JPH0646743B2 - Radio wave type automatic identification device - Google Patents
Radio wave type automatic identification deviceInfo
- Publication number
- JPH0646743B2 JPH0646743B2 JP22564788A JP22564788A JPH0646743B2 JP H0646743 B2 JPH0646743 B2 JP H0646743B2 JP 22564788 A JP22564788 A JP 22564788A JP 22564788 A JP22564788 A JP 22564788A JP H0646743 B2 JPH0646743 B2 JP H0646743B2
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- output
- frequency
- wave format
- signal
- 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 - Lifetime
Links
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000001228 spectrum Methods 0.000 claims description 13
- 238000010183 spectrum analysis Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電波形式自動判別装置に関し、特に受信した電
波の変調内容としての電波形式を短時間かつ自動的に判
別測定する電波形式自動判別装置に関する。The present invention relates to a radio wave format automatic discrimination device, and more particularly to a radio wave format automatic discrimination device for automatically discriminating and measuring a radio wave format as a modulation content of a received radio wave in a short time. Regarding
従来、この種の電波形式判別装置は、自動ではなく、Ａ
Ｍ，ＦＭ，ＳＳＢ，ＯＯＫ，ＦＳＫ，ＢＰＳＫ，ＱＰＳ
Ｋ等の変調によるそれぞれの電波形式に応じた復調回路
を備え、測定者がこれら復調回路を切り替えながらその
出力にもとづいて判定する方法で電波形式を判定してい
た。Conventionally, this type of radio wave format discrimination device is not automatic
M, FM, SSB, OOK, FSK, BPSK, QPS
A demodulator circuit corresponding to each radio wave format by modulation of K or the like is provided, and the radio wave format is determined by a method in which a measurer switches these demodulator circuits and makes a determination based on the output.
上述した従来の電波形式自動判別装置は、測定者が電波
形式ごとのそれぞれの復調回路を切替えて、その出力を
測定し電波形式の判別を行なっているため、多くの時間
を要し、しかも回路規模が大きくなるという欠点があ
る。The above-described conventional radio wave format automatic determination device requires a lot of time because the measurer switches the demodulation circuit for each radio wave format and measures the output to determine the radio wave format. It has the drawback of increasing scale.
本発明の目的は上述した欠点を除去し、自動的に電波形
式の判別を行なう簡素な構成の電波自動判別装置を提供
することにある。An object of the present invention is to eliminate the above-mentioned drawbacks and to provide an electric wave automatic discrimination device having a simple structure for automatically discriminating the electric wave type.
本発明の装置は、電波の変調形式としての電波形式を判
別する電波形式判別装置において、 入力信号を中間周波数に変換したのちさらにこれを信号
処理帯域の周波数に変換する周波数変換手段と、前記周
波数変換手段の出力を受けてＡＭおよびＦＭ復調ならび
に高調波発生による非線形変換を施した出力と前記周波
数変換手段の出力とを判別用信号として発生する判別用
信号発生手段と、前記判別信号発生手段の出力する判別
用信号をＡ−Ｄ変換するＡ−Ｄ変換手段と、前記Ａ−Ｄ
変換手段の出力に対してスペクトラム分析を施しこの分
析スペクトラムの特徴抽出にもとづいて入力した電波の
電波形式を判定する電波形式判定手段とを備えて構成さ
れる。The apparatus of the present invention is a radio wave format discriminating apparatus for discriminating a radio wave format as a radio wave modulation format, and a frequency conversion means for converting an input signal to an intermediate frequency and then converting it to a frequency in a signal processing band, The discrimination signal generating means for receiving the output of the converting means and performing the non-linear conversion by AM and FM demodulation and the harmonic generation and the output of the frequency converting means as the discrimination signal, and the discrimination signal generating means. A-D conversion means for A-D converting the discrimination signal to be output, and the A-D
And a radio wave format determination means for performing spectrum analysis on the output of the conversion means and determining the radio wave format of the input radio wave based on the feature extraction of the analyzed spectrum.
次に、図面を参照して本発明を詳細に説明する。 Next, the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例の構成図である。第１図に示
す実施例の構成は、入力を中間周波数に変換したうえ、
さらにこれを後述するＣＰＵ４１の処理可能な周波数に
変換する周波数変換部１、周波数変換部１の出力のＡＭ
復調、ＦＭ復調を行なうほか、ＯＯＫ，ＦＳＫ，ＢＰＳ
Ｋ，ＱＰＳＫ等のディジタル変調波を対象としての非直
線回路による高調波発生処理を施し、また周波数変換部
１の出力をそのまま出力して電波形式判定における判別
用信号を発生する判別用信号発生部２、判別用信号をＡ
−Ｄ変換するＡ−Ｄ変換部３、Ａ−Ｄ変換部の出力を受
けて入力信号の電波形式を判定する電波形式判定部４を
備えて構成される。FIG. 1 is a block diagram of an embodiment of the present invention. In the configuration of the embodiment shown in FIG. 1, the input is converted to an intermediate frequency and
Further, the frequency conversion unit 1 for converting this into a frequency that can be processed by the CPU 41, which will be described later, and the output AM of the frequency conversion unit 1
In addition to demodulation and FM demodulation, OOK, FSK, BPS
A discrimination signal generator that performs harmonic generation processing by a non-linear circuit for digitally modulated waves such as K and QPSK, and that outputs the output of the frequency converter 1 as it is to generate a discrimination signal in radio wave format determination. 2, the discrimination signal is A
It is configured to include a radio wave format determination unit 4 that receives the outputs of the A-D conversion unit 3 for A-D conversion and the A-D conversion unit and determines the radio wave format of the input signal.
次に、第１図の実施例の動作について説明する。Next, the operation of the embodiment shown in FIG. 1 will be described.
周波数変換部１は、入力信号をＣＰＵ４１の処理可能な
周波数に変換し判別用信号発生部２に供給する。The frequency converter 1 converts the input signal into a frequency that can be processed by the CPU 41 and supplies the frequency to the discrimination signal generator 2.
判別用信号発生部２は、ＡＭ復調器２１、ＦＭ復調器２
２、非直線回路２３を有し、入力に対するＡＭ復調，Ｆ
Ｍ復調を施し、また非直線回路２３によって入力を歪ま
せて高調波を発生せしめ、これらは判別用信号として周
波数変換部１の出力とともにＡ−Ｄ変換部２に送出され
る。The discrimination signal generator 2 includes an AM demodulator 21 and an FM demodulator 2
2. Having a non-linear circuit 23, AM demodulation for input, F
M demodulation is performed, and the nonlinear circuit 23 distorts the input to generate harmonics, which are sent to the AD converter 2 together with the output of the frequency converter 1 as a discrimination signal.
Ａ−Ｄ変換部２は、Ａ−Ｄコンバータ３１〜３４を有
し、これらＡ−Ｄコンバータによってディジタル化され
た出力は電波形式判定部４に供給される。こうして、入
力はＡＭ，ＦＭ復調、高調波発生の各処理を施され、こ
れと未処理の原信号がディジタルデータとして電波形式
判定部４に供給される。The A-D conversion unit 2 has A-D converters 31 to 34, and the outputs digitized by these A-D converters are supplied to the radio wave format determination unit 4. In this way, the input is subjected to AM, FM demodulation, and harmonic generation, and this and the unprocessed original signal are supplied to the radio wave format determination unit 4 as digital data.
電波形式判定部４は、ＣＰＵ４１，メモリ４２，Ｉ／０
４３およびディジタル信号処理器４４を備えて構成さ
れ、ＣＰＵ４１およびメモリ１１ならびにディジタル信
号処理器４４はスペクトラム分析を行ない、分析された
スペクトラムの時間的分布分析ならびにエネルギー分析
をＣＰＵ４１の内蔵プログラムの制御のもとに実行し入
力信号の電波形式を判定する。入力信号のスペクトラム
分析はディジタル信号処理４４で高速フーリェ変換（Ｆ
ＦＴ）によって実行される。ＣＰＵ４１，メモリ４２お
よびディジタル信号処理器４４によるこれら分析処理を
次にフローチャートによって説明する。The radio wave format determination unit 4 includes a CPU 41, a memory 42, and I / 0.
43 and a digital signal processor 44, the CPU 41, the memory 11 and the digital signal processor 44 perform spectrum analysis, and perform time distribution analysis and energy analysis of the analyzed spectrum by controlling a program built in the CPU 41. And to determine the radio wave format of the input signal. The spectrum analysis of the input signal is performed by the digital signal processing 44 by the high-speed Fourier transform (F
FT). The analysis processing by the CPU 41, the memory 42 and the digital signal processor 44 will be described below with reference to a flowchart.
第２図は第１図の実施例における電波形式判定の処理フ
ローチャートである。FIG. 2 is a processing flowchart of the radio wave format determination in the embodiment of FIG.
まずステップＳ１で入力信号のスペクトラム分析が実行
される。このスペクトラム分析は、Ａ−Ｄコンバータ３
４の出力、すなわち原入力信号の周波数変換後のディジ
タルデータに対しＦＦＴによりディジタル信号処理器４
４がＣＰＵ４１にプログラム制御のもとにメモリ４２の
利用して処理され、すべての入力信号は周波数領域のス
ペクトラムデータとして分析される。First, in step S1, spectrum analysis of the input signal is executed. This spectrum analysis is performed by the AD converter 3
4 of the original input signal, that is, the digital data after the frequency conversion of the original input signal by the FFT, the digital signal processor 4
4 is processed by the memory 42 under the control of the CPU 41, and all input signals are analyzed as spectrum data in the frequency domain.
次にステップ２により分析スペクトラムが線スペクトル
であるか否かの判定を行なう。以下ステップ１８までは
すべて、ＣＰＵ４１のプログラムによってメモリ４２を
利用してディジタル処理器４４処理される。さて、ステ
ップＳ２での判定がＹＥＳで入力が線スペクトラムを有
するときはＣＷかＯＯＫであり、これに対してはステッ
プＳ３で連続信号か継続信号かの判定を行ない、ＹＥＳ
で連続信号であればＣＷ，ＮＯで継続信号のときはＯＯ
Ｋ波と判定する。Next, in step 2, it is determined whether the analysis spectrum is a line spectrum. All the steps up to step 18 are processed by the digital processor 44 using the memory 42 by the program of the CPU 41. If the determination in step S2 is YES and the input has a line spectrum, it is CW or OOK. For this, in step S3, it is determined whether it is a continuous signal or a continuous signal, and YES.
If it is a continuous signal at CW, NO if it is a continuous signal, then at OO
Judge as K wave.
ステップＳ２の判定結果がＮＯで分析結果が線スペクト
ルでない場合は次にステップＳ４に進む。If the determination result in step S2 is NO and the analysis result is not a line spectrum, the process proceeds to step S4.
ステップＳ４の判定処理は、スペクトラムの平坦性に着
目してノイズを抽出する処理で、ＹＥＳの場合はノイズ
と判定、然らざるときは次のステップＳ５に進む。The determination process of step S4 is a process of extracting noise while paying attention to the flatness of the spectrum. If YES, it is determined to be noise, and if not, the process proceeds to step S5.
ステップＳ５は、分析スペクトラムの対称性をしらべ、
対称性のある分布のＡＭ復調と非対称性の分布特性を呈
するＳＳＢに該当するものを抽出しようとするものであ
る。スペクトラム分布の非対称性が判定されたときは次
にステップＳ７の処理を行なう。この処理は、第１図の
判別用信号発生部２で何の処理も加えず、これがそのま
まディジタル化された原入力信号のディジタル化データ
のスペクトル分析結果に対しそのエネルギー分析評価を
行なうものである。このエネルギー評価にもとづいて次
に入力信号が音声信号であるか否かの判定、ステップＳ
８を実行し、音声信号と判定されればこれをＳＳＢと判
定する。然らざるときは未定として別に処理される。Step S5 examines the symmetry of the analysis spectrum,
It is intended to extract the AM demodulation having a symmetric distribution and the SSB exhibiting an asymmetric distribution characteristic. If the asymmetry of the spectrum distribution is determined, then the process of step S7 is performed. This processing is to perform energy analysis and evaluation on the spectrum analysis result of the digitized data of the original input signal, which is digitized as it is without adding any processing in the discrimination signal generator 2 of FIG. . Next, based on this energy evaluation, it is determined whether the input signal is a voice signal, step S
8 is executed, and if it is determined to be a voice signal, this is determined to be SSB. If not, it is treated as undecided.
ステップＳ５の判定がＹＥＳでありスペクトル分布が対
称性を有する場合はステップＳ６で第１図のＡ−Ｄコン
バータ３１の出力するＡＭ復調信号のスペクトラム分析
を行ない、さらにステップＳ９のエネルギー分析を施
す。When the determination in step S5 is YES and the spectrum distribution has symmetry, the spectrum analysis of the AM demodulated signal output from the AD converter 31 of FIG. 1 is performed in step S6, and the energy analysis of step S9 is performed.
ステップＳ９のエネルギー分析結果にもとづいて、次に
ステップＳ１０の音声判定処理を行ない、これがＹＥＳ
で音声であればＡＭと判定、然らざるときはステップＳ
１１のＦＭ復調御の信号のスペクトラム分析をＡ−Ｄコ
ンバータ３２の出力に対して実行する。このあと、ステ
ップＳ１１の分析結果についてそのエネルギーの評価分
析を行なうステップＳ１３を実行し、ステップ１３の結
果に対しその音声判断処理をステップＳ１４で行なって
ＹＥＳであればＦＭと判定、ＮＯであれば次にＡ−Ｄコ
ンバータ３４の出力する非直線回路２３の出力のディジ
タルデータの周波数分析をステップＳ１５で行なう。Based on the energy analysis result of step S9, the voice determination process of step S10 is performed next.
If it is voice, it is determined to be AM, and if not, step S
The spectrum analysis of the FM demodulation control signal 11 is executed on the output of the AD converter 32. After that, step S13 for evaluating and analyzing the energy of the analysis result of step S11 is executed, and the voice determination process is performed on the result of step S14 in step S14. If YES, it is determined to be FM, and if NO. Next, frequency analysis of the digital data output from the non-linear circuit 23 output from the AD converter 34 is performed in step S15.
Ａ−Ｄコンバータ３４の出力は、入力信号を非直線回路
にかけて得られる高調波成分で、以後２倍高調波および
４倍高調波の線スペクトル性をステップＳ１６、ステッ
プＳ１７で行なってそれぞれＢＰＳＫ．ＱＰＳＫを抽出
し、これらいずれにも該当しないときはさらにステップ
Ｓ１８によってＦＳＫを判定する。ステップＳ１８は、
２倍および４倍高調波がいずれも線スペクトルでない場
合にＡ−Ｄコンバータ３２の出力するＦＭ復調出力パル
ス状の出力があるか否かを評価し、あればこれによって
ＦＳＫを判定するもので、ＢＰＳＫ，ＱＰＳＫ，ＦＳＫ
がすべて否定される場合は未定として他の手段にその判
定を委ねる。こうして、自動的に電波形式の判別が行な
われ、Ｉ／Ｏ４３から判別結果として出力される。The output of the A / D converter 34 is a harmonic component obtained by applying an input signal to a non-linear circuit. Thereafter, the line spectral characteristics of the 2nd harmonic and the 4th harmonic are obtained in steps S16 and S17, respectively, and BPSK. QPSK is extracted, and when none of these is applicable, FSK is further determined in step S18. Step S18 is
When neither the 2nd harmonic nor the 4th harmonic is a line spectrum, it is evaluated whether or not there is an FM demodulation output pulse-like output output from the AD converter 32, and if there is, the FSK is determined. BPSK, QPSK, FSK
If all are denied, it is considered undecided and the decision is left to other means. In this way, the radio wave format is automatically discriminated, and the discrimination result is output from the I / O 43.
以上説明したように本発明は電波形式を短時間かつ自動
的に判別することにより、判別する電波形式に対応した
種種の復調回路を持たない簡素な構成で電波形式を容易
かつ迅速に判別できるという効果がある。As described above, according to the present invention, it is possible to easily and quickly discriminate the radio wave format with a simple configuration having no demodulation circuit corresponding to the radio wave format to be discriminated by automatically discriminating the radio wave format in a short time. effective.
第１図は本発明の一実施例を示す構成図で第２図は第１
図の実施例における電波形式判別のフローチャートであ
る。 １…周波数変換部、２…判別用信号発生部、３…Ａ−Ｄ
変換部、４…電波形式判定部、２１…ＡＭ復調、２２…
ＦＭ復調器、２３…非直線回路、３１〜３４…Ａ−Ｄコ
ンバータ、４１…ＣＰＵ、４２…メモリ、４３…Ｉ／
Ｏ、４４…ディジタル信号処理器。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
6 is a flowchart of a radio wave format determination in the embodiment of the figure. 1 ... Frequency converter, 2 ... Discrimination signal generator, 3 ... A-D
Converter, 4 ... Radio wave format determination unit, 21 ... AM demodulation, 22 ...
FM demodulator, 23 ... Non-linear circuit, 31-34 ... A / D converter, 41 ... CPU, 42 ... Memory, 43 ... I /
O, 44 ... Digital signal processor.
Claims (1)
る電波形式判別装置において、 入力信号を中間周波数に変換したのちさらにこれを信号
処理帯域の周波数に変換する周波数変換手段と、 前記周波数変換手段の出力を受けてＡＭおよびＦＭ復調
ならびに高調波発生による非線形変換を施した出力と前
記周波数変換手段の出力とを判別用信号として発生する
判別用信号発生手段と、 前記判別信号発生手段の出力する判別用信号をＡ−Ｄ変
換するＡ−Ｄ変換手段と、 前記Ａ−Ｄ変換手段の出力に対してスペクトラム分析を
施しこの分析スペクトラムの特徴抽出にもとづいて入力
した電波の電波形式を判定する電波形式判定手段と、 を備えて成ることを特徴とする電波形式自動判別装置。1. A radio wave format discriminating apparatus for discriminating a radio wave format as a modulation format of a radio wave, wherein frequency conversion means for converting an input signal into an intermediate frequency and then converting this into a frequency of a signal processing band, the frequency conversion. Discrimination signal generating means for generating, as discrimination signals, an output which has been subjected to non-linear conversion by AM and FM demodulation and harmonic generation in response to the output of the means, and an output of the frequency converting means; and an output of the discrimination signal generating means. A / D conversion means for A / D converting the discrimination signal, and spectrum analysis is performed on the output of the A / D conversion means, and the radio wave format of the input radio wave is determined based on the feature extraction of the analysis spectrum. An automatic radio wave format discriminating device comprising: a radio wave format discriminating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22564788A JPH0646743B2 (en) | 1988-09-09 | 1988-09-09 | Radio wave type automatic identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22564788A JPH0646743B2 (en) | 1988-09-09 | 1988-09-09 | Radio wave type automatic identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0273749A JPH0273749A (en) | 1990-03-13 |
| JPH0646743B2 true JPH0646743B2 (en) | 1994-06-15 |
Family
ID=16832576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22564788A Expired - Lifetime JPH0646743B2 (en) | 1988-09-09 | 1988-09-09 | Radio wave type automatic identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646743B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014049839A (en) * | 2012-08-30 | 2014-03-17 | Yaesu Musen Co Ltd | Radio communication device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3576880B2 (en) | 1999-09-09 | 2004-10-13 | 日本電気株式会社 | Automatic modulation system identification device and automatic modulation system identification method |
| JP2007107971A (en) * | 2005-10-12 | 2007-04-26 | Takamisawa Cybernetics Co Ltd | Magnetic sensor device |
-
1988
- 1988-09-09 JP JP22564788A patent/JPH0646743B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014049839A (en) * | 2012-08-30 | 2014-03-17 | Yaesu Musen Co Ltd | Radio communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0273749A (en) | 1990-03-13 |
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