Title: Doppler frequency impulse radar system with displaced pulse sequence

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Claims: I claim:

1. A doppler frequency impulse radar system, comprising a transmitting circuit for transmitting an impulse modulated carrier wave and a receiving circuit for receiving reflected echo impulses, said transmitting circuit including means for transmitting a first pulse sequence and means for transmitting a second pulse sequence having identical period durations, means for effecting a time displacement between the transmission of the respective pulse sequences which displacement is so selected that periodically recurring gaps appear in the spectral line spectrum of the transmitted signals, and doppler frequency filters operatively disposed in the signal path of the receiving circuit having a pass range corresponding to at least one of said gaps and having a pass width which is somewhat smaller than the width of a gap.

Other info:

Inventors: Wiedemann, Kurt (Munich, DT)

Application Number: 116431
Filing Date: 1961-06-12
Publication_date: 1976-04-13
Assignee: Siemens Aktiengesellschaft (DT)
Primary Class(es): 342/202 342/137, 342/163
Other Classes:
US Patent Ref:

2746033	May, 1956	Bachmann	343/7.
2840808	Jun, 1958	Woodward	343/7.
2896203	Jul, 1959	Wright	343/7.
2933725	Apr, 1960	Wright	343/7.
3008138	Nov, 1961	Berger	343/7.
3029428	Apr, 1962	Matthews	343/11.
3031659	Apr, 1962	Le Parquier	343/17.
3169243	Feb, 1965	Kuhrdt	343/17.
3230528	Jan, 1966	Van Den Broek et al.	343/7.

Other Refs:
Primary Examiner: Tubbesing, T. H.
Assistant Examiner:
Attorney: Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson