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bat_silohuetteBAT STUDIES

cave_batBats have always been a passion of ACS owner, Mike Balistreri, ever since his undergraduate days at the University of Wisconsin when he learned in a physiology class that these small mammals are capable of maintaining body temperatures below the freezing point. The more he began to study these remarkable creatures, the more fascinated he became. This eventually lead to bats being the subject of his M.S. and Ph.D. theses. Having worked with bats for over 20 years, Mike is happy to have the chance to apply his in-depth knowledge of the biology, ecology, and natural history of these animals to wind energy projects. ACS is proud to provide the following bat-related services:

bulletRoost site surveys
bulletCave surveys
bulletVertical cliff face surveys
bulletPost-construction surveys
bulletMist-netting and other other live-capture methods
bulletUltrasonic detection studies
bulletX-band radar coordination
bulletRemotely-operated detection systems
bulletBat call analyses



sonogramFor years, ultrasonic detectors have been a mainstay in bat distribution and activity studies. The ability of these devices to "hear" the ultra-high-pitched frequencies emitted by bats has proven useful in many applications. Currently, the most common systems in use at wind farms across the country are manufactured by AnaBat, Pettersson, and Binary Acoustic Technology. ACS is experienced with the use of these and other systems and specializes in adapting these units for use in long-term remote monitoring applications where weatherproofing and dependability are essential.



Most of the detection systems in use today are built around antiquated detector designs that were not originally intended for long-term or remote operation. While technical improvements in weatherproofing, data storage peripherals, hardware control features, and the like, have been steadily coming over the years, these units are still limited by their original designs. As a superior alternative, ACS is pleased to announce its new detection system that allows remote monitoring, programming, downloading, and adjustment to the bat detectors from anywhere with cellular (or satellite) coverage. This system, utilizing Binary Acoustic Technology equipment, will "out detect", cost significantly less to operate and maintain, and be more readily available than any other bat detection system. The complete system, including cellular service, can be leased for under $500/month or purchased outright for under $5,500. The savings realized by the elimination of monthly download time and travel expenses required by traditional systems more than justifies its use. Contact ACS for more information.



radar_trailerAlthough bats can often be distinguished from birds and insects on radar screens by their size and erratic flight patterns, this is by no means a steadfast rule. ACS has been working with DeTect, world leaders in X-band radar technologies, to develop a protocol that will enable the differentiation of bats from other targets in radar images. Because of its far greater range and acuity compared to ultrasonic detection devices, radar is proving itself to be the most useful tool in assessing bat movement and activity. ACS is excited about these possibilities and is proud to be a part of these landmark innovations.



balun_boxThe need to mount bat detectors on towers at heights in excess of 50 meters is one of the common technical problems that must be overcome while designing and implementing effective pre- and post-construction wind site monitoring studies.  Difficulties and expense of erecting the support towers aside, the bat researcher is faced with the dilemma of gaining access to the recorded data.  Common solutions to this problem have included the use of telescoping towers, microphone extension cables, and FM or other wireless transmission devices.  Unfortunately, all of these methods have inherent physical or electronic deficiencies and limitations.

After consultations with wind research colleagues, bat detector manufacturers, and professional audio and video technicians, ACS developed the "balun method" to address this data transmission problem. A PDF document describing the balun method is available here.

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