-Contact Radar.