Signal processing apparatus and method专利检索- 用积分加速度的方法测量速度专利检索查询-专利查询网

Signal processing apparatus and method
申请号	EP90302557.5	申请日	1990-03-09	公开(公告)号	EP0389155A3	公开(公告)日	1992-11-04
申请人	GEC-MARCONI AVIONICS (HOLDINGS) LIMITED;			发明人	Watson, Norman Frederick;
摘要	A method and apparatus (Fig. 3 and 4) for correcting a signal representing the integral of an input signal ACC. (Fig. 3) to eliminate the effects of errors in the input signal comprises deriving from one or more signals which bear functional relationship with the errors samples 15′ at 16, subjecting the samples to a correction algorithmic process at 18, integrating the process results at 19 and therewith correcting the input signal integral at 21. This differs from known arrangements, that demand a high sampling rate (at intervals 16) in accordance with the Nyquist sampling theorem and result in a large amount of sample data to be processed, by processing fewer samples 15′ taken at below the Nyquist rate at random or pseudorandom intervals or random ones of the intervals 16. Relatively few samples 15′ processed and integrated provide an acceptable quantitive estimate of the error in the integrated input signal. Preferably, and particularly to assist in low demands on computerised sample processing, the samples are spaced throughout the integration period by defining window intervals 25 and taking one or more samples 15′ randomly in each window interval.
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