公开(公告)号：US4952936B2

公开(公告)日：1995-11-28

申请号：US24253388

申请日：1988-09-12

申请人： BEL TRONICS LTD

发明人： MARTINSON GLEN

IPC分类号： G01S7/02 ,  G01S7/285 ,  H03B25/00 ,  H04B1/28 ,  H01D7/10

CPC分类号： G01S7/022

公开(公告)号：US5146227A

公开(公告)日：1992-09-08

申请号：US695590

申请日：1991-05-03

申请人： Costas Papadopoulos

发明人： Costas Papadopoulos

IPC分类号： G01S7/02

CPC分类号： G01S7/022

摘要： A radar detector including a local oscillator capable of sweeping over a frequency range of sufficient bandwidth to provide a fundamental frequency and, when injected into a multiplier/mixer, harmonics of that fundamental frequency suitable for heterodyning with rf-signals received by an antenna. The heterodyning of the received rf-signals and the local oscillator signal produce an intermediate frequency signal of constant frequency. A sweep controller causes the local oscillator to sweep only through those local oscillator frequencies suitable for heterodyning with those received rf-signals having radio-frequencies which are of interest. The sweep controller causes the sweeping local oscillator not to sweep through those local oscillator frequencies which would heterodyne with received rf-signals that are not of interest.

摘要翻译： 一种雷达检测器，包括能够扫过足够带宽的频率范围以提供基频的本地振荡器，并且当注入到乘法器/混频器中时，该基频的适合于由天线接收的rf信号进行外差的谐波。 接收的rf信号和本地振荡器信号的外差产生恒定频率的中频信号。 扫描控制器使本地振荡器仅扫描适合于与具有感兴趣的射频的接收的rf信号的外差的本地振荡器频率。 扫描控制器使得扫描本地振荡器不会扫过那些本地振荡器频率，这些频率与接收到的不受关注的rf信号进行外差。

公开(公告)号：US5134406A

公开(公告)日：1992-07-28

申请号：US672053

申请日：1991-03-18

申请人： Steven K. Orr

发明人： Steven K. Orr

IPC分类号： G01S7/02

CPC分类号： G01S7/022

摘要： A police radar warning receiver includes a DSP circuit having a correlator, multiple array averager and a peak detector to provide after each sweep of a swept local oscillator respective dynamic thresholds associated with each averager array and against which information from that sweep is evaluated to determine whether to generate an alarm enable indicative of receipt of a police radar signal. The multiple averager arrays allow for different averaging or weighting ratios to maximize sensitivity of the receiver on the one hand and enhance response time on the other rather than trading off one for the other.

摘要翻译： 警察雷达警报接收器包括具有相关器，多阵列平均器和峰值检测器的DSP电路，用于在扫描本地振荡器的每次扫描之后提供与每个平均器阵列相关联的动态阈值，并针对来自该扫描的哪些信息进行评估以确定是否 以产生指示接收警察雷达信号的警报。 多个平均器阵列允许不同的平均或加权比，一方面使接收机的灵敏度最大化，另一方面增强响应时间，而不是为另一个交换。

公开(公告)号：US4952936A

公开(公告)日：1990-08-28

申请号：US242533

申请日：1988-09-12

申请人： Glen Martinson

发明人： Glen Martinson

IPC分类号： G01S7/02

CPC分类号： G01S7/022

摘要： The invention concerns radar detection devices sensitive to signals from various different frequency bands. A broad band antenna is provided, together with a mixer and a plurality of local oscillators. Signals from the local oscillators are mixed one at a time with signals from the antenna, there being one local oscillator signal for each radar frequency or pair of frequencies of interest which may be received by the antenna. Each local oscillator signal is chosen so that when it is mixed with the respective radar frequency signal, an intermediate signal is produced which is the same for all mixtures. This intermediate signal is further down converted and fed to signal processing circuitry to produce an alarm when radar frequencies of interest are detected.

摘要翻译： 本发明涉及对来自各种不同频带的信号敏感的雷达检测装置。 提供宽频带天线以及混频器和多个本地振荡器。 来自本地振荡器的信号一次一个地与来自天线的信号混合，对于每个雷达频率或可能由天线接收的感兴趣的频率对，存在一个本地振荡器信号。 选择每个本地振荡器信号，使得当其与相应的雷达频率信号混合时，产生对于所有混合物相同的中间信号。 当检测到感兴趣的雷达频率时，该中间信号被进一步下变频并馈送到信号处理电路以产生报警。

公开(公告)号：US4949088A

公开(公告)日：1990-08-14

申请号：US396372

申请日：1989-08-21

申请人： Thomas M. Ryan ,  Karen Ryan

发明人： Thomas M. Ryan ,  Karen Ryan

IPC分类号： G01S3/48 ,  G01S7/02

CPC分类号： G01S7/022 ,  G01S3/48

摘要： A system includes units for identifying the location and range of a radar signal source relative to a user's vehicle. The system also includes an alarm unit for signalling if the radar source is within a prescribed distance from the vehicle. A readout and display unit displays selected information from the various units of the system.

摘要翻译： 系统包括用于识别雷达信号源相对于用户车辆的位置和范围的单元。 该系统还包括一个报警单元，用于在雷达源距离车辆一定距离内进行信令。 读出和显示单元从系统的各个单元显示选定的信息。

公开(公告)号：US4862175A

公开(公告)日：1989-08-29

申请号：US162244

申请日：1988-02-29

申请人： Michael A. Biggs ,  James L. Jaeger

发明人： Michael A. Biggs ,  James L. Jaeger

IPC分类号： G01S7/02

CPC分类号： G01S7/022

摘要： A radar warning receiver is provided having a police radar signal band discrimination circuit which generates evaluation signals, the state of which indicates the voltage level relative a threshold voltage of a discriminator output as the local oscillator is swept through the radar bands. The times during which the evaluation signals are in one state or the other are utilized to identify in which band the received signal is operating (e.g., X-band or K-band).

摘要翻译： 提供一种雷达警报接收器，其具有警报雷达信号频带鉴别电路，该电路产生评估信号，其状态指示当本地振荡器扫过雷达频带时鉴别器输出的阈值电压。 评估信号处于一个状态或另一个状态的时间被用于识别接收信号在哪个频带中操作（例如，X频带或K波段）。

公开(公告)号：US4750215A

公开(公告)日：1988-06-07

申请号：US878055

申请日：1986-06-24

申请人： Michael A. Biggs

发明人： Michael A. Biggs

IPC分类号： G01S7/38 ,  G01S7/02 ,  H04B17/00 ,  H04B1/26

CPC分类号： G01S7/022

摘要： A radar warning receiver is provided having a police radar signal detection circuit which generates evaluation signals, the state of which indicates the voltage level relative a threshold voltage of a discriminator output as the local oscillator is swept through the radar band. The times during which the evaluation signals are in one state or the other are utilized to identify whether the received signal is from a fixed frequency (e.g., police radar) source or a variable frequency source (e.g., spurious signals).

摘要翻译： 提供雷达警报接收器，其具有警报雷达信号检测电路，其产生评估信号，其状态指示当本地振荡器扫过雷达频带时鉴别器输出的阈值电压的电压电平。 评估信号处于一个状态或另一个状态的时间被用于识别接收的信号是来自固定频率（例如警察雷达）源还是可变频率源（例如，杂散信号）。

公开(公告)号：US4686499A

公开(公告)日：1987-08-11

申请号：US838931

申请日：1986-03-12

申请人： Gregory R. Furnish

发明人： Gregory R. Furnish

IPC分类号： G01S7/02 ,  H05K1/18 ,  H05K5/02 ,  H05K7/12

CPC分类号： G01S7/022

摘要： A compact police radar warning receiver is provided having an antenna in which some of the mixer and oscillator components are secured to the antenna by a cantilever structure formed integral the circuit board overlying a portion of the antenna and to which the components are electrically and mechanically coupled.

摘要翻译： 提供了一种紧凑型警察雷达警报接收器，其具有天线，其中一些混频器和振荡器部件通过悬臂结构固定到天线，所述悬臂结构形成在电路板的整体上，覆盖在天线的一部分上，并且部件被电和机械耦合 。

公开(公告)号：US4668952A

公开(公告)日：1987-05-26

申请号：US648537

申请日：1984-09-06

申请人： Kazuyoshi Imazeki ,  Seizi Koyama

发明人： Kazuyoshi Imazeki ,  Seizi Koyama

IPC分类号： G01S7/02 ,  G01S7/42

CPC分类号： G01S7/022

摘要： A radar detecting system comprises an antenna for receiving radar signals, a sweep generator for producing a sweep signal over a predetermined range of frequencies and at a predetermined rate and a mixer for mixing the sweep signal with the received radar signal for producing intermediate frequency (IF) signals. A bandpass filter passes only those IF signals within a predetermined frequency band and a detector responds to the IF signals passed by the bandpass filter by producing corresponding output pulses. A control circuit is responsive to a pair of output pulses being produced for each of three successive cycles of the sweep signal and to both the first pulse and the second pulse of each pair of pulses occurring at the same time intervals respectively relative to the corresponding cycle of the sweep signal for producing a warning signal. An alarm circuit comprises a signal strength detector for producing a DC signal having an amplitude which varies in a predetermined fashion in accordance with the level of the received signal and a voltage-to-frequency converter reponsive to the DC signal for producing an alarm signal alternating between a first level and a second level at a frequency which varies in a predetermined fashion in accordance with the amplitude of the DC signal.

摘要翻译： 雷达检测系统包括用于接收雷达信号的天线，用于在预定频率上以预定速率产生扫频信号的扫描发生器，以及用于将扫描信号与所接收的雷达信号混合以产生中频（IF ）信号。 带通滤波器仅通过预定频带内的那些IF信号，并且检测器通过产生相应的输出脉冲来响应由带通滤波器通过的IF信号。 控制电路响应于对扫描信号的三个连续周期中的每一个产生的一对输出脉冲以及相对于相应周期分别以相同时间间隔发生的每对脉冲的第一脉冲和第二脉冲两者产生 用于产生警告信号的扫描信号。 报警电路包括信号强度检测器，用于产生具有根据接收信号的电平以预定方式变化的幅度的DC信号，以及代表DC信号的电压 - 频率转换器，用于产生交替的报警信号 在按照DC信号的幅度以预定方式变化的频率在第一电平和第二电平之间。

公开(公告)号：US4631542A

公开(公告)日：1986-12-23

申请号：US656029

申请日：1984-09-28

申请人： Richard L. Grimsley

发明人： Richard L. Grimsley

IPC分类号： G01S7/02 ,  G01S7/40 ,  G08B7/00 ,  H04B17/00

CPC分类号： G01S7/022

摘要： A radar warning receiver is provided having an alarm indicator responsive to an electronic switch, the switch being activated and energizing the alarm in response to an alarm signal indicating the presence of a police radar signal, the switch being deactivated and de-energizing the alarm in response to a mute signal occurring during the occurrence of the alarm signal, the switch remaining deactivated until the alarm condition signal terminates and subsequently reoccurs.

摘要翻译： 雷达警报接收器具有响应于电子开关的报警指示器，该开关被激活并且响应于指示警察雷达信号的存在的报警信号来激励报警器，该开关被去激活并使该报警器断电 响应在发生报警信号期间发生的静音信号，开关保持停用，直到报警条件信号终止并随后再次出现。