CN102629161A - Cursor control device and method - Google Patents

Cursor control device and method Download PDF

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Publication number
CN102629161A
CN102629161A CN2012100479483A CN201210047948A CN102629161A CN 102629161 A CN102629161 A CN 102629161A CN 2012100479483 A CN2012100479483 A CN 2012100479483A CN 201210047948 A CN201210047948 A CN 201210047948A CN 102629161 A CN102629161 A CN 102629161A
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transmitter
receiver
target object
cursor
cursor control
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CN102629161B (en
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胡波平
李烨
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Zhuhai Institute Of Advanced Technology Chinese Academy Of Sciences Co ltd
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Shenzhen Institute of Advanced Technology of CAS
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Abstract

The invention relates to a cursor control device which comprises a transmitter, receivers, a computation module and a conversion module. The transmitter is used for transmitting an ultra wide band radar signal; at least two receivers are provided, are distributed at the positions at equal distances to the transmitter and are used for receiving the ultra wide band radar signal; the computation module is used for computing position coordinates of a target object according to difference of time that different receivers receive the ultra wide band radar signal and the distance between the transmitter and the receivers; and the conversion module is used for changing and converting the position coordinates of the target object into a movement and click control signal of a mouse cursor. The invention also provides a corresponding cursor control method. Through the adoption of the cursor control device and the cursor control method, under the condition that people have lessons in a classroom or the distance between people and a machine is long, the transmitter and the receivers can be placed at proper positions so as to realize non-contact control on the movement and click operation of the mouse cursor; and the cursor control device not only cannot be abraded, but also is convenient to operate.

Description

Cursor control device and method
[technical field]
The present invention relates to electronic product control technology field, particularly relate to a kind of control device and method that is used to control similar cursor of mouse.
[background technology]
Computer technology is able to develop rapidly, and mouse is to perform meritorious deeds never to be obliterated.Be accompanied by being rooted in the hearts of the people of embedded calculating and general fit calculation theory, touch screen technology replaces mouse gradually and forms the main man-machine interaction window into people on portable terminal.Be that mouse all needs the direct of staff to contact with touch-screen, simultaneously also all in various degree be attended by mechanical wearing and tearing and consumption, make the two all become consumptive material and have to often change, cause the waste of resource.Simultaneously when the teacher taught or explains and publicises lantern slide, people need be more prone to interactive input mode, this all be common mouse and touch-screen can not accomplish.And use the general volume of equipment of laser mode all bigger, simultaneously because laser generator need consume lot of energy, use in daily life to seem economical inadequately.
Traditional mouse, equipment operating distances such as touch-screen are all shorter, on the input demand of some moderate distance, can not satisfy, and give a lesson lantern slide explanation etc. like the teacher.Mouse need contact with substrate, imports according to the variation of substrate through friction between spin and the substrate or photoelectricity; Yet under some people disembarks device occasion far away, be not suitable for being provided with such substrate, mouse just will lose effectiveness.
Traditional input equipment relies on mechanical pushing mostly, and modes such as friction are accomplished the collection of signal; These methods inevitably are attended by mechanical wear, make product shorten greatly serviceable life.Simultaneously traditional resistive touch screen usually need be located with acquisition than the input of great more accurately, makes touch screen surface usually stay ugly cut, has both influenced display effect, also causes the mistake of input equipment itself accurate simultaneously.
[summary of the invention]
Based on this, be necessary to provide a kind of cursor control device and method that need not operating of contacts.
A kind of cursor control device comprises transmitter, receiver, computing module and modular converter,
Said transmitter is used to launch ultra-wideband radar signal;
Said receiver has two at least, and distributed and arranged with the equidistant position of said transmitter, be used to receive said ultra-wideband radar signal;
Said computing module is used for receiving the mistiming of said ultra-wideband radar signal and the distance of said transmitter and said receiver according to the said receiver of difference, calculates the position coordinates of target object;
Said modular converter is used for the position coordinates variation of said target object is converted into moving of cursor of mouse and clicks control signal.
In a preferred embodiment, said receiver has two, be distributed in the both sides of said transmitter respectively, and the three point-blank.
In a preferred embodiment, said computing module through following system of equations calculate target object position coordinates (x, y):
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and said receiver, and d is the distance of said transmitter and said receiver.
In a preferred embodiment, said modular converter is used for moving of mouse beacon cursor through the direction and the speed of the variation judgement target object paddling of x; Reach pre-set threshold value through y is mobile in the given time, then think the click action.
In a preferred embodiment, said receiver has four, and is distributed in four equidistant positions all around of said transmitter.
A kind of cursor control method comprises the steps:
A ultra-wideband radar signal transmitter is set;
At least two and the equidistant radar signal receiver of said transmitter are set;
Said transmitter emission ultra-wideband radar signal;
Said receiver receives said ultra-wideband radar signal;
Receive the mistiming of said ultra-wideband radar signal and the distance of said transmitter and said receiver according to the said receiver of difference, calculate the position coordinates of target object;
The position coordinates variation of said target object is converted into moving of cursor of mouse and clicks control signal.
In a preferred embodiment, said receiver has two, be distributed in the both sides of said transmitter respectively, and the three point-blank.
In a preferred embodiment, the position coordinates of said target object calculates through following system of equations:
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and said receiver, and d is the distance of said transmitter and said receiver, calculate target object position coordinates (x, y).
In a preferred embodiment, it is to judge the direction and the speed of target object paddling through the variation of x that said position coordinates with said target object changes the step that moves and click control signal that is converted into cursor of mouse, is used for moving of mouse beacon cursor; Reach pre-set threshold value through y is mobile in the given time, then think the click action.
In a preferred embodiment, said receiver has four, is distributed in four equidistant positions all around of said transmitter.
Through above-mentioned cursor control device and method; Under the situation that give a lesson in the classroom or man-machine distance is far away, just can transmitter and receiver be placed in position, realize moving and click action of non-contact type mouse beacon cursor; Neither can cause wearing and tearing, and easy to operate.
[description of drawings]
Fig. 1 is the functional block diagram of the cursor control device of an embodiment;
Fig. 2 is the arrangement synoptic diagram of emitting antenna and receiving antenna in the cursor control device shown in Figure 1;
Fig. 3 is another arrangement synoptic diagram of emitting antenna and receiving antenna in the cursor control device shown in Figure 1;
Fig. 4 is the cursor control method process flow diagram of an embodiment.
[embodiment]
In order to solve wearing and tearing and the awkward problem that conventional mouse and touch screen operation bring, a kind of cursor control device and method that need not operating of contacts proposed.
(UltrawideBand, UWB) radar fix technology is basis of the present invention to ultra broadband.Here why select for use ULTRA-WIDEBAND RADAR mainly to consider the sensitizing range appearance not of uniform size of different its demands of use scene of system.For normal radar; Its bandwidth is narrower; The resolution of radar and the relation between the bandwidth are roughly:
Figure BDA0000139183880000041
in the formula: B is a signal bandwidth, and c is the aerial velocity of propagation of radar signal (approximating the light velocity).It is thus clear that signal bandwidth is wide more, the resolution of radar is then high more.And under (in 1 meter) application scenarios closely; The electric wave flight time:
Figure BDA0000139183880000042
and will differentiate a plurality of pulses during this period; Then require pulse width to be worth, have only ultra-broadband signal can reach such requirement much smaller than this.In the zone of action about 0.5 meter, the electric wave flight time was 3.3 nanoseconds; Reserve a boundary belt to waveform, according to 50% dutycycle (otherwise can't identification signal along), then pulse width must be about 1.5 nanoseconds, and corresponding frequency span is 1.5GHz.
The radar receiving unit compares the time delay that judges whether to receive reflection wave and emission generation through direct incoming wave with transmitted wave and reception.Yet this process is not carried out immediately, but through a bit of time delay.This time delay is called as range gate.Through setting the different distances door, we can set interested distance range.Promptly through the adjustment range gate just the scalable area-of-interest apart from the distance of radar.The user can regulate this parameter according to self custom and posture, makes operation more smoothly.Such as 3 nanoseconds of time-delay can be set, the user can operate apart from 0.5 meter of radar.
Realize through range finding and direction finding usually the ULTRA-WIDEBAND RADAR location; Mainly contain: based on receiving signal intensity (RSS:Received Signal Strength), based on the angle of arrival (AOA:Angle of Arrival) with based on three kinds of methods time of arrival (TOA/TDOA:Time/Time Difference of Arrival).Wherein the TOA/TDOA method is the basis to arrive the time delay estimation theory, and the ultra-broadband signal occupied bandwidth is very big, and temporal resolution is high, thereby this method best embodies out the superiority of radio ultra wide band system.Method based on the angle of arrival belongs to direction finding technology, needs technology such as multi-antenna array or beam shaping, and the system equipment cost is higher, and its bearing accuracy depends on the estimation that arrives the wave angle degree; Then depend on the model of path loss based on the method that receives signal intensity, its precision is relevant with detection range, and to channel circumstance sensitivity, reliability is not strong.By contrast, based on the method for time of arrival, calculate the range difference of transmitting-receiving two-end through estimated signal difference time of arrival.Make full use of the characteristics of radio ultra wide band system signal high time resolution, unite the deficiency of using above-mentioned several method more can improve positioning performance or improving the locating source geometric distributions simultaneously.The general system architecture of using single-shot to overcharge in ULTRA-WIDEBAND RADAR location, i.e. emitting antenna, a plurality of receiving antennas.
As shown in Figure 1, it is the functional block diagram of the cursor control device 100 of an embodiment, comprising: transmitter 110, receiver 120, computing module 130 and modular converter 140.
Transmitter 110 is used to launch ultra-wideband radar signal.
Receiver 120 has two at least, and distributed and arranged with said transmitter 110 equidistant positions, be used to receive said ultra-wideband radar signal.
Computing module 130 is used for receiving the mistiming of said ultra-wideband radar signal and the distance of transmitter and receiver according to different receivers 120, calculates the position coordinates of target object.
Modular converter 140 is used for the position coordinates variation of target object is converted into moving of cursor of mouse and clicks control signal.
Among one embodiment, receiver 120 has two, be distributed in the both sides of transmitter 110 respectively, and the three point-blank.
Please consult Fig. 2 simultaneously, the emitting antenna of transmitter 110 is positioned at horizontal ordinate, and (x, round dot y), the receiving antenna of two receivers 120 are positioned on the X axle large circle point distance and are the both sides of d.Suppose the user through arm control, then the target object among Fig. 2 is an arm, and the distance between target object and two receiving antennas is respectively R1 and R2.
Computing module 130 can calculate through following system of equations:
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and receiver 120, and d is the distance of transmitter 110 (emitting antenna) and receiver 120 (receiving antenna).So just can calculate target object position coordinates (x, y).Refresh the coordinates of targets position at interval with certain hour, compare the direction of motion and the speed that can obtain target.Because radar signal is directive, and in actual the use, y is the situation that negative can not occur.
Modular converter 140 can be judged the direction and the speed of target object paddling through the variation of x, is used for moving of mouse beacon cursor; Can be through y numerical value acute variation (threshold determination is set) from top to bottom, promptly y moves in the given time and reaches pre-set threshold value, then thinks the click action.Transform mode has much here, no longer enumerates here.
Among other embodiment, receiver 120 also can be three, four or more, and for the ease of calculating, four receivers 120 use more convenient.As shown in Figure 3, it is for having four receivers 120, i.e. the layout synoptic diagram of four receiving antennas.Four receiving antennas are distributed in four equidistant positions all around of emitting antenna, and emitting antenna is positioned at the coordinate round dot in other words, and four receiving antennas are separately positioned on the positive and negative XY coordinate axis.Repeat the aforementioned calculation process like this and just can obtain the Three-dimension Target movement locus, realize accurately location.Afterwards, only need movement locus is mapped on the display screen, can accomplish the function that touches input and handwriting input.Be used for moving of mouse beacon cursor as the parameter of any two coordinate axis of target object is changed, another one changes in coordinates degree is as action such as clicking or push.
Cursor control device 100 all need carry out necessary calibration operation when first the use or after using a period of time.In order to make the position of staff necessarily can be recognized by system; Earlier hand (target object) is hovered over the centre position of display screen; Whether the position of mouse icon is in the screen centre on the view screen; Whether all can be at rolling mouse behind center Screen, through the position of click action affirmation intermediate point, the position of four jiaos of each points of positioned in sequence then.To generate new configuration file after the completion, and preserve and override old configuration file, accomplish calibration.
Through above-mentioned cursor control device 100, under the situation that give a lesson in the classroom or man-machine distance is far away, just can transmitter 110 and receiver 120 be placed in position, realize moving and click action of non-contact type mouse beacon cursor.As being used in operations such as passing through gesture control PPT on the dais, effective orientation range that the operator does not leave radar signal gets final product, as not leaving the dais.Compare traditional laser locating apparatus, the bulky heaviness of laser locating apparatus can't apply on the small and exquisite embedded device.And that the mode that radar signal is provided in this case can be done is very small and exquisite, can be portable.This shows that the control mode of this case neither can cause wearing and tearing, and advantages of small volume, and is easy to operate.
As shown in Figure 4, it is the cursor control method process flow diagram of an embodiment, comprises the steps:
Step S401 is provided with a ultra-wideband radar signal transmitter.
Step S402 is provided with at least two and the equidistant radar signal receiver of transmitter.
Step S403, said transmitter emission ultra-wideband radar signal.
Step S404, said receiver receives ultra-wideband radar signal.
Step S405 receives the mistiming of said ultra-wideband radar signal and the distance of transmitter and receiver according to different receivers, calculates the position coordinates of target object.
Step S406, with the position coordinates of target object change be converted into cursor of mouse move and click control signal.
Among one embodiment, receiver has two, be distributed in the both sides of transmitter respectively, and the three point-blank.Step S405 can calculate through following system of equations:
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and receiver, and d is the distance of transmitter and receiver.So just can calculate target object position coordinates (x, y).Refresh the coordinates of targets position at interval with certain hour, compare the direction of motion and the speed that can obtain target.Because radar signal is directive, and in actual the use, y is the situation that negative can not occur.
Step S406 can judge the direction and the speed of target object paddling through the variation of x, is used for moving of mouse beacon cursor; Can be through y numerical value acute variation (threshold determination is set) from top to bottom, promptly y moves in the given time and reaches pre-set threshold value, then thinks the click action.
Among other embodiment, receiver also can be three, four or more, and for the ease of calculating, four receivers use more convenient.Four receiving antennas are distributed in four equidistant positions all around of emitting antenna, and emitting antenna is positioned at the coordinate round dot in other words, and four receiving antennas are separately positioned on the positive and negative XY coordinate axis.Repeat the aforementioned calculation process like this and just can obtain the Three-dimension Target movement locus, realize accurately location.Afterwards, only need movement locus is mapped on the display screen, can accomplish the function that touches input and handwriting input.Be used for moving of mouse beacon cursor as the parameter of any two coordinate axis of target object is changed, another one changes in coordinates degree is as action such as clicking or push.
Through above-mentioned cursor control method, under the situation that give a lesson in the classroom or man-machine distance is far away, just can transmitter and receiver be placed in position, realize moving and click action of non-contact type mouse beacon cursor.As being used in operations such as passing through gesture control PPT on the dais, effective orientation range that the operator does not leave radar signal gets final product, as not leaving the dais.Compare traditional laser locating apparatus, the bulky heaviness of laser locating apparatus can't apply on the small and exquisite embedded device.And that the mode that radar signal is provided in this case can be done is very small and exquisite, can be portable.This shows that the control mode of this case neither can cause wearing and tearing, and advantages of small volume, and is easy to operate.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.

Claims (10)

1. a cursor control device is characterized in that, it comprises transmitter, receiver, computing module and modular converter,
Said transmitter is used to launch ultra-wideband radar signal;
Said receiver has two at least, and distributed and arranged with the equidistant position of said transmitter, be used to receive said ultra-wideband radar signal;
Said computing module is used for receiving the mistiming of said ultra-wideband radar signal and the distance of said transmitter and said receiver according to the said receiver of difference, calculates the position coordinates of target object;
Said modular converter is used for the position coordinates variation of said target object is converted into moving of cursor of mouse and clicks control signal.
2. cursor control device according to claim 1 is characterized in that, said receiver has two, be distributed in the both sides of said transmitter respectively, and the three point-blank.
3. cursor control device according to claim 1 is characterized in that, said computing module through following system of equations calculate target object position coordinates (x, y):
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and said receiver, and d is the distance of said transmitter and said receiver.
4. cursor control device according to claim 4 is characterized in that, said modular converter is used for moving of mouse beacon cursor through the direction and the speed of the variation judgement target object paddling of x; Reach pre-set threshold value through y is mobile in the given time, then think the click action.
5. cursor control device according to claim 1 is characterized in that said receiver has four, and is distributed in four equidistant positions all around of said transmitter.
6. a cursor control method is characterized in that, comprises the steps:
A ultra-wideband radar signal transmitter is set;
At least two and the equidistant radar signal receiver of said transmitter are set;
Said transmitter emission ultra-wideband radar signal;
Said receiver receives said ultra-wideband radar signal;
Receive the mistiming of said ultra-wideband radar signal and the distance of said transmitter and said receiver according to the said receiver of difference, calculate the position coordinates of target object;
The position coordinates variation of said target object is converted into moving of cursor of mouse and clicks control signal.
7. cursor control method according to claim 6 is characterized in that, said receiver has two, be distributed in the both sides of said transmitter respectively, and the three point-blank.
8. cursor control method according to claim 6 is characterized in that, the position coordinates of said target object calculates through following system of equations:
( x - d ) 2 + y 2 = R 2 2 ( x + d ) 2 + y 2 = R 1 2
x = R 1 2 - R 2 2 4 d y = | ( R 2 2 - ( d - x ) 2 ) |
Wherein R1 and R2 are the distance of target object and said receiver, and d is the distance of said transmitter and said receiver, calculate target object position coordinates (x, y).
9. cursor control method according to claim 8; It is characterized in that; It is to judge the direction and the speed of target object paddling through the variation of x that said position coordinates with said target object changes the step that moves and click control signal that is converted into cursor of mouse, is used for moving of mouse beacon cursor; Reach pre-set threshold value through y is mobile in the given time, then think the click action.
10. cursor control method according to claim 6 is characterized in that said receiver has four, is distributed in four equidistant positions all around of said transmitter.
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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN107329118A (en) * 2017-05-19 2017-11-07 中南大学 A kind of high-amplitude picosecond micropower UWB radar detection system
CN107450065A (en) * 2017-08-07 2017-12-08 中国民航大学 A kind of inexpensive SUAV surveillance radar
CN107506033A (en) * 2017-08-18 2017-12-22 广州视源电子科技股份有限公司 Control method, device, intelligent instructional device and the storage medium of presentation of information
CN108663664A (en) * 2017-03-28 2018-10-16 通用汽车环球科技运作有限责任公司 Tool for automatic more radar calibrations
CN109885228A (en) * 2019-01-14 2019-06-14 珠海金山网络游戏科技有限公司 A method of contact action is carried out to display device based on radar
CN113093924A (en) * 2021-04-07 2021-07-09 Oppo广东移动通信有限公司 Electronic equipment and determination method of motion trail
WO2021138836A1 (en) * 2020-01-08 2021-07-15 华为技术有限公司 Near-field estimation method and apparatus
CN116701921A (en) * 2023-08-08 2023-09-05 电子科技大学 Time-frequency characteristic extraction circuit and self-adaptive noise suppression circuit of multichannel time sequence signal

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CN1477478A (en) * 2002-08-20 2004-02-25 昆盈企业股份有限公司 Finger-moving type pointer input-method and its device
CN1719277A (en) * 2005-07-26 2006-01-11 清华大学 Detection system of space position and its detection method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108663664A (en) * 2017-03-28 2018-10-16 通用汽车环球科技运作有限责任公司 Tool for automatic more radar calibrations
CN108663664B (en) * 2017-03-28 2022-05-03 通用汽车环球科技运作有限责任公司 Tool for automatic multi-radar calibration
CN107329118A (en) * 2017-05-19 2017-11-07 中南大学 A kind of high-amplitude picosecond micropower UWB radar detection system
CN107450065A (en) * 2017-08-07 2017-12-08 中国民航大学 A kind of inexpensive SUAV surveillance radar
CN107506033A (en) * 2017-08-18 2017-12-22 广州视源电子科技股份有限公司 Control method, device, intelligent instructional device and the storage medium of presentation of information
WO2019033664A1 (en) * 2017-08-18 2019-02-21 广州视源电子科技股份有限公司 Information display control method and apparatus, and intelligent teaching device and storage medium
CN109885228A (en) * 2019-01-14 2019-06-14 珠海金山网络游戏科技有限公司 A method of contact action is carried out to display device based on radar
WO2021138836A1 (en) * 2020-01-08 2021-07-15 华为技术有限公司 Near-field estimation method and apparatus
CN113093924A (en) * 2021-04-07 2021-07-09 Oppo广东移动通信有限公司 Electronic equipment and determination method of motion trail
CN116701921A (en) * 2023-08-08 2023-09-05 电子科技大学 Time-frequency characteristic extraction circuit and self-adaptive noise suppression circuit of multichannel time sequence signal
CN116701921B (en) * 2023-08-08 2023-10-20 电子科技大学 Multi-channel time sequence signal self-adaptive noise suppression circuit

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