JP2012247371A - Radio wave emitting source visualizing device and method thereof - Google Patents

Radio wave emitting source visualizing device and method thereof Download PDF

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JP2012247371A
JP2012247371A JP2011121042A JP2011121042A JP2012247371A JP 2012247371 A JP2012247371 A JP 2012247371A JP 2011121042 A JP2011121042 A JP 2011121042A JP 2011121042 A JP2011121042 A JP 2011121042A JP 2012247371 A JP2012247371 A JP 2012247371A
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emission source
radio wave
signal
antenna elements
switching
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Tatsuya Nozawa
達哉 野沢
Kazuhiro Hirayama
和宏 平山
Hidemi Oki
秀実 大木
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Toshiba Corp
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Abstract

PROBLEM TO BE SOLVED: To appropriately visualize a radio wave emitting source even when receiving a pulse signal.SOLUTION: The radio wave emitting source visualizing device comprises: plural antenna elements 1-1-1-16 each receiving a pulse wave; a switching section 2 that switches the plural antenna elements between receiving mode and outputting mode; a receiving section 4 that receives a signal from each of the antenna elements and converts the frequency into an IF signal; a signal processing section 3 that repeats sampling predetermined times while switching the antenna elements to estimate an emitting source of the pulse wave for each of the antenna elements; and an operation display section 6 that displays the emitting source based on an estimation result made by the signal processing section 3.

Description

本発明の実施形態は、電波の到来方向を推定し、推定結果を画像化する電波発射源可視化装置及びその方法に関する。   Embodiments described herein relate generally to a radio wave emission source visualization apparatus and method for estimating an arrival direction of radio waves and imaging an estimation result.

１６チャンネル同時受信方式の電波発射源可視化処理を適用してパルス信号の可視化処理を行っていたが、１６チャンネル同時受信方式であるため、受信系統が１６系統必要となり、装置の外形が大きくなり、２チャンネル切替方式の装置より高価であった。   The 16-channel simultaneous reception system radio wave emission source visualization process was applied to perform the pulse signal visualization process. However, since the 16-channel simultaneous reception system is used, 16 reception systems are required, and the outer shape of the apparatus is increased. It was more expensive than a two-channel switching type device.

特開２００７−２１２２２８号公報JP 2007-212228 A

一方、従来の２チャンネル切替方式の電波発射源可視化装置では、パルス信号を受信した場合、アンテナ１素子に対するサンプリング数が少ないため、電波発射源を的確に可視化することができなかった。   On the other hand, in the conventional two-channel switching radio wave emission source visualization device, when a pulse signal is received, the radio wave emission source cannot be accurately visualized because the number of samplings for one antenna element is small.

本実施形態の目的は、パルス信号を受信した場合でも電波発射源を的確に可視化することができる電波発射源可視化装置及びその方法を提供することにある。   An object of the present embodiment is to provide a radio wave emission source visualization apparatus and method that can accurately visualize a radio wave emission source even when a pulse signal is received.

本実施形態に係る電波発射源可視化装置は、パルス波を受信する複数のアンテナ素子と、前記複数のアンテナ素子の受信出力を切り替える切替部と、前記アンテナ素子毎の受信信号をＩＦ信号に周波数変換する受信部と、前記アンテナ素子を切り替えて前記アンテナ素子毎に所定回数のサンプリングを繰り返した後に、前記パルス波の発射源を推定する信号処理部と、前記信号処理部の推定結果をもとに前記発射源を表示する表示部とを具備する。   The radio wave emission source visualization device according to the present embodiment includes a plurality of antenna elements that receive a pulse wave, a switching unit that switches a reception output of the plurality of antenna elements, and a frequency conversion of a reception signal for each antenna element into an IF signal Based on the estimation result of the signal processing unit, the signal processing unit for estimating the emission source of the pulse wave, after repeating the sampling a predetermined number of times for each antenna element by switching the antenna element A display unit for displaying the emission source.

また、本実施形態に係る電波発射源可視化方法は、パルス波を受信する複数のアンテナ素子を備え、前記パルス波の発射源を可視化する電波発射源可視化装置に用いられる方法であって、前記複数のアンテナ素子の受信出力を切り替えて前記アンテナ素子毎に所定回数のサンプリングを繰り返した後に、前記パルス波の発射源を推定し、前記推定結果をもとに前記発射源を表示するものである。   The radio wave emission source visualization method according to the present embodiment is a method used in the radio wave emission source visualization device that includes a plurality of antenna elements that receive a pulse wave and visualizes the emission source of the pulse wave. After switching the reception output of the antenna element and repeating the sampling a predetermined number of times for each antenna element, the emission source of the pulse wave is estimated, and the emission source is displayed based on the estimation result.

本実施形態に係る電波発射源可視化装置を示す図。The figure which shows the radio wave emission source visualization apparatus which concerns on this embodiment. 電波発射源可視化処理の手順を示すフローチャート。The flowchart which shows the procedure of a radio wave emission source visualization process.

以下、図面を参照しながら本実施形態に係る電波発射源可視化装置及びその方法を説明する。   The radio wave emission source visualization device and method according to the present embodiment will be described below with reference to the drawings.

図１は、本実施形態に係る電波発射源可視化装置を示す図である。電波発射源可視化装置は、アンテナ部１、切替部２、信号処理部３、受信部４、ローカル信号発生部５及び操作表示部６を備える。   FIG. 1 is a diagram showing a radio wave emission source visualization device according to the present embodiment. The radio wave emission source visualization device includes an antenna unit 1, a switching unit 2, a signal processing unit 3, a receiving unit 4, a local signal generating unit 5, and an operation display unit 6.

アンテナ部１は、複数のアンテナ素子１−１〜１−１６を配列したアレイアンテナで構成される。切替部２は、信号処理部３からの制御信号にしたがってアンテナ部１の各アンテナ素子の受信出力を切り替える。各アンテナ素子の受信信号は切替部２を介して受信部４に入力される。受信部４は、アンテナ素子毎の受信信号をＩＦ（Intermediate Frequency）信号に周波数変換する。具体的には、ローカル信号発生器５から出力されるローカル信号に基づいて周波数変換処理、Ａ／Ｄ（Analog to Digital）変換処理を行う。信号処理部３は、受信部４から出力されるデジタル信号をもとに電波到来方向の推定演算を実行し、この推定演算された結果をもとに電波発射源を示す二次元画像を操作表示部６に表示する。   The antenna unit 1 includes an array antenna in which a plurality of antenna elements 1-1 to 1-16 are arranged. The switching unit 2 switches the reception output of each antenna element of the antenna unit 1 according to the control signal from the signal processing unit 3. The reception signal of each antenna element is input to the receiving unit 4 via the switching unit 2. The receiving unit 4 converts the frequency of the reception signal for each antenna element into an IF (Intermediate Frequency) signal. Specifically, frequency conversion processing and A / D (Analog to Digital) conversion processing are performed based on the local signal output from the local signal generator 5. The signal processing unit 3 performs a radio wave arrival direction estimation calculation based on the digital signal output from the reception unit 4, and operates and displays a two-dimensional image showing the radio wave emission source based on the estimation calculation result Displayed in part 6.

次に、このように構成された電波発射源可視化装置の動作について説明する。図２は、電波発射源可視化処理の手順を示すフローチャートである。ここでは、一例として、アンテナ部１のアンテナ素子数がアンテナ素子１−１〜１−１６の１６本で構成され、パルス波を３回受信してからアンテナ素子を切り替える手法を一例として示す。   Next, the operation of the radio wave emission source visualization device configured as described above will be described. FIG. 2 is a flowchart showing a procedure of radio wave emission source visualization processing. Here, as an example, a method in which the number of antenna elements of the antenna unit 1 is composed of 16 antenna elements 1-1 to 1-16, and a method of switching antenna elements after receiving a pulse wave three times is shown as an example.

先ず、信号処理部３は、受信信号の閾値判定を行う（ステップＳ１）。受信信号の強度が所定の閾値を超えた場合に、サンプリング処理を実行する。   First, the signal processing unit 3 determines the threshold value of the received signal (step S1). Sampling processing is executed when the intensity of the received signal exceeds a predetermined threshold.

アンテナ素子１−１で受信信号のサンプリングを３回繰り返す（ステップＳ２−１）。信号処理部３は、切替部２で次のアンテナ素子１−２に切り替え、アンテナ素子１−２で受信信号のサンプリングを３回繰り返す（ステップＳ２−２）。同様に、アンテナ素子毎に受信信号のサンプリングを３回ずつ繰り返し行い、アンテナ素子１−１６で受信信号のサンプリングを３回繰り返す（ステップＳ２−１６）。全てのアンテナ素子で受信信号のサンプリングを所定回数行った後に、信号処理部３は、電波発射源の可視化処理を行う（ステップＳ３）。   The reception signal sampling is repeated three times by the antenna element 1-1 (step S2-1). The signal processing unit 3 switches to the next antenna element 1-2 by the switching unit 2, and repeats sampling of the received signal by the antenna element 1-2 three times (step S2-2). Similarly, reception signal sampling is repeated three times for each antenna element, and reception signal sampling is repeated three times by the antenna element 1-16 (step S2-16). After the received signal is sampled a predetermined number of times by all antenna elements, the signal processing unit 3 performs a radio wave emission source visualization process (step S3).

パルス信号の１回のサンプリング数が少ないため、アンテナ１素子当たりのサンプル取得を複数回実施することにより、アンテナ素子１つに対する総サンプリング数を増やしてパルス波の電波発射源推定処理を行う。   Since the number of sampling of the pulse signal is small, the sampling per pulse of the antenna element is performed a plurality of times, thereby increasing the total number of samplings for each antenna element and performing the radio wave emission source estimation process of the pulse wave.

なお、上記図２のフローチャートでは、サンプリング回数を３回としたが、サンプリング回数は、受信対象のパルス波のパルス周期やパルス長に基づいて任意に選択することができる。例えば、パルス周期が短い場合はサンプリング回数を多くし、パルス長が長い場合はサンプリング回数を少なくする。   In the flowchart of FIG. 2, the number of times of sampling is three, but the number of times of sampling can be arbitrarily selected based on the pulse period and pulse length of the pulse wave to be received. For example, when the pulse period is short, the number of samplings is increased, and when the pulse length is long, the number of samplings is decreased.

以上述べたように、本実施形態の電波発射源可視化処理では、しきい値を超えて受信信号が入力された場合、アンテナ素子１つにおいてパルス波を複数回サンプリングする。その後、次のアンテナ素子に切り替え、同様に複数回、サンプリングを行う。すべてのアンテナ素子でサンプリングを終えたら、電波発射源の可視化を行う。このようにすることでパルス信号を受信した場合でも、十分なサンプリング数を確保することができ、電波発射源を的確に可視化することが可能となる。   As described above, in the radio wave emission source visualization process according to the present embodiment, when a reception signal is input exceeding a threshold value, a single pulse wave is sampled at one antenna element. Thereafter, switching to the next antenna element is performed, and sampling is similarly performed a plurality of times. When sampling is completed for all antenna elements, radio wave emission sources are visualized. In this way, even when a pulse signal is received, a sufficient number of samplings can be ensured, and the radio wave emission source can be accurately visualized.

なお、いくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although several embodiments have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１…アンテナ部、１−１〜１−１６…アンテナ素子、２…切替部、３…信号処理部、４…受信部、５…ローカル信号発生部、６…操作表示部。   DESCRIPTION OF SYMBOLS 1 ... Antenna part, 1-1 to 1-16 ... Antenna element, 2 ... Switching part, 3 ... Signal processing part, 4 ... Reception part, 5 ... Local signal generation part, 6 ... Operation display part.

Claims (2)

パルス波を受信する複数のアンテナ素子と、
前記複数のアンテナ素子の受信出力を切り替える切替部と、
前記アンテナ素子毎の受信信号をＩＦ信号に周波数変換する受信部と、
前記アンテナ素子を切り替えて前記アンテナ素子毎に所定回数のサンプリングを繰り返した後に、前記パルス波の発射源を推定する信号処理部と、
前記信号処理部の推定結果をもとに前記発射源を表示する表示部と
を具備することを特徴とする電波発射源可視化装置。 A plurality of antenna elements for receiving a pulse wave;
A switching unit for switching reception outputs of the plurality of antenna elements;
A receiving unit that converts the frequency of the received signal for each antenna element into an IF signal;
After repeating the sampling a predetermined number of times for each antenna element by switching the antenna element, a signal processing unit that estimates the emission source of the pulse wave,
A radio wave emission source visualization device comprising: a display unit that displays the emission source based on an estimation result of the signal processing unit. パルス波を受信する複数のアンテナ素子を備え、前記パルス波の発射源を可視化する電波発射源可視化装置に用いられる方法であって、
前記複数のアンテナ素子の受信出力を切り替えて前記アンテナ素子毎に所定回数のサンプリングを繰り返した後に、前記パルス波の発射源を推定し、
前記推定結果をもとに前記発射源を表示すること
を特徴とする電波発射源可視化方法。 A method for use in a radio wave emission source visualization device comprising a plurality of antenna elements for receiving a pulse wave and visualizing the emission source of the pulse wave,
After switching the reception output of the plurality of antenna elements and repeating sampling a predetermined number of times for each antenna element, estimating the emission source of the pulse wave,
A radio wave emission source visualization method, wherein the emission source is displayed based on the estimation result.
JP2011121042A 2011-05-30 2011-05-30 Radio wave emitting source visualizing device and method thereof Pending JP2012247371A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014185686A (en) * 2013-03-22 2014-10-02 Kayaba Ind Co Ltd Shock absorber
EP2977642A4 (en) * 2013-03-22 2017-01-25 KYB Corporation Shock absorber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212228A (en) * 2006-02-08 2007-08-23 Ministry Of Public Management Home Affairs Posts & Telecommunications Electric wave emission source visualization device and method therefor
JP2010276531A (en) * 2009-05-29 2010-12-09 Hitachi Ltd Apparatus and method for estimating incoming direction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212228A (en) * 2006-02-08 2007-08-23 Ministry Of Public Management Home Affairs Posts & Telecommunications Electric wave emission source visualization device and method therefor
JP2010276531A (en) * 2009-05-29 2010-12-09 Hitachi Ltd Apparatus and method for estimating incoming direction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014185686A (en) * 2013-03-22 2014-10-02 Kayaba Ind Co Ltd Shock absorber
EP2977642A4 (en) * 2013-03-22 2017-01-25 KYB Corporation Shock absorber

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