NOMENCLATURE 



B Fish-pair vector 



DS Dynamic scattering (optical, in liquid crystal) 



h Vertical component of B 



H Horizontal component of B 



N Number of times target is scanned 



OC Outcropping 



Rj Echo range, fish no. 1 



R, Echo range, fish no. 2 



R, Echo range, chart readout for OC data 



SB Sphere-block 



t Time 



WR Wire rope 



X Horizontal distance of target from fish no. 2 



y^ Vertical distance of target below fish no. 2 



Z Along-track distance 



a Sonar depression angle 



j3; Fish elevation angle 



e Mean-square error 



17 Value of y^ for 6 =0 



6 Direction of B 



6 Sonar beam angle, athwartship 



5 Value of Xj for = 



^j Stereo-sonar parameter 



a Random error 



27 



