CN102075302A - Error estimation method and device for vector sensor array - Google Patents
Error estimation method and device for vector sensor array Download PDFInfo
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- CN102075302A CN102075302A CN2009102377406A CN200910237740A CN102075302A CN 102075302 A CN102075302 A CN 102075302A CN 2009102377406 A CN2009102377406 A CN 2009102377406A CN 200910237740 A CN200910237740 A CN 200910237740A CN 102075302 A CN102075302 A CN 102075302A
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Abstract
The invention provides an error estimation method and an error estimation device for a vector sensor array. A relative error is considered in error estimation, and the corresponding errors are solved by constructing an error variable-based array flow pattern according to the included angle between the array flow pattern and an array element response estimation result. The estimation of the array error can be realized without adopting reference signals.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of error estimation and device of spectra of acoustic vector sensor array.
Background technology
In wireless communication system, use aerial array can increase the system channel capacity, thereby provide higher message transmission rate for the user.A kind of important aerial array is called spectra of acoustic vector sensor array.Each array element of spectra of acoustic vector sensor array can have 6 transducers at most, comprise 3 mutually vertical in three dimensions, the line sensor of equal in length (as shown in Figure 1) is vertical mutually in three dimensions with 3, the square ring-type transducer (as shown in Figure 2) that area equates.Wherein line sensor is used for induction field, and annular sensor is used for induced field.To the incoming wave signal that a direction is determined, an array element of spectra of acoustic vector sensor array will produce 6 tunnel received signals at most, in the practical application, may only adopt 3 electric field induction devices or 3 magnetic sensors.
Arrival bearing estimates and wave beam formation is the two principal themes of aerial array.Based on spectra of acoustic vector sensor array, the researcher has proposed a large amount of arrival bearings based on the spectra of acoustic vector sensor array characteristic and has estimated and wave beam formation method.Following document has provided some examples: " based on the signal multi-parameter method of estimation of spectra of acoustic vector sensor array ", Circuits and Systems journal, 2006 the 3rd phases; " based on the high-resolution frequency estimation algorithm research of vector sensor ", " Harbin Engineering University's journal ", 2007 the 3rd phases; " a kind of blind wave beam formation method research " based on the vector sensor battle array, " Chinese journal of scientific instrument ", 2007 the 4th phases.
Arrival bearing's method of estimation in the above document and wave beam formation method are all based on a hypothesis, i.e. the installation site entirely accurate of spectra of acoustic vector sensor array, and vector sensor has desirable array response, and promptly amplitude response is 1, and phase response is 0.Aerial array owing to the difference of different sensors degree of aging, is difficult to guarantee that all the sensors all has ideal response in actual applications.Simultaneously, array element position deviation also may occur and towards deviation in the process of installing or use.All these errors all will influence the performance of aerial array, particularly the performance aspect arrival bearing's estimation.Therefore,, become an important topic, existing at present blind correction method and based on the estimation error and the bearing calibration of reference signal to the estimation error and the correction of vector inductor array.Wherein, based on the estimation error and the bearing calibration of reference signal, its shortcoming is: 1) must be useful on the hardware device that produces reference signal, and must accurately know the deflection of signal, this has increased the complexity of system; 2) the relative subscriber signal of reference signal is to disturb, so the use of reference signal has been equivalent to increase the interference level of system.The defective of existing blind correction method is: need will send signal by reference channel and be transferred to the base station end, and need to estimate that the delay inequality of reference channel and actual channel, reality also are equivalent to produce a reference signal at receiving terminal, its system complexity is higher.
As seen from the above analysis, when spectra of acoustic vector sensor array was carried out error estimation, the method for prior art all needed the known reference signal of angle, thereby the system complexity height; Simultaneously, prior art can only be to the channel error of spectra of acoustic vector sensor array, and promptly amplitude response sum of errors phase response error is proofreaied and correct, and can not further distinguish the site error of array element and towards error.
Summary of the invention
Technical problem to be solved by this invention provides a kind of error estimation and device of spectra of acoustic vector sensor array, need not to use reference signal can realize estimation error to array.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
A kind of error estimation of spectra of acoustic vector sensor array comprises:
Steps A is calculated the array response estimated result of described spectra of acoustic vector sensor array to the incoming wave signal, and described array response estimated result is decomposed, and obtains the array element response estimated result of each array element in the described spectra of acoustic vector sensor array;
Step B, to each array element in the described spectra of acoustic vector sensor array, ignore array element under the situation of sum of errors site error, according to described array element response estimated result, estimate the incoming wave sense and the channel error of described each array element;
Step C, for each array element, under the situation of the site error of ignoring array element, estimated result according to the channel error of the array element response estimated result of the estimated result of the incoming wave sense of reference array element, described each array element and described each array element, estimate described each array element towards error, described reference array element is an optional array element from all array elements of described spectra of acoustic vector sensor array;
Step D, according to the estimated result of the channel error of the array element response estimated result of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element and the estimated result towards error of described each array element, estimate the sensor position uncertainties of described each array element.
Preferably, in the said method, in the described steps A, the described spectra of acoustic vector sensor array of described calculating comprises the array response estimated result of incoming wave signal:
Preferably, in the said method, described step B comprises:
Step B1 is to described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal;
Step B2, with the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
Preferably, in the said method, described step C comprises:
Step C1, for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Step C2, with the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
Preferably, in the said method, described step D comprises:
Step D1, according to the array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element site error, the tri-array flow pattern of structure incoming wave signal towards the estimated result of error and unknown described each array element;
Step D2, with the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
The present invention also provides a kind of error estimation device of spectra of acoustic vector sensor array, comprising:
Array element response estimation unit is used to calculate the array response estimated result of described spectra of acoustic vector sensor array to the incoming wave signal, and described array response estimated result is decomposed, and obtains the array element response estimated result of each array element in the described spectra of acoustic vector sensor array;
Arrival bearing and channel error estimation unit, be used for each array element to described spectra of acoustic vector sensor array, ignore array element under the situation of sum of errors site error, according to described array element response estimated result, estimate the incoming wave sense and the channel error of described each array element;
Towards the estimation error unit, be used for for each array element, under the situation of the site error of ignoring array element, estimated result according to the channel error of the array element response estimated result of the estimated result of the incoming wave sense of reference array element, described each array element and described each array element, estimate described each array element towards error, described reference array element is an optional array element from all array elements of described spectra of acoustic vector sensor array;
The site error estimation unit, be used for estimating the sensor position uncertainties of described each array element according to the estimated result of the channel error of the array element of the estimated result of the incoming wave sense of described reference array element, described each array element response estimated result, described each array element and the estimated result towards error of described each array element.
Preferably, in the above-mentioned error estimation device, described array element response estimation unit comprises:
The received signal extraction unit is used for the carrier frequency according to the described incoming wave signal that obtains in advance, and described incoming wave signal is carried out coherent demodulation, extracts the received signal that obtains described incoming wave signal correspondence;
The array response estimation unit, be used to calculate the autocorrelation matrix of the received signal of described incoming wave signal correspondence, and described autocorrelation matrix carried out characteristic value decomposition one time, choose the array response estimated result of eigenvalue of maximum characteristic of correspondence vector as described incoming wave signal.
Preferably, in the above-mentioned error estimation device, described arrival bearing and channel error estimation unit comprise:
First structural unit is used for described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal;
First processing unit, be used for the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
Preferably, in the above-mentioned error estimation device, describedly comprise towards the estimation error unit:
Second structural unit, be used for for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Second processing unit, be used for the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
Preferably, in the above-mentioned error estimation device, described site error estimation unit comprises:
The 3rd structural unit, be used for according to the array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element site error, the tri-array flow pattern of structure incoming wave signal towards the estimated result of error and unknown described each array element;
The 3rd processing unit, be used for the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
From the above as can be seen, the error estimation of spectra of acoustic vector sensor array provided by the invention and device, need not transmitting terminal and send reference signal, also need not to produce reference signal at receiving terminal, can realize the estimation of array error, thereby simplified the hardware system of estimation error, and avoided the interference of reference signal proper communication.And the present invention not only can estimate the channel error of aerial array, simultaneously can also estimate to obtain the site error of array element and towards error.Simultaneously, the present invention also by to dissimilar error separate processes, has simplified model of error estimate, has reduced operand.
Description of drawings
Fig. 1 is the structural representation of 3 line sensor in the spectra of acoustic vector sensor array;
Fig. 2 is the structural representation of 3 annular sensor in the spectra of acoustic vector sensor array;
Fig. 3 is the schematic flow sheet of the error estimation of the described spectra of acoustic vector sensor array of the embodiment of the invention;
Fig. 4 is the example schematic of structure array flow pattern in the embodiment of the invention;
Fig. 5 is the structural representation of the error estimation device of the described spectra of acoustic vector sensor array of the embodiment of the invention.
Embodiment
Prior art is generally considered the absolute error of spectra of acoustic vector sensor array.Absolute error is meant the difference between antenna-array response and the ideal response.Can reach the purpose of array calibration to the estimation of aerial array absolute error and compensation.Same, as also can to reach array calibration to the estimation and the compensation of aerial array relative error purpose.After relative error was compensated, identical error appearred in the entire antenna array.In fact this error can of equal value regard the unknown decay of wireless channel transmission as, thereby can estimate in the subsequent treatment of receiving terminal, can not influence wave beam formation and arrival bearing's assessment function in the aerial array.
Based on above consideration, the present invention only considers the relative error of aerial array.The error pattern of the array element that the present invention considered comprises:
Channel error: refer to that gain error appears in each transducer of each array element, consider complex gain, can be further divided into amplitude response sum of errors phase response error.
Site error: refer to that array element departs from the integral shift of its correct installation site, its installation site can be described with three-dimensional coordinate, and then site error can be represented the deviation of each reference axis respectively with 3 parametric descriptions.
Towards error: refer to the rotation of its correct installation site of array element deviation, generally can be decomposed into the rotation on x-y plane and the rotation on x-z plane.Therefore can be with two parametric descriptions towards error.Wherein, x, y, z are meant three axles of three-dimensional coordinate respectively.
The error that array element occurs is the comprehensive of above-mentioned error.
Below with reference to accompanying drawing, the present invention is further illustrated by specific embodiment.
As shown in Figure 3, the error estimation of the described spectra of acoustic vector sensor array of the embodiment of the invention may further comprise the steps:
Here, in the above-mentioned steps 31, the described spectra of acoustic vector sensor array of described calculating specifically comprises the array response estimated result of incoming wave signal:
Step 311, carrier frequency according to the described incoming wave signal that obtains in advance, described incoming wave signal is carried out coherent demodulation, extraction obtains the received signal of described incoming wave signal correspondence, concrete grammar can be, incoming wave signal and carrier signal are multiplied each other, and the low pass filter that equals the incoming wave signal bandwidth through a bandwidth carries out filtering again, promptly obtains the received signal of described incoming wave signal correspondence after the filtering.
Step 312 is calculated the autocorrelation matrix of the received signal of described incoming wave signal correspondence, and described autocorrelation matrix is carried out characteristic value decomposition one time, chooses the array response estimated result of eigenvalue of maximum characteristic of correspondence vector as described incoming wave signal.
Above-mentioned steps 32 specifically comprises:
Step 321 is to described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal.
Step 322, with the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
Above-mentioned steps 33 specifically comprises:
Step 331, for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Step 332, with the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
Above-mentioned steps 34 specifically comprises:
Step 341, according to the site error towards the estimated result of error and unknown described each array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element, the tri-array flow pattern of structure incoming wave signal;
Step 342, with the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
In the above-mentioned steps 32～34, all be with parameter to be found the solution as variable, structure array flow pattern; Find the solution the angle between these two vectors of array flow pattern and array element response estimated result then, this angle as target function, is found the solution the value of the variable in the array flow pattern when target function is got minimum value, promptly obtain the estimated result of parameter to be found the solution.For helping to understand the present invention, below introduce the make of array flow pattern:
Please refer to Fig. 4, suppose that the incoming signal among Fig. 4 is an incoming wave signal.In the 3 D auto space, the angle of arrival that arrives the plane wave of an aerial array can be described with two angles among Fig. 4, and wherein θ is the angle of incoming signal between projection on the x-y plane and x axle, is called the azimuth again,
Be the angle between incoming signal and the x-y plane, be called the elevation angle again.
If all array elements of aerial array are vector sensors shown in Figure 1, then the gain of each transducer is relevant with arrival bearing, for example supposes that there is an array element at the initial point place, can be expressed as in the received signal that does not have this array element under the situation of noise:
When there was error in array element, the array flow pattern correspondingly was revised as
Wherein B, C, D represent the channel error matrix of array element respectively, towards error matrix and site error matrix, so the array flow pattern can be expressed as incoming wave sense and the error combined effect to the array element gain.
In the above-mentioned steps 32, ignore array element under the situation of sum of errors site error, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal, promptly the first array flow pattern is:
In the above-mentioned steps 33, the structure second array flow pattern under the situation of the site error of ignoring array element, this moment, the second array flow pattern was
Wherein B has been a known parameters.
The tri-array flow pattern of structure is in the above-mentioned steps 34
Wherein B, C all are known parameters.
In the above-mentioned steps 32～34, all need to find the solution the value that angle is got the minimum value variations per hour, can find the solution, repeat no more according to mathematics method for solving of the prior art.
Among the present invention; spectra of acoustic vector sensor array can receive a plurality of incoming wave signals usually; can carry out above-mentioned processing respectively this moment according to a plurality of incoming wave signals; promptly at each incoming wave signal; all obtain the angle between two vectors of the corresponding estimated result of array flow pattern and array element; be target function with all angle sums then, find the solution the target function value value of the known variables in hour array flow pattern, obtain the estimated result of relevant variable.
From the above as can be seen, the described error estimation of the embodiment of the invention, need not transmitting terminal and send reference signal, also need not to produce reference signal at receiving terminal, can realize the estimation of array error, thereby simplified the hardware system of estimation error, and avoided the interference of reference signal proper communication.The described error estimation of the embodiment of the invention not only can be estimated the channel error of aerial array, can also estimate to obtain the site error of array element simultaneously and towards error.Simultaneously, the embodiment of the invention has been simplified model of error estimate by to dissimilar error separate processes, has reduced operand.
Based on the error estimation of above-mentioned spectra of acoustic vector sensor array, the embodiment of the invention also provides a kind of error estimation device of spectra of acoustic vector sensor array.As shown in Figure 5, described error estimation device comprises:
Array element response estimation unit is used to calculate the array response estimated result of described spectra of acoustic vector sensor array to the incoming wave signal, and described array response estimated result is decomposed, and obtains the array element response estimated result of each array element in the described spectra of acoustic vector sensor array;
Arrival bearing and channel error estimation unit, be used for each array element to described spectra of acoustic vector sensor array, ignore array element under the situation of sum of errors site error, according to described array element response estimated result, estimate the incoming wave sense and the channel error of described each array element;
Towards the estimation error unit, be used for for each array element, under the situation of the site error of ignoring array element, estimated result according to the channel error of the array element response estimated result of the estimated result of the incoming wave sense of reference array element, described each array element and described each array element, estimate described each array element towards error, described reference array element is an optional array element from all array elements of described spectra of acoustic vector sensor array;
The site error estimation unit, be used for estimating the sensor position uncertainties of described each array element according to the estimated result of the channel error of the array element of the estimated result of the incoming wave sense of described reference array element, described each array element response estimated result, described each array element and the estimated result towards error of described each array element.
Wherein, described array element response estimation unit comprises:
The received signal extraction unit is used for the carrier frequency according to the described incoming wave signal that obtains in advance, and described incoming wave signal is carried out coherent demodulation, extracts the received signal that obtains described incoming wave signal correspondence;
The array response estimation unit, be used to calculate the autocorrelation matrix of the received signal of described incoming wave signal correspondence, and described autocorrelation matrix carried out characteristic value decomposition one time, choose the array response estimated result of eigenvalue of maximum characteristic of correspondence vector as described incoming wave signal.
Wherein, described arrival bearing and channel error estimation unit comprise:
First structural unit is used for described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal;
First processing unit, be used for the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
Wherein, describedly comprise towards the estimation error unit:
Second structural unit, be used for for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Second processing unit, be used for the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
Wherein, described site error estimation unit comprises:
The 3rd structural unit, be used for according to the array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element site error, the tri-array flow pattern of structure incoming wave signal towards the estimated result of error and unknown described each array element;
The 3rd processing unit, be used for the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the error estimation of a spectra of acoustic vector sensor array is characterized in that, comprising:
Steps A is calculated the array response estimated result of described spectra of acoustic vector sensor array to the incoming wave signal, and described array response estimated result is decomposed, and obtains the array element response estimated result of each array element in the described spectra of acoustic vector sensor array;
Step B, to each array element in the described spectra of acoustic vector sensor array, ignore array element under the situation of sum of errors site error, according to described array element response estimated result, estimate the incoming wave sense and the channel error of described each array element;
Step C, for each array element, under the situation of the site error of ignoring array element, estimated result according to the channel error of the array element response estimated result of the estimated result of the incoming wave sense of reference array element, described each array element and described each array element, estimate described each array element towards error, described reference array element is an optional array element from all array elements of described spectra of acoustic vector sensor array;
Step D, according to the estimated result of the channel error of the array element response estimated result of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element and the estimated result towards error of described each array element, estimate the sensor position uncertainties of described each array element.
2. error estimation as claimed in claim 1 is characterized in that, in the described steps A, the described spectra of acoustic vector sensor array of described calculating comprises the array response estimated result of incoming wave signal:
Steps A 1 according to the carrier frequency of the described incoming wave signal that obtains in advance, is carried out coherent demodulation to described incoming wave signal, extracts the received signal that obtains described incoming wave signal correspondence;
Steps A 2 is calculated the autocorrelation matrix of the received signal of described incoming wave signal correspondence, and described autocorrelation matrix is carried out characteristic value decomposition one time, chooses the array response estimated result of eigenvalue of maximum characteristic of correspondence vector as described incoming wave signal.
3. error estimation as claimed in claim 1 is characterized in that, described step B comprises:
Step B1 is to described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal;
Step B2, with the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
4. error estimation as claimed in claim 3 is characterized in that, described step C comprises:
Step C1, for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Step C2, with the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
5. error estimation as claimed in claim 3 is characterized in that, described step D comprises:
Step D1, according to the array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element site error, the tri-array flow pattern of structure incoming wave signal towards the estimated result of error and unknown described each array element;
Step D2, with the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
6. the error estimation device of a spectra of acoustic vector sensor array is characterized in that, comprising:
Array element response estimation unit is used to calculate the array response estimated result of described spectra of acoustic vector sensor array to the incoming wave signal, and described array response estimated result is decomposed, and obtains the array element response estimated result of each array element in the described spectra of acoustic vector sensor array;
Arrival bearing and channel error estimation unit, be used for each array element to described spectra of acoustic vector sensor array, ignore array element under the situation of sum of errors site error, according to described array element response estimated result, estimate the incoming wave sense and the channel error of described each array element;
Towards the estimation error unit, be used for for each array element, under the situation of the site error of ignoring array element, estimated result according to the channel error of the array element response estimated result of the estimated result of the incoming wave sense of reference array element, described each array element and described each array element, estimate described each array element towards error, described reference array element is an optional array element from all array elements of described spectra of acoustic vector sensor array;
The site error estimation unit, be used for estimating the sensor position uncertainties of described each array element according to the estimated result of the channel error of the array element of the estimated result of the incoming wave sense of described reference array element, described each array element response estimated result, described each array element and the estimated result towards error of described each array element.
7. error estimation device as claimed in claim 6 is characterized in that,
Described array element response estimation unit comprises:
The received signal extraction unit is used for the carrier frequency according to the described incoming wave signal that obtains in advance, and described incoming wave signal is carried out coherent demodulation, extracts the received signal that obtains described incoming wave signal correspondence;
The array response estimation unit, be used to calculate the autocorrelation matrix of the received signal of described incoming wave signal correspondence, and described autocorrelation matrix carried out characteristic value decomposition one time, choose the array response estimated result of eigenvalue of maximum characteristic of correspondence vector as described incoming wave signal.
8. error estimation device as claimed in claim 6 is characterized in that,
Described arrival bearing and channel error estimation unit comprise:
First structural unit is used for described each array element, according to the channel error of the incoming wave sense of described each array element of the unknown and unknown described each array element, the first array flow pattern of structure incoming wave signal;
First processing unit, be used for the array element of described each array element response estimated result and the described first array flow pattern two vectors as hyperspace, find the solution the angle value of hour incoming wave sense and channel error between these two vectors, obtain the estimated result of incoming wave sense of described each array element and the estimated result of channel error.
9. error estimation device as claimed in claim 6 is characterized in that,
Describedly comprise towards the estimation error unit:
Second structural unit, be used for for described each array element, according to the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element and unknown described each array element towards error, the second array flow pattern of structure incoming wave signal;
Second processing unit, be used for the array element of described each array element response estimated result and the described second array element flow pattern two vectors as hyperspace, find the solution angle between these two vectors hour towards the value of error, obtain the estimated result towards error of described each array element.
10. error estimation device as claimed in claim 6 is characterized in that,
Described site error estimation unit comprises:
The 3rd structural unit, be used for according to the array element of the estimated result of the channel error of the estimated result of the incoming wave sense of described reference array element, described each array element, described each array element site error, the tri-array flow pattern of structure incoming wave signal towards the estimated result of error and unknown described each array element;
The 3rd processing unit, be used for the array element of described each array element response estimated result and described tri-array flow pattern two vectors as hyperspace, find the solution the angle value of hour site error between these two vectors, obtain the estimated result of the site error of described each array element.
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Cited By (2)
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|---|---|---|---|---|
| CN102401888A (en) * | 2011-08-24 | 2012-04-04 | 西安电子科技大学 | Method for self-correcting coupling error of electromagnetic vector sensor array |
| WO2012171170A1 (en) * | 2011-06-13 | 2012-12-20 | 华为技术有限公司 | Method and device for transmitting and receiving control information in uplink multi-antenna system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198693B1 (en) * | 1998-04-13 | 2001-03-06 | Andrea Electronics Corporation | System and method for finding the direction of a wave source using an array of sensors |
| CN1580813A (en) * | 2004-05-17 | 2005-02-16 | 中国人民解放军空军雷达学院 | Method for conducting array corrction and information source direction finding by using high precision auxiliary array element |
| CN1852276A (en) * | 2006-06-07 | 2006-10-25 | 北京北方烽火科技有限公司 | Method for reducing channel evaluated error utilizing space wave filter |
| CN101436890A (en) * | 2008-12-10 | 2009-05-20 | 中国移动通信集团广东有限公司 | Method and equipment for estimating antenna array error parameter |
-
2009
- 2009-11-23 CN CN 200910237740 patent/CN102075302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198693B1 (en) * | 1998-04-13 | 2001-03-06 | Andrea Electronics Corporation | System and method for finding the direction of a wave source using an array of sensors |
| CN1580813A (en) * | 2004-05-17 | 2005-02-16 | 中国人民解放军空军雷达学院 | Method for conducting array corrction and information source direction finding by using high precision auxiliary array element |
| CN1852276A (en) * | 2006-06-07 | 2006-10-25 | 北京北方烽火科技有限公司 | Method for reducing channel evaluated error utilizing space wave filter |
| CN101436890A (en) * | 2008-12-10 | 2009-05-20 | 中国移动通信集团广东有限公司 | Method and equipment for estimating antenna array error parameter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171170A1 (en) * | 2011-06-13 | 2012-12-20 | 华为技术有限公司 | Method and device for transmitting and receiving control information in uplink multi-antenna system |
| CN103004240A (en) * | 2011-06-13 | 2013-03-27 | 华为技术有限公司 | Method and device for transmitting and receiving control information in uplink multi-antenna system |
| CN103004240B (en) * | 2011-06-13 | 2015-09-30 | 华为技术有限公司 | A kind of control information transmission method of uplink multiaerial system, device and method of reseptance, device |
| CN102401888A (en) * | 2011-08-24 | 2012-04-04 | 西安电子科技大学 | Method for self-correcting coupling error of electromagnetic vector sensor array |
| CN102401888B (en) * | 2011-08-24 | 2013-10-23 | 西安电子科技大学 | Method for self-correcting coupling error of electromagnetic vector sensor array |
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| CN102075302B (en) | 2013-04-24 |
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