Underwater Acoustic Monitoring With SonarPoint™
At Desert Star, we get a lot of questions about passive acoustic monitoring (PAM) capabilities and how SonarPoint recorders can be used to best serve a variety of projects all around the world. For that reason we have created a series of video tutorials designed to answer many common questions associated with underwater acoustics.
What Hydrophone Is Best For My Study?
There are two categories for hydrophone selection; Endcap Integrated or Cable Mounted (Free-Field).
Having multiple hydrophone options available is a valuable capability. SonarPoint was designed with modularity in mind so hydrophones can be easily exchanged while working in the field. You may choose to use cable connected hydrophones with free-field performance for precision sound measurements. Or rugged, endcap integrated hydrophones that can be programmed for your needs such as low sensitivity to capture strong industrial noise without clipping or high sensitivity to capture faint marine mammal vocalizations. The Desert Star integrated end cap hydrophone has a unique sloping frequency response capability which will allow you to simultaneously monitor very faint high frequency signals in the presence of strong low frequency noise without clipping. By extending the strong signal capability at low frequencies to over 200 dB while operating with a noise floor of under 30 dB at high frequencies, you can use them to observe animal response to industrial activity, survey for a specific type of underwater traffic or surface activity.
Which hydrophone is right for you? Watch the video below to find out more about self noise and frequency response curves.