JPH02118882U

JPH02118882U -

Info

Publication number: JPH02118882U
Application number: JP2770689U
Authority: JP
Priority date: 1989-03-10
Filing date: 1989-03-10
Publication date: 1990-09-25

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す図、第２図
は従来のスペクトラム拡散レーダ装置を示す図で
ある。図において、１は信号発生器、２はτ秒のタイ
ミング発生器、３はコード発生器、４は０゜−１
８０゜位相変調器、５は電力増幅器、６は送信用
空中線、７は受信用空中線、８は周波数変換器、
９は中間周波増幅器、１０は分周器、１１はｎビ
ツトシフトレジスタ、１２は中間周波信号、１３
は復調信号１、１４は復調信号２、１５は復調信
号ｎ、１６は０゜−１８０゜位相復調器、１７は
積分器１、１８は積分器２、１９は積分器ｎ、２
０は検波信号１、２１は検波信号２、２２は検波
信号ｎ、２３は合成器、２４は表示器、２５はス
イツチ、２６はスイツチ、２７は増幅器である。
なお、各図中同一符号は同一または相当部を示す
。 FIG. 1 is a diagram showing an embodiment of this invention, and FIG. 2 is a diagram showing a conventional spread spectrum radar device. In the figure, 1 is a signal generator, 2 is a τ second timing generator, 3 is a code generator, and 4 is 0°-1
80° phase modulator, 5 is a power amplifier, 6 is a transmitting antenna, 7 is a receiving antenna, 8 is a frequency converter,
9 is an intermediate frequency amplifier, 10 is a frequency divider, 11 is an n-bit shift register, 12 is an intermediate frequency signal, 13
are demodulated signal 1, 14 is demodulated signal 2, 15 is demodulated signal n, 16 is 0°-180° phase demodulator, 17 is integrator 1, 18 is integrator 2, 19 is integrator n, 2
0 is a detection signal 1, 21 is a detection signal 2, 22 is a detection signal n, 23 is a synthesizer, 24 is a display, 25 is a switch, 26 is a switch, and 27 is an amplifier.
Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

a signal generator for generating the carrier wave of the radar transmitter and the local signal of the radar receiver;
A timing generator that generates a timing of n seconds (n is a natural number) and a timing of τ seconds
A code generator that generates a pseudo-noise code consisting of n bits per period in bits τ seconds, and a
0°-180 with 180° phase modulation
a phase modulator; a power amplifier that amplifies the output of the 0°-180° phase modulator to a required power;
A transmitting antenna emits the transmitted signal output from this power amplifier into the air, a receiving antenna captures the reflected wave from the target as a received signal, and the received signal and local signal are mixed and converted into an intermediate frequency signal. A frequency converter that generates a signal, an intermediate frequency amplifier that amplifies the intermediate frequency signal to the required power, the pseudo noise code and the timing signal of τ seconds from the timing generator are input, and the pseudo noise code is generated by 1 bit every τ seconds. An n-bit shift register that can shift and take out signals from each bit, the above-mentioned τ/n seconds timing signal, and n signals of the above-mentioned n-bit shift register are input, and one bit of this τ/n seconds timing signal is inputted. A switch that sequentially selects one adjacent signal among the n signals of the n-bit shift register each time it is input, and a switch that performs 0° and 180° phase demodulation using the output of this switch.
It has one input terminal and n output terminals into which the output of the 0°-180° demodulator and the above τ/n seconds timing signal are input, and the above τ/n seconds timing signal is inputted to the 0°-180° demodulator. A switch that sequentially selects adjacent terminals from n output terminals one by one and connects them to the input terminals each time one bit of a timing signal is input, and n integrators connected to each of these output terminals. and input the outputs of these n integrators,
A radar device comprising: a combiner for combining signals into one signal; an amplifier to which the output of the combiner is input; and a display to which the output of the amplifier is input.