JPS6142446B2 - - Google Patents
Info
- Publication number
- JPS6142446B2 JPS6142446B2 JP12445679A JP12445679A JPS6142446B2 JP S6142446 B2 JPS6142446 B2 JP S6142446B2 JP 12445679 A JP12445679 A JP 12445679A JP 12445679 A JP12445679 A JP 12445679A JP S6142446 B2 JPS6142446 B2 JP S6142446B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency
- serodyne
- output
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000001228 spectrum Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B29/00—Generation of noise currents and voltages
Landscapes
- Amplifiers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
【発明の詳細な説明】
この発明は、受信信号を用いてこれを虚飾した
雑音信号を発生する雑音信号発生装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a noise signal generator that uses a received signal to generate a noise signal that disguises the received signal.
従来この種の装置として第1図のものがあつ
た。図において、1は受信アンテナ、2は受信回
路で、所定の受信信号を捕捉し、この受信信号の
周波数に対応した信号電圧(例えば、デイスクリ
ミネータ出力)を発生するもの、3は白色雑音発
生器(以下、NGという)で、白色雑音を発生す
るもの、4は低域フイルタ(以下、LPFという)
で、前記白色雑音に対し所定の帯域制限を行なう
もの、5はオフセツト電圧発生器で所定のオフセ
ツト電圧を発生するもの、7は電圧制御発振器
(以下VCOという)で印加電圧によつて発振周波
数が制御されるもの、8は高周波増幅器(以下
RFAという)で前記VCO7の出力信号を所定レ
ベルまで増幅するものである。 A conventional device of this type is the one shown in FIG. In the figure, 1 is a receiving antenna, 2 is a receiving circuit that captures a predetermined received signal and generates a signal voltage (for example, a discriminator output) corresponding to the frequency of this received signal, and 3 is a white noise generator. 4 is a low-pass filter (hereinafter referred to as LPF) that generates white noise.
5 is an offset voltage generator that generates a predetermined offset voltage, and 7 is a voltage controlled oscillator (hereinafter referred to as VCO) that controls the oscillation frequency depending on the applied voltage. What is controlled, 8 is a high frequency amplifier (hereinafter referred to as
The output signal of the VCO 7 is amplified to a predetermined level using an RFA (referred to as RFA).
第1図の従来の雑音信号発生装置の各部の信号
を第3図に示す。第3図aは受信回路2への入力
信号の電力スペクトラム、bは受信回路2の出力
で受信信号周波数に対応した信号電圧、cはNG
3の出力電圧、eはLPF4の出力の電力スペクト
ラム、fはLPF4の出力電圧、gはオフセツト電
圧発生器5の出力電圧、hは加算器6の出力電圧
gはVCQ7の出力の電力スペクトラムである。 FIG. 3 shows signals from various parts of the conventional noise signal generator shown in FIG. 1. Figure 3 a shows the power spectrum of the input signal to the receiving circuit 2, b shows the signal voltage corresponding to the received signal frequency at the output of the receiving circuit 2, and c shows NG.
3, e is the power spectrum of the output of LPF 4, f is the output voltage of LPF 4, g is the output voltage of offset voltage generator 5, h is the output voltage of adder 6, g is the power spectrum of the output of VCQ 7. .
従来の装置は第1図の構成であり、入力信号周
波数から所定の大きさだけ離れた中心周波数を持
つ雑音信号(第3図i)を得る為に入力信号周波
数を受信回路2により検出し、第3図bに示す様
な周波数に対応した電圧信号を得、これに予め、
入力信号周波数に対して所定の周波数偏多に対応
した電圧をオフセツト電圧発生器5に設定し(第
3図g)、さらにNG3で得られるガウス雑音(第
3図c,d)のLPF4により帯域制限されたガウ
ス雑音(第3図e,f)を得て、これら3種の電
圧を加算器6により加算し(第3図h)これを
VCTQ7に印加するものである。 The conventional device has the configuration shown in FIG. 1, in which the input signal frequency is detected by the receiving circuit 2 in order to obtain a noise signal (FIG. 3 i) having a center frequency separated by a predetermined amount from the input signal frequency. A voltage signal corresponding to the frequency as shown in Fig. 3b is obtained, and in advance,
A voltage corresponding to a predetermined frequency polarization with respect to the input signal frequency is set in the offset voltage generator 5 (Fig. 3g), and then the band is determined by LPF 4 of the Gaussian noise obtained by NG3 (Fig. 3c, d). Obtain limited Gaussian noise (Fig. 3 e, f), add these three voltages by adder 6 (Fig. 3 h), and
This is applied to VCTQ7.
一般に、この方式の装置によつて得られる雑音
信号は第3図iに点線で示す様に、所望の周波数
に精度良く一致させることはできない。 Generally, the noise signal obtained by this type of apparatus cannot be precisely matched to a desired frequency, as shown by the dotted line in FIG. 3i.
その原因は、(1)第3図bに示す受信信号に対応
した信号電圧は受信回路2の周波数弁別特性によ
る誤差を含む。 The reasons for this are: (1) The signal voltage corresponding to the received signal shown in FIG. 3b includes an error due to the frequency discrimination characteristic of the receiving circuit 2.
(2)VCQ7の制御電圧対発振周波数特性が完全
に直線的でない。 (2) The control voltage versus oscillation frequency characteristic of VCQ7 is not completely linear.
等でありこれらの誤差が重畳されることによる。etc., and these errors are superimposed.
従来装置は以上のように構成されているので、
周波数スペクトルの中心が正確に受信信号周波数
又はこれより所定値シフトした周波数に設定され
た雑音信号を得るには、受信回路2の周波数対出
力電圧特性、オフセツト電圧発生器5の出力電圧
特性、さらにVCO7の制御電圧対発振周波数特
性等が高精度のものでなければならず、実際の装
置を作る上で問題があつた。 Since the conventional device is configured as described above,
In order to obtain a noise signal in which the center of the frequency spectrum is set accurately to the received signal frequency or a frequency shifted by a predetermined value from this frequency, the frequency vs. output voltage characteristics of the receiving circuit 2, the output voltage characteristics of the offset voltage generator 5, and The control voltage vs. oscillation frequency characteristics of the VCO 7 had to be highly accurate, which posed a problem when building an actual device.
この発明は上記のような従来のものの欠点に鑑
みてなされたもので、高出力増幅機能と位相変調
機能を具備したいわゆるセロダイン進行波増幅管
(以下、セロダインTWTと呼ぶ)を使用して、受
信信号に対し所定の変調増幅を行なつて所定の精
度の中心周波数と周波数スペクトルを有する雑音
信号を発生する雑音信号発生装置を提供すること
を目的とする。 This invention was made in view of the drawbacks of the conventional ones as described above, and uses a so-called Serodyne traveling wave amplifier tube (hereinafter referred to as Serodyne TWT) equipped with a high output amplification function and a phase modulation function. It is an object of the present invention to provide a noise signal generation device that generates a noise signal having a center frequency and frequency spectrum with a predetermined accuracy by performing predetermined modulation and amplification on a signal.
以下この発明の一実施例を第2図に基づいて説
明する。図において、11は受信アンテナ、12
は選択回路で所定の受信信号を抽出するもの、1
3はセロダインTWTで入力端子と出力端子と制
御端子を備え、入力端子に印加した高周波信号に
対し、制御端子に印加された制御信号で位相変調
をかけると共に増幅し出力端子に出力するもの、
14は鋸歯状波発振器(以下、SAWGENとい
う)で、所定の振幅と勾配をもつた鋸歯状波信号
を発生するもの、15は白色雑音発生器(以下、
NGという)で白色雑音を発生するもの、16は
低域フイルタ(以下、LPFという)で、前記白色
雑音に対し所定の帯域制限を与えるもの、17は
加算器で、前記SAWGEN14の出力とLPF16
の出力を加算し、前記セロダインTWT13の制
御端子に導びくものである。 An embodiment of the present invention will be described below with reference to FIG. In the figure, 11 is a receiving antenna, 12
1 is a selection circuit that extracts a predetermined received signal;
3 is a Serodyne TWT that is equipped with an input terminal, an output terminal, and a control terminal, and applies phase modulation to the high-frequency signal applied to the input terminal with a control signal applied to the control terminal, amplifies it, and outputs it to the output terminal;
14 is a sawtooth wave oscillator (hereinafter referred to as SAWGEN), which generates a sawtooth wave signal with a predetermined amplitude and slope; 15 is a white noise generator (hereinafter referred to as SAWGEN);
16 is a low-pass filter (hereinafter referred to as LPF) that applies a predetermined band limit to the white noise; 17 is an adder that combines the output of the SAWGEN 14 with the LPF 16;
The outputs of the SERODINE TWT 13 are added together and the result is led to the control terminal of the Serodyne TWT 13.
本願の雑音信号発生装置は第2図に示すとおり
セロダインTWT13の変調入力にSAW GEN
14よりの鋸歯状信号とNG15からのガウス雑
音をLPF16で帯域制限して加算器17で加算し
て印加することにより、入力信号周波数から所定
の大きさだけ偏移した周波数を中心とするガウス
型電力スペクトラムを持つ雑音信号を得るもので
ある。雑音信号の中心周波数の入力信号周波数か
らの偏移は、SAM GEF 14の鋸歯状信号の傾
斜に比例する。 As shown in Fig. 2, the noise signal generator of the present application uses the SAW GEN to the modulation input of Serodyne TWT13.
By band-limiting the sawtooth signal from NG 14 and Gaussian noise from NG 15 and adding them together in adder 17, a Gaussian signal whose center is a frequency shifted by a predetermined amount from the input signal frequency is generated. This is to obtain a noise signal with a power spectrum. The deviation of the center frequency of the noise signal from the input signal frequency is proportional to the slope of the SAM GEF 14 sawtooth signal.
まず、セロダインTWT13の周波数変換の原
理を説明する。セロダインTWT13の構造の概
略を第4図に示す。第4図で明らかな様に、セロ
ダインTWT13はRF入力端子、RF出力端子、
変調信号入力端子から成つており、変調信号はヘ
リツクス電圧を供給するものである。 First, the principle of frequency conversion of Serodyne TWT 13 will be explained. The structure of Serodyne TWT13 is schematically shown in FIG. As is clear from Figure 4, Serodyne TWT13 has an RF input terminal, an RF output terminal,
It consists of a modulation signal input terminal, and the modulation signal supplies a helical voltage.
第5図にセロダインTWT13の速度変調によ
る周波数変換の概略を示す。変調信号入力端子に
鋸歯状波を印加すると入出力間の伝搬時間も鋸歯
状に変化し、その結果、出力端子に現われる信号
周期、すなわち、周波数が変化する。第5図a,
bはそれぞれ周波数が高く偏移する場合と低く偏
移する場合を示す。 FIG. 5 shows an outline of frequency conversion by speed modulation of the Serodyne TWT 13. When a sawtooth wave is applied to the modulation signal input terminal, the propagation time between the input and output also changes in a sawtooth manner, and as a result, the signal period, that is, the frequency, appearing at the output terminal changes. Figure 5a,
b indicates a case where the frequency shifts high and a case where the frequency shifts low, respectively.
本発明はこのようなセロダインTWT13の周
波数変換作用と応用した雑音信号発生器である。 The present invention is a noise signal generator that utilizes the frequency conversion function of the Serodyne TWT13.
第6図にセロダインTWT13による雑音信号
発生装置の動作を説明する。第6図a,bに示す
様にセロダインTWT13の変調入力信号が一定
の場合は、伝搬時間も一定であり、周波数変換は
発生しない。第6図c,d,e,fに示す様に変
調入力信号を鋸歯状波にするとその傾きの符号に
よつて出力には入力信号周波数から上下に偏移し
た信号が得られる。 The operation of the noise signal generator using the Serodyne TWT 13 will be explained in FIG. As shown in FIGS. 6a and 6b, when the modulated input signal of the Serodyne TWT 13 is constant, the propagation time is also constant and no frequency conversion occurs. As shown in FIGS. 6c, d, e, and f, when the modulated input signal is made into a sawtooth wave, a signal that is shifted upward or downward from the input signal frequency is obtained at the output depending on the sign of the slope.
次に第6図h,gに示す様にNG15のガウス
雑音をLPF16で帯域制限し、加算器17にて加
算して変調入力に印加すると電力スペクトラムが
ガウス型の雑音信号を得ることができる。これら
の信号を第6図i,j,k,lに示す。 Next, as shown in FIG. 6h and g, the Gaussian noise of the NG 15 is band-limited by the LPF 16, added by the adder 17, and applied to the modulation input to obtain a noise signal with a Gaussian power spectrum. These signals are shown in FIG. 6 i, j, k, l.
以上の原理により雑音信号を発生する本装置は
従来装置に比較して次の利点がある。 The present device, which generates a noise signal based on the above principle, has the following advantages compared to conventional devices.
従来装置が入力信号周波数を一坦弁別して
VCOを制御しているのに対して本装置は直接
入力信号に対して周波数変換を行つている為、
弁別回路が不要で、弁別特性による誤差が発生
しない。 Conventional equipment flatly discriminates the input signal frequency.
While the VCO is controlled, this device directly performs frequency conversion on the input signal, so
No discrimination circuit is required, and no errors occur due to discrimination characteristics.
SAW GEN 14によつて直線性に優れた鋸
歯状電圧が容易に得られる。 With SAW GEN 14, a sawtooth voltage with excellent linearity can be easily obtained.
セロダインTWT13は高出力の増幅作用を
持つており従来装置のような出力段の高周波増
幅器は不要となる。 The Serodyne TWT13 has a high-output amplification function, so there is no need for a high-frequency amplifier in the output stage as in conventional devices.
なお、TWTの代りに半導体移相器を使用する
と広帯域特性の面でさらによいものが得られる。 Note that if a semiconductor phase shifter is used instead of the TWT, even better broadband characteristics can be obtained.
なお上記実施例ではLPF16の通過帯域を急峻
なしや断特性をもつものとしているが、通過帯域
特性をガウス関数状のものにしても良く、その場
合セロダインTWT21の出力には矩形に近い電
力スペクトルをもつた信号が現われ、電力スペク
トルの拡がりを押えたい場合特に有効である。 In the above embodiment, the passband of the LPF 16 is made to have no steepness or cut-off characteristics, but the passband characteristic may be made into a Gaussian function. In that case, the output of the Serodyne TWT 21 has a power spectrum that is close to a rectangle. This is particularly effective when a sloppy signal appears and it is desired to suppress the spread of the power spectrum.
以上のように、この発明によれば雑音的FM信
号発生部がセロダインTWTによつて構成される
ので入力信号に対して周波数を精度よく測定する
装置を必要とせず、入力信号周波数に正確に等し
い、あるいは入力周波数から正確に所定の周波数
だけ偏移した点をその電力スペクトルの中心とす
る雑音FM信号が容易に得られる。さらに、その
電力スペクトルの帯域幅は狭いものから広いもの
まで広い範囲にわたつて任意に得られる。またセ
ロダインTWT自身高出力増幅器を兼ねるので出
力段に高出力増幅器を必要としない。 As described above, according to the present invention, since the noisy FM signal generator is configured by the Serodyne TWT, there is no need for a device to accurately measure the frequency of the input signal, and the frequency is precisely equal to the input signal frequency. Alternatively, a noisy FM signal whose power spectrum is centered at a point exactly deviated from the input frequency by a predetermined frequency can be easily obtained. Furthermore, the bandwidth of the power spectrum can be arbitrarily obtained over a wide range from narrow to wide. Furthermore, since the Serodyne TWT itself also serves as a high-output amplifier, a high-output amplifier is not required in the output stage.
第1図は従来装置を示す図、第2図はこの発明
の実施例を示す図、第3図は従来装置の動作を示
す波形説明図、第4図はセロダインTWTの構成
図、第5図はセロダインTWTの周波数変換動作
説明図、第6図は第2図の各部分の波形説明図で
ある。
1…受信アンテナ、12…選択回路、13…セ
ロダインTWT、14…鋸歯状波発振器、15…
白色雑音発生器、16…低域フイルタ、17…加
算器。
Fig. 1 is a diagram showing a conventional device, Fig. 2 is a diagram showing an embodiment of the present invention, Fig. 3 is a waveform explanatory diagram showing the operation of the conventional device, Fig. 4 is a configuration diagram of Serodyne TWT, and Fig. 5 6 is an explanatory diagram of the frequency conversion operation of the Serodyne TWT, and FIG. 6 is an explanatory diagram of waveforms of each part of FIG. 2. DESCRIPTION OF SYMBOLS 1... Receiving antenna, 12... Selection circuit, 13... Serodyne TWT, 14... Sawtooth wave oscillator, 15...
White noise generator, 16...Low pass filter, 17... Adder.
Claims (1)
信号を出力する出力端子と、ビーム集速及び伝達
位相の制御を行なうヘリカル電極とを有し、ヘリ
カル電極に印加する信号電圧を制御して伝達位相
を変え得るようにしたセロダイン増幅効果を有す
る進行波管、所定の帯域制限を行なつた雑音信号
と、所定の勾配と振幅とを有する鋸傷状信号とを
重畳して前記進行波管のヘリカル電極に印加する
手段を備え、前記進行波管のヘリカル電極に印加
する信号電圧を制御して進行波管を通過する信号
に対し変調をかけ所定の中心周波数及び帯域幅を
有する高周波雑音信号を発生する雑音信号発生装
置。1. Has an input terminal for applying an input signal, an output terminal for outputting an amplified signal, and a helical electrode for controlling beam speed and transmission phase, and controls the signal voltage applied to the helical electrode for transmission. A traveling wave tube having a serrodyne amplification effect whose phase can be changed, a noise signal subjected to a predetermined band limitation, and a sawtooth signal having a predetermined slope and amplitude are superimposed to form the traveling wave tube. A means for applying voltage to a helical electrode is provided, and the signal voltage applied to the helical electrode of the traveling wave tube is controlled to modulate the signal passing through the traveling wave tube to generate a high frequency noise signal having a predetermined center frequency and bandwidth. Noise signal generator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12445679A JPS5647108A (en) | 1979-09-27 | 1979-09-27 | Noise signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12445679A JPS5647108A (en) | 1979-09-27 | 1979-09-27 | Noise signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5647108A JPS5647108A (en) | 1981-04-28 |
JPS6142446B2 true JPS6142446B2 (en) | 1986-09-20 |
Family
ID=14885962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12445679A Granted JPS5647108A (en) | 1979-09-27 | 1979-09-27 | Noise signal generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647108A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151270A1 (en) * | 1981-12-24 | 1983-07-07 | W. Schlafhorst & Co, 4050 Mönchengladbach | METHOD AND DEVICE FOR KNOT-FREE CONNECTION OF TWO THREADS |
DE3201049A1 (en) * | 1982-01-15 | 1983-07-28 | W. Schlafhorst & Co, 4050 Mönchengladbach | PREPARATION DEVICE FOR PREPARING A THREADING END |
JPS58144065A (en) * | 1982-02-19 | 1983-08-27 | Murata Mach Ltd | Method and device for untwining thread ends in a pneumatic splicer |
JPS58140946U (en) * | 1982-03-17 | 1983-09-22 | 村田機械株式会社 | Pneumatic splicing device |
CH655492B (en) * | 1982-07-01 | 1986-04-30 | ||
JPS60171975A (en) * | 1984-02-16 | 1985-09-05 | Murata Mach Ltd | Fluid ending apparatus |
JPS60236980A (en) * | 1984-05-07 | 1985-11-25 | Toray Eng Co Ltd | Yarn supply device |
DE3425349A1 (en) * | 1984-07-10 | 1986-01-16 | Schlafhorst & Co W | METHOD AND DEVICE FOR PRODUCING A THREAD CONNECTION BY SPLICING |
DE3427356A1 (en) * | 1984-07-25 | 1986-02-06 | W. Schlafhorst & Co, 4050 Mönchengladbach | METHOD AND DEVICE FOR TENSIONING A THREAD ON AN OE-SPINNING DEVICE |
JPS63203832A (en) * | 1987-02-19 | 1988-08-23 | Nitto Boseki Co Ltd | Yarn end removal in yarn tying in air spinning process and system therefor |
JPH01214586A (en) * | 1988-02-24 | 1989-08-28 | Murata Mach Ltd | Untwisting method for sized string in ending device |
-
1979
- 1979-09-27 JP JP12445679A patent/JPS5647108A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5647108A (en) | 1981-04-28 |
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