Apparatus for rejecting radar signal noises专利检索-掩蔽信号信号信号处理专利检索查询-专利查询网

Apparatus for rejecting radar signal noises

阅读：316发布：2022-07-31

专利汇可以提供Apparatus for rejecting radar signal noises专利检索，专利查询，专利分析的服务。并且In a marine radar equipment, an apparatus for rejecting radar signal noises without missing targets which comprises, in combination, an automatic video level setting circuit, wave form selecting circuit and coincidence checking circuit. These circuits, in combination, are effective in rejecting white noises due to the nature of water waves and especially in preventing target signals from being masked by back scattering sea clutter noises generated in short distance regions when the sea is rough.，下面是Apparatus for rejecting radar signal noises专利的具体信息内容。

权利要求

1. In a receiver of a marine radar equipment, radar signal noise rejection processing apparatus comprising: a circuit which rectifies intermediate-frequency video signal supplied from an intermediate-frequency amplification stage of said receiver, thereby to obtain a DC component corresponding to an envelope of white noises contained in said complex signals; an AGC bias voltage generator circuit which includes M (several) circuits which slice said DC component with M stages of voltage levels, sample the respective sliced outputs at every distance corresponding to a period of clock pulses and turn them into digitalized signals in the binary number based on the presence and absence of signals, M shift registers which write and store, shift, and read out and output said digitalized signals of the respective stages over the entire distance ranges for one sweep period under control of said clock pulses, M shaping circuits which shape the digitalized pulse outputs read out from the respective shift registers, thereby to turn them into a DC output form of an analog quantity, and a summing circuit which combines outputs of the respective shaping circuits in level, to prepare a bias voltage for AGC; a variable-gain intermediate-frequency amplifier which has its gain controlled by the output voltage of said AGC bias voltage generator circuit and which amplifies said intermediate-frequency video signals; a detector circuit which detects an output of said variable-gain intermediate-frequency amplifier into video signals; a signal checking circuit, being known, in which slices the video signal outputs of said detector circuit with a fixed threshold value, to eliminate noises below the value and thereafter turn said video signal outputs into digitalized signals in the binary number based on the presence and absence of signals, and which extracts from among said digitalized signals only those consistently existing at identical distances every time in several times of sweeps; a circuit which generates said clock pulses having the period corresponding to a unit distance; and an instruction pulse generator circuit which is started by a master trigger pulse of said radar equipment and is synchronized with said clock pulses, and which generates gated clock pulses transmitted only during a sweep period and distance gate pulses indicating completions of respective distance regions with the whole sweep distance divided into N (several) regions.

2. The radar signal noise rejection processing apparatus according to claim 1, characterized in that a wave-form discriminating circuit is connected between said detector circuit and said signal checking circuit, said wave-form discriminating circuit comprising N matched filters which have target-signal extracting characteristics adapted for said respective distance regions witH the whole sweep distance divided into N stages and which serve to extract target signals at said respective distance regions of said video signals of said detector circuit, and a circuit which adds the outputs of said N matched filters in distance.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
基于非共面H型谐振器和蟹腿型支撑梁的双轴体微机械谐振式加速度计	2020-05-08	40
开关转换器及其控制电路、使用它的照明装置、电子设备	2020-05-12	125
运输工具的发光窗玻璃及其制造	2020-05-08	813
电子电路对边信道攻击的抵抗的检验	2020-05-11	589
机芯、电子钟表以及电机驱动控制方法	2020-05-12	975
变压器特高频局部放电信号模式识别方法与装置	2020-05-08	316
联合多种情景模式的自适应定位方法	2020-05-08	798
存储器装置及其操作方法	2020-05-11	550
半导体器件	2020-05-11	192
存储器件的缓冲器控制电路	2020-05-12	486

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

掩蔽信号热门专利

热门分类

Apparatus for rejecting radar signal noises

该功能需要专业版企业版VIP权限，您可以：