I'm trying to create higher resolution data with a beam angle of 5> degrees (as close as 1 degree as possible). I have been experimenting with creating using an aluminum casing around the sensor input. Are there any other or perhaps better ways of doing this?
The datasheet, page 11, says:
CH201 Beam Patterns
The acoustic Field of View is easily customizable for the CH201 and is achieved by adding an acoustic housing to the transceiver that is profiled to realize the desired beam pattern. Symmetric, asymmetric, and omnidirectional (180° FoV) beam patterns are realizable.
An example beam pattern is shown in the Typical Operating Characteristics section of this document and several acoustic housing designs for various FoV’s are available from Chirp.
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