丹麦RESON www.reson.com/
丹麦RESON公司的精密参考水听器主要设计用于精密水下声学测量、信号探测以及校准参考声学投影。RESON公司的水听器在科学研究、海军和环境监测的参考测量领域闻名于世，另外也用于工业和商业产品领域过程控制。
作为一个世界领先的超声仪器公司，RESON在基于声学测量系统和工业产品领域具有广泛的知识和经验。因此除了作为一个高质量水听器和声学传感器供应商以外，RESON也针对客户需要提供和设计最佳的解决方案。
对于大多数的严酷应用，RESON根据建立在英国的国家物理实验室标准提供校准服务。
4000系列水听器
该系列水听器典型用于精密参考测量、参考投影、被动阵列、定位系统和跟踪系统。
2013年Teledyne Technologies将收购RESON 

RESON A/S is the holding Company of the RESON Group. Corporate headquarters are located in Denmark. RESON subsidiaries are established in the USA, UK, Germany, and Netherlands. In addition to these subsidiaries there are RESON representatives located in 25 countries.
We provide high quality standard tools for numerous underwater acoustic applications, budgets, and survey accuracy requirements. We are devoted to design and manufacture of more specific marine technological solutions. Products from RESON are backed by a world wide support network.
Our range of products covers digital state-of-the art multi-beam systems, (the trademarked SeaBat), compact, light-weight, and flexible single-beam sensors, (the NaviSound product line of underwater tools), PDS software, technological systems for 3D data collection and visualization, high-power transducers, and precision reference hydrophones.
In our design and development of underwater acoustic equipment, we continuously strive to meet the still increasing requirements for fast mobilization, cost-effective survey performance, and high-quality operational capability.
Some of our core business areas include: Offshore oil-, and gas industries, marine research institutions, hydrographic, and bathymetric surveyors, dredging operators, cable-laying companies, harbor construction companies, naval surveillance, and public environmental monitoring activities.