发明申请
- 专利标题: ACOUSTICAL HOLOGRAPHY WITH MULTI-LEVEL SQUARE WAVE EXCITATION SIGNALS
- 专利标题(中): 具有多级平方波激发信号的声学全息图
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申请号: US14029426申请日: 2013-09-17
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公开(公告)号: US20150078125A1公开(公告)日: 2015-03-19
- 发明人: Stephan Falter , James Norman Barshinger , Dirk Lange , Mark Howard Feydo , Werner Lammerich
- 申请人: General Electric Company
- 主分类号: G03H3/00
- IPC分类号: G03H3/00 ; G01S7/523
摘要:
Systems and methods are disclosed herein in which multi-level square wave excitation signals are used instead of or in addition to fully-analog excitation signals to drive an array of transceiver elements to create a sound field. Use of multi-level square wave excitation signals produces acceptable transceiver output with reduced complexity, cost, and/or power consumption as compared with use of fully-analog excitation signals. In addition, use of such signals facilitates system implementation using application-specific integrated circuits (ASICs) and is not as restricted in voltage level and speed. At the same time, the benefits and applications of fully-analog excitation signals (e.g., acoustic holography, beam superposition, signal-to-noise ratio (SNR) improvements, suppression of parasitic modes, increased material penetration, potential for coded pulsing algorithms and suppression of side lobes in ultrasonic field) can still be achieved with multi-level square wave excitation signals.