Table 1. Results of Stereo-Sonar Scans of 100-Foot-Depth Target Array 



(Assumed value of horizontal stereo baseline, H, is 42.00 feet.) 



Time 



Target" 



Fish No. 1 



Echo Range, 



Ri (ft) 



Fish No. 2 



Echo Range, 



R2 (ft) 



Fish Pair 



Depth 



Difference, 



h(ft)^ 



Computed 



Target 

 Elevation, 



Vt (fo 



Spread In 

 Target 



Elevations, 

 Yt (ft) 



0807 



SBl 



117.59 



116.10 



-19.17 



105.88 



9.80 



0807 



WRl 



120.70 



165.77 



-19.16 



95.53 



9.77 



083 3 



SBl 



118.11 



162.14 



-21.75 



115.68 





0833 



WRl 



121.73 



165.77 



-19.16 



105.30 





0734 



SB2 



94.28 



140.38 



-19.69 



70.77 



12.09 



0734 



WR2 



97.91 



144.01 



-19.69 



72.67 



24.92 



0831 



SB2 



107.23 



154.37 



-19.68 



65.19 





0831 



WR2 



112.93 



158.51 



-20.20 



92.72 





0838 



SB2 



138.31 



186.49 



-18.13 



72.95 





0838 



WR2 



142.97 



189.60 



-16.58 



69.07 





085 3 



SB2 



55.43 



95.83 



-23.83 



77.28 





085 3 



WR2 



62.16 



101.01 



-23.83 



84.56 





0719 



WR2 



102.05 



147.64 



-18.13 



67.80 





0829 



SB3 



110.86 



158.00 



-19.68 



66.73 



57.37 



0829 



WR3 



113.96 



160.59 



-19.69 



68.05 



15.60 



0648 



SB3 



146.60 



194.26 



-17.61 



74.31 





0732 



WR3 



138.31 



187.52 



-21.24 



83.65 





0720 



SB3 



88.06 



126.91 



-18.65 



97.46 





0749 



WR3 



155.41 



202.55 



-18.65 



81.71 





0839 



SB3 



143.49 



191.67 



-17.61 



73.10 





0851 



SB3 



101.01 



145.56 



-29.01 



124.10 





0750 



SB4 



117.07 



163.69 



-18.13 



64.5 3 



25.70 



0750 



WR4 



123.81 



170.95 



-17.61 



65.49 



30.20 



0827 



SB4 



125.36 



171.98 



-20.21 



74.54 





0827 



WR4 



130.02 



176.13 



-19.69 



89.45 





0842 



SB4 



121.22 



165.77 



-17.61 



90.23 





0849 



WR4 



105.68 



150.74 



-20.73 



95.69 





0849 



SB4 



99.98 



145.56 



-20.72 



88.01 





"SB 



Average value: h 



sphere-block; WR = wire rope on bottom next to SB. 

 19.85. 



