We are immersed in a high-tech computing environment, depending on its support to carry out our everyday tasks. Unfortunately, our rapidly increasing expectations of the intelligence of modern devices exceeds their abilities. We often expect devices to perceive their environment, understand our intent, and autonomously carry out appropriate tasks. This paper presents a hybrid genetic-fuzzy appr...

The topic of this paper arose out of a consideration of Costas sequences, which are used in sonar and radar applications. These sequences have the de/ning property that all di!erences of elements the same distance apart, are di!erent. Several in/nite families of Costas sequences are known; but there are many existence questions for length ¿ 32. In this article, we restrict ourselves to sequence...

Abstract Previous work using multibeam sonar to map diffuse hydrothermal flows is extended estimate the heat output of flows. In first step toward inversion, temperature statistics are obtained from data and compared thermistor in order set value an empirical constant. Finally, a simple model used obtain heat‐flux density sonar‐derived statistics. The method applied Cabled Observatory Vent Imag...

In the paper the conception of identification of underwater like mines objects was presented basis on images of underwater area. Methods of preliminary processing of images acquired by underwater vehicle and a method of seeking chosen elements on these images and their identification at using the Hougha transform were described. Moreover the results of preliminary processing and the results of ...

Our technical approach is aimed at two basic problems with undersea warfare: (1) knowing the environment, and (2) adapting the sensor to the environment to maximize sensor performance. A consequence of (1) in this approach is that the knowledge of the environment, along with accurate sensor performance models, provides more accurate feedback to an operator about current sensor performance, a re...

SONAR is the acronym for SOund Navigation And Ranging. Sonar techology is similar to other technologies such as: RADAR = RAdio Detection And Ranging; ultrasound, which typically is used with higher frequencies in medical applications; seismics, which typically uses lower frequencies in the sediments. The knowledge and understanding of underwater sound is not new. Leonardo Da Vinci discovered in...

GPS-denied environments pose a significant problem for unmanned aerial vehicles, or UAVs, operating autonomously within a confined airspace. In this paper, we outline and implement a basic algorithm to autonomously fly a quadcopter using low-cost sonar sensors in a GPS-denied environment. Furthermore, we outline a method for using simple sonar distance data to map our environment. Through the u...