JPH0434678U

JPH0434678U -

Info

Publication number: JPH0434678U
Application number: JP7675190U
Authority: JP
Priority date: 1990-07-19
Filing date: 1990-07-19
Publication date: 1992-03-23

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例を示す図、第２図は
この考案の別の実施例を示す図、第３図はこの考
案のさらに別の実施例を示す図、第４図はこの考
案の動作を説明するためのスペクトルの図、第５
図は従来から用いられている複数チヤンネルを有
するレーダ装置を示す図、第６図は複数チヤンネ
ルを有するレーダ装置のチヤンネル間の干渉を説
明する図、第７図は第５図のレーダ装置における
電波干渉を説明するスペクトルの図である。図中、１はアンテナ、２は送受切換器、３は送
信機、４は受信機、５は移動目標表示装置（ＭＴ
Ｉ）、６は送信制御器、７は発振器、８はミキサ
、９はフイルタ、１０はカウンタ、１１は安定化
局部発振器、１２は周波数逓倍器、１３は送信波
発生器、１４は構造物、ｆ１は第１チヤンネルの
送信周波数、ｆ２は第２チヤンネルの送信周波数
、ＰＲＦは送信繰り返し周波数、ｆＡはチヤンネ
ル間の送信周波数の差、ｆｓは送信搬送波、ｆｃ
１およびｆｃ２は周波数逓倍器の出力周波数を示
す。なお、図中同一あるいは相当部部には同一符
号を付して示してある。 Figure 1 is a diagram showing an embodiment of this invention, Figure 2 is a diagram showing another embodiment of this invention, Figure 3 is a diagram showing still another embodiment of this invention, and Figure 4 is a diagram showing another embodiment of this invention. Spectral diagram for explaining the operation of
The figure shows a conventionally used radar device with multiple channels, FIG. 6 is a diagram explaining interference between channels of a radar device with multiple channels, and FIG. 7 shows radio waves in the radar device of FIG. It is a diagram of a spectrum explaining interference. In the figure, 1 is an antenna, 2 is a transmitter/receiver switch, 3 is a transmitter, 4 is a receiver, and 5 is a moving target display device (MT
I), 6 is a transmission controller, 7 is an oscillator, 8 is a mixer, 9 is a filter, 10 is a counter, 11 is a stabilizing local oscillator, 12 is a frequency multiplier, 13 is a transmission wave generator, 14 is a structure, f1 is the transmission frequency of the first channel, f2 is the transmission frequency of the second channel, PRF is the transmission repetition frequency, fA is the difference in transmission frequency between channels, fs is the transmission carrier, fc
1 and fc2 indicate the output frequency of the frequency multiplier. In the drawings, the same or corresponding parts are designated by the same reference numerals.

Claims

[Claims for Utility Model Registration] (1) A first transmitter that amplifies a transmitted signal, a first antenna that transmits the output of the first transmitter, and a first antenna that demodulates reflected waves received by the first antenna. a first radar system comprising a first receiver, a first moving target display device for suppressing a fixed target from the output of the first receiver; a second transmitter for amplifying a transmitted signal; A second antenna that transmits the output of the transmitter, a second receiver that demodulates the reflected wave received by the second antenna, and a second moving target display device that suppresses a fixed target from the output of the second receiver. and a transmission controller that sends a transmission frequency signal and a modulation signal based on a transmission repetition frequency to the first radar system and the second radar system. (2) a first transmitter that amplifies the transmitted signal; a first antenna that transmits the output of the first transmitter; a first receiver that demodulates the reflected wave received by the first antenna; a first radar system comprising a first moving target display device that suppresses a fixed target from the output of the receiver; a second transmitter that amplifies the transmitted signal; and a second radar system that transmits the output of the second transmitter. a second antenna, a second receiver that demodulates reflected waves received by the second antenna, and a second moving target display device that suppresses fixed targets from the output of the second receiver. the first radar system, a first oscillator and a second oscillator that generate a transmission frequency, a mixer and a filter that determine the frequency difference between the oscillators, and a counter that counts the filter output and generates a transmission repetition frequency; A radar apparatus comprising a transmission controller that sends a transmission frequency signal and a modulation signal based on a transmission repetition frequency to a second radar system. (3) a first transmitter that amplifies the transmitted signal; a first antenna that transmits the output of the first transmitter; a first receiver that demodulates the reflected wave received by the first antenna; a first radar system comprising a first moving target display device that suppresses a fixed target from the output of the receiver; a second transmitter that amplifies the transmitted signal; and a second radar system that transmits the output of the second transmitter. a second antenna, a second receiver that demodulates reflected waves received by the second antenna, and a second moving target display device that suppresses fixed targets from the output of the second receiver. system and a stabilized local oscillator that generates the transmit carrier wave,
A counter that generates a transmission repetition frequency, a first multiplier and a second multiplier that multiply the transmission repetition frequency, a first mixer that mixes the output of the first multiplier and the transmission carrier wave, and a second multiplier. a second mixer that mixes the output of the transmitter and the transmission carrier wave, and includes a transmission controller that sends a transmission frequency signal and a modulation symbol based on the transmission repetition frequency to the first radar system and the second radar system. radar equipment.