Through a series of research cruises conducted by the R/V Ferdows-1 to assess Myctophid resources, using a SIMRAD EK500 scientific echosounder carried out the Target Strength measurement of Benthosema pterotum in the Oman Sea. The principal method was based on a direct in-situ split-beam measurement technique, which is implemented in the EK500 system. For real-time observations ,the target st...