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不失真测试是测试技术最基本的理论和技术问题。不失真测试的条件限定了工程中常用传感器的应用范围。从理论上分析研究了常用一阶、二阶测试系统进行测试的信号反失真问题,不仅扩展了传感器的应用范围,而且丰富了信号处理理论。
Undistortion testing is the most basic theoretical and technical issue of testing techniques. The condition of undistorted testing limits the range of applications of common sensors in engineering. The signal anti-aliasing problem of the first-order and second-order test systems is analyzed and studied theoretically. This not only expands the application range of the sensor, but also enriches the signal processing theory.