JPS63163474U

JPS63163474U -

Info

Publication number: JPS63163474U
Application number: JP5621787U
Authority: JP
Priority date: 1987-04-14
Filing date: 1987-04-14
Publication date: 1988-10-25

Description

[Brief explanation of the drawing]

第１図ａはこの考案の一実施例によるレーダ受
信装置の目標からの反射電力の受信強度を制御す
る回路を示す機能ブロツク図、第１図ｂは減衰特
性を示す特性図、第２図は従来のレーダ受信装置
の目標からの反射電力の受信強度を制御する回路
を示す機能ブロツク図、第３図はレーダ受信装置
で受信する電力及びレーダ内部で発生する熱雑音
電力と距離との関係を示す図である。図において
、１は可変減衰器、２は減衰曲線発生回路、３は
減衰信号、４は自機高度信号、５はレーダ受信信
号、６は増巾受信信号、７は受信機増巾回路であ
る。なお、各図中同一符号は同一又は相当部分を
示す。 FIG. 1a is a functional block diagram showing a circuit for controlling the reception intensity of reflected power from a target in a radar receiving device according to an embodiment of the invention, FIG. 1b is a characteristic diagram showing attenuation characteristics, and FIG. A functional block diagram showing a circuit for controlling the reception strength of reflected power from a target in a conventional radar receiver. FIG. In the figure, 1 is a variable attenuator, 2 is an attenuation curve generation circuit, 3 is an attenuation signal, 4 is an own aircraft altitude signal, 5 is a radar reception signal, 6 is an amplified reception signal, and 7 is a receiver amplification circuit. . Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A receiving device for receiving reflected signals from a target, which constitutes an airborne radar system, includes a variable attenuator for controlling the strength of the received signal, and a curved signal that determines the attenuation characteristics of the attenuation amount of the variable attenuator. What is claimed is: 1. A radar receiving device characterized in that a circuit system for controlling the attenuation start distance of the attenuation characteristic curve based on the altitude information of the own aircraft is added to the generating circuit.