JPH0275587U

JPH0275587U -

Info

Publication number: JPH0275587U
Application number: JP15416188U
Authority: JP
Priority date: 1988-11-26
Filing date: 1988-11-26
Publication date: 1990-06-08

Description

[Brief explanation of drawings]

第１図はこの考案の実施例を示す構成図、第２
図はこの考案のデフルータ回路の詳細な構成図、
第３図は送信周波数のスキヤン方法を示した図、
第４図はヒツト毎に異なる反射エコーと、それら
をデフルータ回路に通した波形を示す図、第５図
は従来のレーダ装置の構成図、第６図は従来のデ
フルータ回路図、第７図は非同期パルスをデフル
ータ回路に通したときの波形図である。図に於て１は送受信共用のアンテナ、２はエキ
サイタ部、３はサーキユレータ、４は受信機部、
５はローカル信号発生部、６は信号処理部、７は
デフルータ回路、８はデジタル化された信号、９
はスレツシヨルド回路、１０は比較回路、１１―
ａ〜１１―ｅは遅延回路、１２―ａ〜１２―ｅは
不一致回路、１３はゲート回路、１４―ａ〜１４
―ｅは切り換え回路、１５は１ヒツト目、１６は
２ヒツト目、１７は３ヒツト目、１８は４ヒツト
目、１９は５ヒツト目の反射エコー、２０〜２４
はそれらに対応した比較回路出力、２５はデフル
ータ回路出力、２６〜２９は１〜４ヒツトまでの
信号と非同期パルス入力、３０は従来のデフルー
タ出力、３１はこの考案によるデフルータ出力、
３２はターゲツト信号、３３は非同期信号である
。なお、図中同一あるいは相当部分には同一符号
を付してある。 Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2
The figure shows a detailed configuration diagram of the defruter circuit of this invention.
Figure 3 is a diagram showing the transmission frequency scanning method.
Figure 4 is a diagram showing the reflected echoes that differ from person to person and the waveforms of those passed through a defruter circuit, Figure 5 is a configuration diagram of a conventional radar device, Figure 6 is a conventional defruter circuit diagram, and Figure 7 is It is a waveform diagram when an asynchronous pulse is passed through a defruter circuit. In the figure, 1 is an antenna for both transmitting and receiving, 2 is an exciter section, 3 is a circulator, 4 is a receiver section,
5 is a local signal generation section, 6 is a signal processing section, 7 is a defruter circuit, 8 is a digitized signal, 9
is a threshold circuit, 10 is a comparison circuit, 11-
a to 11-e are delay circuits, 12-a to 12-e are mismatch circuits, 13 is a gate circuit, 14-a to 14
- e is the switching circuit, 15 is the 1st hit, 16 is the 2nd hit, 17 is the 3rd hit, 18 is the 4th hit, 19 is the reflected echo of the 5th hit, 20 to 24
are the corresponding comparison circuit outputs, 25 is the defruter circuit output, 26 to 29 are the input signals of 1 to 4 hits and asynchronous pulses, 30 is the conventional defruter output, 31 is the defruter output according to this invention,
32 is a target signal, and 33 is an asynchronous signal. Note that the same or corresponding parts in the figures are given the same reference numerals.

Claims

[Scope of utility model registration request]

In a radar device that has the function of searching or tracking a target, there is an antenna for both transmitting and receiving that emits transmitted radio waves to the outside and receives reflected waves from the target, a circulator that isolates transmitting and receiving, and a circulator used for transmitting. The exciter section has several types of stabilizing oscillators with fixed frequencies within the variable frequency range, and sequentially creates power pulses with different frequencies by switching and using these stabilizing oscillators in turn for each hit. , converts the input from the above antenna into an intermediate frequency signal,
a receiver section that amplifies the signal and outputs it as a video signal; a local signal generation section that receives the signal from the exciter section and generates a local signal to be used in the receiver section; It consists of a signal processing unit that performs search video detection, angle tracking, distance tracking, etc., and a defruter circuit that has a threshold corresponding to each search mode and correlates the heating direction of the input video corresponding to the frequency that changes sequentially. A radar device characterized by: