Correction of errors in p.r.b.n. identification

When fitting a continuous model to p.r.b.n. results, there are several sources of error. The letter deals with the incorporation of interclock sampling and folding-error corrections for the normal m sequence, the maximally orthogonal sequence and the modified m sequence. It further shows how to correct for d.c. offset errors and for bias and ripple in the autocorrelation function where they occur. A comparison is made between the three sequences using an analogue model and the advantages of each sequence are pointed out.