For monostatic radar measurements of the correlation function in the lower ionosphere, suitably spaced short pulses must be transmitted in order to obtain adequate height resolution. The efficiency of the measurement is greatly increased if several (five or more) pulses, rather than the usual pair, are transmitted with a particular irregular spacing. With this procedure many delays (10 or more) can be studied simultaneously. The increase in number of lags more than compensates for the increase in clutter. Various such multipulse schemes are described and their merits compared. The rather formidable amount of data processing associated with these procedures often cannot be done with a general purpose computer but can easily be handled by special purpose digital devices.