sounder

adj.

较合理的（sound的比较级形式）；较全面的；较明智的；

echo sounder回声测深器

1. A device used underwater to produce pulses of sound, as for an echo sounder.
   声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置

Multibeam sounder
Toward a Sounder Basis for Class Analysis
The Tiros-N Operational Vertical Sounder
Wideband channel sounder with measurements and model for the 60 GHz indoor radio channel
Symposium on Class Analysis: Toward a Sounder Basis for Class Analysis
WHISPER, A RESONANCE SOUNDER AND WAVE ANALYSER: PERFORMANCES AND PERSPECTIVES FOR THE CLUSTER MISSION
Characterization of methane retrievals from the IASI space-borne sounder
Dinitrogen pentoxide measurements from the improved stratospheric and mesospheric sounder: Validation of preliminary results
Measurements of water vapor distributions by the improved stratospheric and mesospheric sounder: Retrieval and validation
Identification of natural plasma emissions observed close to the plasmapause by the Cluster-Whisper relaxation sounder