公开(公告)号：US4656480A

公开(公告)日：1987-04-07

申请号：US671663

申请日：1984-11-15

申请人： Roland Allezard ,  Jean-Luc Degouy

发明人： Roland Allezard ,  Jean-Luc Degouy

IPC分类号： G01S7/40 ,  G01S13/44 ,  G01S13/68

CPC分类号： G01S7/4056 ,  G01S13/44 ,  G01S2007/406

摘要： The radar comprises in known manner a transmitter (1), a transmitting antenna (E.sub.1), two receiving antennas (R.sub.1,R.sub.2), mixers (6,7) and means for processing the subtractive beat signals supplied by the mixers for effecting detection of the bearing of a target (10) and of the range and/or the relative velocity of the target. According to the invention, a target simulator is provided to correct the phase errors of electrical and mechanical origins. The simulator comprises a transmission circuit including a modulator (11) and a simulated target echo transmission antenna (E.sub.2) which transmits towards the receiving antenna. The radar also includes means for processing a beat signal derived from the simulated echo and for effecting detection of the simulated target bearing and means for correcting phase errors.

摘要翻译： 该雷达以已知的方式包括发射机（1），发射天线（E1），两个接收天线（R1，R2），混频器（6,7）和用于处理由混频器提供的减法拍频信号的装置，用于实现 目标（10）的轴承以及目标的范围和/或相对速度。 根据本发明，提供了一种目标模拟器来校正电气和机械起源的相位误差。 模拟器包括发射电路，其包括向接收天线发射的调制器（11）和模拟目标回波发射天线（E2）。 雷达还包括用于处理从模拟回波得到的拍频信号并用于实现模拟目标轴承的检测和用于校正相位误差的装置的装置。

公开(公告)号：US4958161A

公开(公告)日：1990-09-18

申请号：US374516

申请日：1989-06-29

申请人： Roland Allezard

发明人： Roland Allezard

IPC分类号： G01S13/34 ,  G01S13/88

CPC分类号： G01S13/345 ,  G01S13/343 ,  G01S13/882

摘要： The radar system of the FM/CW type transmits a wave which has a virtually linear frequency, between two frequencies f.sub.1 and f.sub.2 and supplies a first beat signal (Fb.sub.1) between transmitted and received waves; it is suitable for measuring the altitude h by measuring the overall phase rotation. According to the invention the radar supplies a second beat signal (Fb.sub.2) in quadrature with the first signal; the signals Fb.sub.1 and Fb.sub.2 are digitized (23 to 26) and comparing means (36) compare the consecutive samples of Fb.sub.1 and Fb.sub.2, then calculating means (37) derive therefrom by means of successive increments/decrements the number of zero crossings of the phase plane in a predetermined direction minus the number of zero crossings in the opposite direction (result m). The calculated altitude h is proportional to m.

摘要翻译： FM / CW型雷达系统在两个频率f1和f2之间传输具有虚拟线性频率的波，并且在发射波和接收波之间提供第一拍频信号（Fb1）; 它适用于通过测量整个相位旋转来测量高度h。 根据本发明，雷达提供与第一信号正交的第二拍频信号（Fb2）; 信号Fb1和Fb2被数字化（23至26），比较装置（36）比较Fb1和Fb2的连续样本，然后通过连续递减递减相位的零交叉数的计算装置（37） 平面在预定方向减去相反方向的零交叉数（结果m）。 计算出的高度h与m成比例。

公开(公告)号：US4912474A

公开(公告)日：1990-03-27

申请号：US271558

申请日：1988-11-15

申请人： Serge Paturel ,  Roland Allezard

发明人： Serge Paturel ,  Roland Allezard

IPC分类号： G01S13/34 ,  G01S13/42 ,  G01S13/89 ,  H01Q3/22

CPC分类号： H01Q3/22 ,  G01S13/343 ,  G01S13/426 ,  G01S13/89

摘要： The sensor (1), of the FM-CW type, comprises a transceiver aerial (2) which is rigidly attached to the support of the sensor and is of the frequency scanned beam steering type. The sensor radiates a frequency F of several GHz according to a sawtooth pattern which is nearly linear, generates a beat signal (F.sub.b) between a transmitted wave and a received wave an comprises an analog processing circuit (17) for the signal F.sub.b, digitizing means for F.sub.b (22), memories for time-division samples (28) and frequency-division samples (33), and digital processing means (31) transforming sequences (SU) of time-division samples into sequences (SV) of frequency-division samples. The order number of each sequence is representative of a strip of pixels of the map and the order number of a sample in a sequence is representative of a distance of a pixel on the map.

摘要翻译： FM-CW型的传感器（1）包括收发器天线（2），其刚性地附接到传感器的支撑件并且是频率扫描的光束操纵型。 传感器根据几乎线性的锯齿形图案发射几GHz的频率F，在发射波和接收波之间产生拍频信号（Fb）包括用于信号Fb的模拟处理电路（17），数字化装置 对于Fb（22），时分采样（28）和分频采样（33）的存储器和数字处理装置（31）将时分样本的序列（SU）变换为频分序列（SV） 样品。 每个序列的顺序号表示地图的像素条，并且序列中的样本的序号代表地图上像素的距离。

公开(公告)号：US4208659A

公开(公告)日：1980-06-17

申请号：US956766

申请日：1978-11-01

申请人： Roland Allezard

发明人： Roland Allezard

IPC分类号： G01S13/34 ,  G01S13/94 ,  G08G5/04 ,  G01S9/24

CPC分类号： G01S13/94 ,  G01S13/343

摘要： This detection system of the radar type transmits a sawtooth-shaped frequency-modulated centimeter wave. The wave reflected by an obstacle, if any, is received by two fixed receiving antennas, each of these receiving antennas being connected to a circuit for processing the received signal. The phase shift between the waves is a measure for the angle .theta. formed between the path of flight of the aircraft and the straight line which connects the aircraft with the obstacle. Said phase shift is analyzed in an output circuit of the detection device which also comprises a control loop for controlling the amplitude of the beat-frequency signal between the transmitted signal and the received signal, a synthesizing circuit for a signal fan creating a range window by demodulation of the beat-frequency signal by means of the synthesized signal, a Doppler effect tracking loop and a circuit for analyzing the leading edge of the Doppler effect in the demodulated and filtered signal. In the case of an obstacle which is substantially directly in the direction of flight, last-mentioned circuit produces an information which possibly evaluates the information with respect to the angle .theta. and which is already present in the output circuit, in response whereto an alarm circuit becomes operative.

摘要翻译： 这种雷达类型的检测系统传输锯齿形的调频厘米波。 由障碍物反射的波（如果有的话）由两个固定接收天线接收，这些接收天线中的每一个连接到用于处理接收信号的电路。 波之间的相移是飞行器的飞行路线与连接飞机与障碍物的直线之间形成的角度θ的度量。 所述相移在检测装置的输出电路中进行分析，该检测装置的输出电路还包括用于控制发送信号与接收信号之间的拍频信号的振幅的控制回路，用于信号风扇的合成电路，通过 通过合成信号解调拍频信号，多普勒效应跟踪环路和用于分析解调和滤波信号中多普勒效应前沿的电路。 在基本上直接在飞行方向上的障碍物的情况下，最后提到的电路产生可能评估相对于角度θ的信息并且已经存在于输出电路中的信息的信息，作为对报警电路 变得有效。