Abstract A versatile at-sea test array for performing test functions such as measug the acoustic performance of large aperture sonar systems. The array system comprises a linear horizontal array including at least two measurement transducer elements, a pair of transponders and a drogue for its deployment. The horizontal linear array is used to accumulate and analyze acoustic data of a ship, both surface and submarine, in the vicinity of the array and the two transponders are used to get the geometric data for the system and the two measurements combined together enables one to determine the amplitude of the signals as well as the slope or rate of amplitude variation of the signal as a function of the azimuth angle, thus helping accurate determination of the angular distribution of the acoustic energy being measured.
A test array system for testing sonar systems in a body of water which comprises: a plurality of transducer elements being arranged in a linear array; a pair of transponders, one of said pair of transponders being located adjacent one end of said linear array and the other transponder of said pair of transponders being located adjacent the other end of said linear array; and sensing means for tracking, said sensing means being located adjacent the mid point of said linear array.
Claim 2
Dependent Claim
82 words
A test array system for testing sonar systems in a body of water which comprises: a plurality of transducer elements being arranged in a linear array; a pair of transponders, one of said pair of transponders being located adjacent one end of said linear array and the other transponder of said pair of transponders being located adjacent the other end of said linear array; and sensing means for tracking, said sensing means being located adjacent the mid point of said linear array.
Claim 3
Dependent Claim
20 words
The array system of claim 1 further comprising: towing means for towing the test array in the body of water.
Claim 4
Dependent Claim
20 words
The array system of claim 2 wherein each of said plurality of transducer elements includes a hydrophone and a projector.
Claim 5
Dependent Claim
19 words
The array system of claim 3 wherein each of said pair of transponders includes a hydrophone and a projector.
Claim 6
Dependent Claim
13 words
The array system of claim 4 wherein said sensing means includes a hydrophone.
Claim 7
Dependent Claim
20 words
The array system of claim 5 wherein said pair of transponders are located at the ends of said linear array.
Claim 8
Dependent Claim
20 words
The array system of claim 6 wherein said tracking means is located at the mid point of said linear array.
Claim 9
Dependent Claim
15 words
The array system of claim 7 wherein said linear array is a horizontal linear array.