์œ ํŠœ๋ธŒ์— Sonar SystemsํŠœํ† ๋ฆฌ์–ผ ๋ณด๋ ค๊ณ  ํ•˜๋Š”๋ฐ ์˜์–ด๊ณ ํ†ตใ… ใ