JP2020073917A5 - - Google Patents
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- JP2020073917A5 JP2020073917A5 JP2020009011A JP2020009011A JP2020073917A5 JP 2020073917 A5 JP2020073917 A5 JP 2020073917A5 JP 2020009011 A JP2020009011 A JP 2020009011A JP 2020009011 A JP2020009011 A JP 2020009011A JP 2020073917 A5 JP2020073917 A5 JP 2020073917A5
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Claims (7)
任意の複数の第２の位置それぞれから電波を発射したと仮定したときの前記第１の位置における電波の受信強度の第１の推定値と前記測定値との誤差を示す第１の誤差を算出する誤差算出手段と、
前記第１の誤差が最小となる前記第２の位置を、電波の発射源の位置と推定する発射源推定手段と、
受信強度の強度分布を推定する強度分布推定手段と
を有し、
前記誤差算出手段は、
前記第２の位置と、前記第２の位置において電波を発射したと仮定したときの送信出力である仮定送信出力との関数である前記第１の推定値を算出し、
前記複数のセンサの前記測定値と前記第１の推定値との差分の関数を誤差関数として算出し、
前記発射源推定手段は、
前記複数の第２の位置のうち、前記誤差関数を最小とする前記第２の位置を、電波の発射源の位置と推定し、
電波の発射源の位置と推定された前記第２の位置において、前記複数のセンサの前記測定値と前記第１の推定値との差分の関数である誤差関数を最小とする前記仮定送信出力を、前記発射源における送信出力と推定し、
前記強度分布推定手段は、前記推定された前記発射源の位置から前記推定された送信出力で電波を発射したときの、前記複数のセンサが配置された空間における受信強度の強度分布を、伝搬損失を用いて推定する
電波監視装置。 A measurement value acquisition means for acquiring the measurement value of the reception intensity of the radio wave measured by each of the plurality of sensors arranged at each of the plurality of first positions from each of the plurality of sensors.
Calculate the first error indicating the error between the first estimated value and the measured value of the reception intensity of the radio wave at the first position when it is assumed that the radio wave is emitted from each of a plurality of arbitrary second positions. Error calculation means and
The second position where the first error is minimized, and the wave source estimation means for estimating the position of the radio wave source in,
It has an intensity distribution estimation means for estimating the intensity distribution of reception intensity,
The error calculation means is
The first estimated value, which is a function of the second position and the assumed transmission output which is the transmission output when it is assumed that the radio wave is emitted at the second position, is calculated.
A function of the difference between the measured value of the plurality of sensors and the first estimated value is calculated as an error function.
The source estimation means is
Of the plurality of second positions, the second position that minimizes the error function is estimated to be the position of the radio wave emission source.
At the second position estimated to be the position of the radio wave emission source, the assumed transmission output that minimizes the error function that is a function of the difference between the measured value of the plurality of sensors and the first estimated value is obtained. , Estimated as the transmission output at the source
The intensity distribution estimation means propagates the intensity distribution of the reception intensity in the space where the plurality of sensors are arranged when the radio wave is emitted from the estimated position of the emission source with the estimated transmission output. Radio wave monitoring device estimated using.
請求項１に記載の電波監視装置。 The radio wave monitoring device according to claim 1, wherein the error calculating means calculates the first estimated value based on the propagation loss between the first position and the second position.
前記発射源推定手段は、前記複数の第２の位置のうち、前記誤差関数の最小値が最小となる前記第２の位置を、電波の発射源の位置と推定する
請求項１に記載の電波監視装置。 It said error calculating means calculates a minimum value of the error function at each previous SL plurality of second position,
The radio wave according to claim 1, wherein the emission source estimating means estimates the position where the minimum value of the error function is the minimum among the plurality of second positions as the position of the emission source of the radio wave. Monitoring device.
前記誤差分布算出手段によって算出された前記誤差分布を用いて、前記強度分布推定手段によって推定された前記強度分布を補正する強度分布補正手段と
をさらに有する請求項１〜３のいずれか１項に記載の電波監視装置。 The second error in the space, which is an error between the second estimated value at the first position and the measured value in the intensity distribution estimated by the intensity distribution estimation means by spatial interpolation, is used. An error distribution calculation means that calculates an error distribution that interpolates the error of 2 and
3. The radio wave monitoring device described.
電波を監視する電波監視装置と
を有し、
前記電波監視装置は、
前記複数のセンサによってそれぞれ測定された電波の受信強度の測定値を、前記複数のセンサそれぞれから取得する測定値取得手段と、
任意の複数の第２の位置それぞれから電波を発射したと仮定したときの前記第１の位置における電波の受信強度の第１の推定値と前記測定値との誤差を示す第１の誤差を算出する誤差算出手段と、
前記第１の誤差が最小となる前記第２の位置を、電波の発射源の位置と推定する発射源推定手段と、
受信強度の強度分布を推定する強度分布推定手段と
を有し、
前記誤差算出手段は、
前記第２の位置と、前記第２の位置において電波を発射したと仮定したときの送信出力である仮定送信出力との関数である前記第１の推定値を算出し、
前記複数のセンサの前記測定値と前記第１の推定値との差分の関数を誤差関数として算出し、
前記発射源推定手段は、
前記複数の第２の位置のうち、前記誤差関数を最小とする前記第２の位置を、電波の発射源の位置と推定し、
電波の発射源の位置と推定された前記第２の位置において、前記複数のセンサの前記測定値と前記第１の推定値との差分の関数である誤差関数を最小とする前記仮定送信出力を、前記発射源における送信出力と推定し、
前記強度分布推定手段は、前記推定された前記発射源の位置から前記推定された送信出力で電波を発射したときの、前記複数のセンサが配置された空間における受信強度の強度分布を、伝搬損失を用いて推定する
電波監視システム。 With multiple sensors located in each of the multiple first positions,
It has a radio wave monitoring device that monitors radio waves,
The radio wave monitoring device is
A measurement value acquisition means for acquiring a measured value of radio wave reception intensity measured by each of the plurality of sensors from each of the plurality of sensors,
Calculate the first error indicating the error between the first estimated value and the measured value of the reception intensity of the radio wave at the first position when it is assumed that the radio wave is emitted from each of a plurality of arbitrary second positions. Error calculation means and
The second position where the first error is minimized, and the wave source estimation means for estimating the position of the radio wave source in,
It has an intensity distribution estimation means for estimating the intensity distribution of reception intensity,
The error calculation means is
The first estimated value, which is a function of the second position and the assumed transmission output which is the transmission output when it is assumed that the radio wave is emitted at the second position, is calculated.
A function of the difference between the measured value of the plurality of sensors and the first estimated value is calculated as an error function.
The source estimation means is
Of the plurality of second positions, the second position that minimizes the error function is estimated to be the position of the radio wave emission source.
At the second position estimated to be the position of the radio wave emission source, the assumed transmission output that minimizes the error function that is a function of the difference between the measured value of the plurality of sensors and the first estimated value is obtained. , Estimated as the transmission output at the source
The intensity distribution estimation means propagates the intensity distribution of the reception intensity in the space where the plurality of sensors are arranged when the radio wave is emitted from the estimated position of the emission source with the estimated transmission output. A radio wave monitoring system that estimates using.
任意の複数の第２の位置それぞれから電波を発射したと仮定したときの前記第１の位置における電波の受信強度の第１の推定値であって、前記第２の位置と、前記第２の位置において電波を発射したと仮定したときの送信出力である仮定送信出力との関数である前記第１の推定値を算出し、 前記複数のセンサの前記測定値と前記第１の推定値との差分の関数を誤差関数として算出し、
前記複数の第２の位置のうち、前記誤差関数を最小とする前記第２の位置を、電波の発射源の位置と推定し、
電波の発射源の位置と推定された前記第２の位置において、前記複数のセンサの前記測定値と前記第１の推定値との差分の関数である誤差関数を最小とする前記仮定送信出力を、前記発射源における送信出力と推定し、
前記推定された前記発射源の位置から前記推定された送信出力で電波を発射したときの、前記複数のセンサが配置された空間における受信強度の強度分布を、伝搬損失を用いて推定する
電波監視方法。 The measured value of the reception intensity of the radio wave measured by each of the plurality of sensors arranged at each of the plurality of first positions is acquired from each of the plurality of sensors.
It is a first estimated value of the reception intensity of the radio wave at the first position when it is assumed that the radio wave is emitted from each of a plurality of arbitrary second positions, and is the second position and the second position. The first estimated value, which is a function of the assumed transmission output which is the transmission output when it is assumed that the radio wave is emitted at the position, is calculated, and the measured value of the plurality of sensors and the first estimated value are combined. Calculate the difference function as an error function and
Among previous SL plurality of second position, said second position to minimize the error function, estimates the position of the radio wave source in,
At the second position estimated to be the position of the radio wave emission source, the assumed transmission output that minimizes the error function that is a function of the difference between the measured value of the plurality of sensors and the first estimated value is obtained. , Estimated as the transmission output at the source
Radio wave monitoring that estimates the intensity distribution of the reception intensity in the space where the plurality of sensors are arranged when the radio wave is emitted from the estimated position of the emission source with the estimated transmission output by using the propagation loss. Method.
任意の複数の第２の位置それぞれから電波を発射したと仮定したときの前記第１の位置における電波の受信強度の第１の推定値であって、前記第２の位置と、前記第２の位置において電波を発射したと仮定したときの送信出力である仮定送信出力との関数である前記第１の推定値を算出するステップと、
前記複数のセンサの前記測定値と前記第１の推定値との差分の関数を誤差関数として算出するステップと、
前記複数の第２の位置のうち、前記誤差関数を最小とする前記第２の位置を、電波の発射源の位置と推定するステップと、
電波の発射源の位置と推定された前記第２の位置において、前記複数のセンサの前記測定値と前記第１の推定値との差分の関数である誤差関数を最小とする前記仮定送信出力を、前記発射源における送信出力と推定するステップと、
前記推定された前記発射源の位置から前記推定された送信出力で電波を発射したときの、前記複数のセンサが配置された空間における受信強度の強度分布を、伝搬損失を用いて推定するステップと
をコンピュータに実行させるプログラム。 A step of acquiring the measured value of the reception intensity of the radio wave measured by each of the plurality of sensors arranged at each of the plurality of first positions from each of the plurality of sensors, and
It is a first estimated value of the reception intensity of the radio wave at the first position when it is assumed that the radio wave is emitted from each of a plurality of arbitrary second positions, and is the second position and the second position. The step of calculating the first estimated value, which is a function of the assumed transmission output , which is the transmission output when it is assumed that the radio wave is emitted at the position, and
A step of calculating a function of the difference between the measured value of the plurality of sensors and the first estimated value as an error function, and
Among previous SL plurality of second position, the steps of the second position to minimize the error function is estimated as the position of the radio wave source in,
At the second position estimated to be the position of the radio wave emission source, the assumed transmission output that minimizes the error function that is a function of the difference between the measured value of the plurality of sensors and the first estimated value is obtained. , The step of estimating the transmission output at the source, and
A step of estimating the intensity distribution of the reception intensity in the space where the plurality of sensors are arranged when the radio wave is emitted from the estimated position of the emission source with the estimated transmission output by using the propagation loss. A program that causes a computer to run.
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| JP2020009011A JP7007023B2 (en) | 2020-01-23 | 2020-01-23 | Radio wave monitoring device, radio wave monitoring system, radio wave monitoring method and program |
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| JP2018095692A Division JP6659054B2 (en) | 2018-05-17 | 2018-05-17 | Radio wave monitoring device, radio wave monitoring system, radio wave monitoring method and program |
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| JP2020073917A JP2020073917A (en) | 2020-05-14 |
| JP2020073917A5 true JP2020073917A5 (en) | 2021-09-30 |
| JP7007023B2 JP7007023B2 (en) | 2022-01-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3943339B2 (en) * | 2000-02-25 | 2007-07-11 | 株式会社エヌ・ティ・ティ・ドコモ | Method and system for estimating position of mobile device in mobile communication system |
| US7116988B2 (en) * | 2004-03-16 | 2006-10-03 | Airespace, Inc. | Location of wireless nodes using signal strength weighting metric |
| US7236128B2 (en) * | 2004-06-23 | 2007-06-26 | Cognio, Inc. | System and method for locating radio emitters using self-calibrated path loss computation |
| US7660591B1 (en) * | 2005-09-09 | 2010-02-09 | Avaya Inc. | Propagation loss model based indoor wireless location of stations |
| JP4934441B2 (en) * | 2007-01-22 | 2012-05-16 | 株式会社日立製作所 | Wireless node position estimation method, system, and processing apparatus therefor |
| JP2009065394A (en) * | 2007-09-05 | 2009-03-26 | Meiji Univ | Attenuation constant estimation system for sensor network, node position estimation system, estimating method and program thereof |
| JP5522054B2 (en) * | 2008-12-09 | 2014-06-18 | 日本電気株式会社 | Radio wave environment data correction system, method and program |
| JP5048021B2 (en) * | 2009-06-16 | 2012-10-17 | 株式会社エヌ・ティ・ティ・ドコモ | Building influence estimation apparatus and building influence estimation method |
| US8669902B2 (en) * | 2010-09-03 | 2014-03-11 | Cisco Technology, Inc. | Location estimation for wireless devices |
| JP6032462B2 (en) * | 2012-03-29 | 2016-11-30 | 国立大学法人東京工業大学 | Source estimation method and source estimation apparatus using the same |
| JP6659054B2 (en) * | 2018-05-17 | 2020-03-04 | Ｎｅｃプラットフォームズ株式会社 | Radio wave monitoring device, radio wave monitoring system, radio wave monitoring method and program |
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