
-phase Codes are described which have an autocorrelation function with one main peak and very small side peaks. With

phases an

long pulse sequence is generated. Properties have been verified for

up to

and a rule for main peak-to-side-peak ratio is conjectured for larger

. For

greater than

. the ratio is substantially better than the best ratios which have been shown for binary bipolar codes. Doppler shift effects appear to be similar to those of linear FM radar pulse compression.