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1. 发明授权

US3905031A Data processor for a doppler radar mapping system using a synthesized antenna array 失效
公开(公告)号：US3905031A
公开(公告)日：1975-09-09
申请号：US37423664
申请日：1964-06-08
申请人： HUGHES AIRCRAFT CO
发明人： MCCORD HENRY L
IPC分类号： G01S13/90 , G01S7/06 , G01S9/02 , G01S9/44
CPC分类号： G01S13/9011
摘要： 12. A focused mapping system operable to map a range interval from a craft moving in azimuth relative to objects being mapped comprising, in combination, coherent radar means for developing a plurality of frequency varying Doppler signals having frequency and time characteristics representative of the position of the moving craft; means for recording said Doppler signals received over said range interval in the form of parallel line traces along the range dimension, the information from each range forming separable range elements; reading means coupled to said recording means for sequentially scanning successive range elements to develop Doppler history signals; control means coupled to said reading means for developing a first sweep signal having a duration so said reading means scans a portion of said traces in a direction substantially orthogonal thereto to form a range element and for developing a second sweep signal so said reading means sequentially scans successive range element for developing informational signals having frequency components proportional to the recorded Doppler signals; mixing means coupled to said reading means; swept oscillator means coupled to said mixing means; variable gain means coupled to said swept oscillator means and to said control means, said variable gain means being responsive to said first and second sweep signals to develop a reference function having a predetermined rate of change of frequency during each of said first sweep signals, said predetermined rate during any one of said first sweep signals being different from the preceding and succeeding sweep signals to provide all range focusing, said mixing means developing a difference frequency representative of the azimuth position of said objects; filter means including a plurality of narrow-band filters coupled to said mixing means for passing predetermined spaced apart frequency bands of said difference frequencies; detector means coupled to each of said narrow-band filters for developing display signals in response to components of said difference frequency falling within said spaced apart frequency bands being passed through said filter means; output means including a cathode ray tube, means for deflecting the electron beam thereof in synchronism with said reading means, and means for intensity modulating said electron beam; and switching means coupled between said output means and said detector means for commutating display signals to the intensity modulating means of said output means to develop a two-dimensional indication of the objects within said area being mapped.

2. 发明授权

US3703005A Radar signal phase correction 失效
标题翻译：雷达信号相位校正
公开(公告)号：US3703005A
公开(公告)日：1972-11-14
申请号：US3703005D
申请日：1965-06-21
申请人： HUGHES AIRCRAFT CO
发明人： HERMAN ELVIN E , LYM VERNON W , MCCORD HENRY L
IPC分类号： G01S7/288 , G01S13/534 , G01S7/28 , G01S9/02
CPC分类号： G01S7/288 , G01S13/534
摘要： 19. In a radar circuit of the type including a transmitter section having a circuit for generating and transmitting pulsed rf oscillatory signals, a receiver section having a circuit for detecting echo signals, the combination therewith of: a means for generating a clock reference signal; means coupled to receive a portion of the pulsed rf oscillator signals generated by the transmitter and coupled to receive the clock reference signal for detecting phase differences between the transmitted signal and the clock reference signal and for generating an error signal that is proportional to a function of the detected phase differences therebetween; means coupled to receive the error signal for storing the received error signal during the interpulsed period between transmitted pulse signals; a stable local oscillator means in the receiving section for generating a c-w output signal; phase shifter means coupled to receive the stable local oscillator output signal and to receive the error signal for phase shifting the local oscillator output signal to remove phase variations in the local oscillator output signal relative to the transmitted signal resulting from rf starting phase variations in the transmitted pulses; and means for receiving the echo signals and for receiving the phase shifted local oscillator signals for producing a coherent echo signal.

3. 发明授权

US3680099A Non-coherent radar system with means to correct the phase of the return signal 失效
标题翻译：非相干雷达系统，用于纠正返回信号的相位
公开(公告)号：US3680099A
公开(公告)日：1972-07-25
申请号：US3680099D
申请日：1965-06-21
申请人： HUGHES AIRCRAFT CO
发明人： HERMAN ELVIN E , MCCORD HENRY L
IPC分类号： G01S7/288 , G01S13/534 , G01S9/42
CPC分类号： G01S7/288 , G01S13/534
摘要： A pulsed radar including a phase detector connected to detect rf phase variations between transmitted pulses and a stable clock signal for generating an error signal which is fed to a phase shifter which, in turn, is connected in circuit between the radar receiver and a c-w reference signal generator for shifting the phase of the echo signal relative to the c-w reference signal for removing the relative phase variation between the echo signal and the c-w reference signal resulting from random starting phase variation in the transmitted signals.
摘要翻译：脉冲雷达包括相位检测器，其连接以检测发射脉冲之间的rf相位变化和用于产生误差信号的稳定时钟信号，该误差信号被馈送到移相器，该移相器又连接在雷达接收器和cw参考电路之间的电路中信号发生器，用于相对于cw参考信号移位回波信号的相位，以消除由发射信号中的随机开始相位变化产生的回波信号和cw参考信号之间的相对相位变化。

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