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CN107450546A - Obstacle Avoidance based on GPS and ultrasonic radar - Google Patents

Obstacle Avoidance based on GPS and ultrasonic radar Download PDF

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Publication number
CN107450546A
CN107450546A CN201710702689.6A CN201710702689A CN107450546A CN 107450546 A CN107450546 A CN 107450546A CN 201710702689 A CN201710702689 A CN 201710702689A CN 107450546 A CN107450546 A CN 107450546A
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CN
China
Prior art keywords
robot
ultrasonic radar
route
gps
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710702689.6A
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Chinese (zh)
Inventor
杨胜松
韩锐
王坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Krund Artificial Intelligence Technology Co Ltd
Original Assignee
Beijing Krund Artificial Intelligence Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Krund Artificial Intelligence Technology Co Ltd filed Critical Beijing Krund Artificial Intelligence Technology Co Ltd
Priority to CN201710702689.6A priority Critical patent/CN107450546A/en
Publication of CN107450546A publication Critical patent/CN107450546A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0255Control of position or course in two dimensions specially adapted to land vehicles using acoustic signals, e.g. ultra-sonic singals
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0212Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
    • G05D1/0214Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory in accordance with safety or protection criteria, e.g. avoiding hazardous areas
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0257Control of position or course in two dimensions specially adapted to land vehicles using a radar
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0276Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0276Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
    • G05D1/0278Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle using satellite positioning signals, e.g. GPS

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Acoustics & Sound (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Manipulator (AREA)

Abstract

The present invention discloses a kind of Obstacle Avoidance based on GPS and ultrasonic radar, GPS positioning unit can accurately obtain the position of robot in the method, static-obstacle thing information where robot is provided in overall situation, and ultrasonic radar can perceive robot periphery obstacle distance, the data of acquisition are only limitted to the local message of robot, pass through being used cooperatively for GPS positioning unit and ultrasonic radar data, in the case where GPS positioning unit determines roughly position avoidance is carried out using ultrasound data, all dynamics and static-obstacle thing on its periphery can effectively be avoided, so as to reach safety, accurately reach target location.And because ultrasonic radar can be distributed in around robot, robot is perceived the obstacle in surrounding environment constantly without colliding, this compensate for a certain extent GPS positioning unit due to caused by other complicated reasons positioning precision deficiency, can not avoiding dynamic barrier the shortcomings that.

Description

Obstacle Avoidance based on GPS and ultrasonic radar
Technical field
Invention is related to a kind of barrier-avoiding method, and in particular to one kind is based on GPS positioning system and ultrasonic radar joint avoidance Method.
Background technology
With the continuous enhancing of the technologies such as computing capability and sensor, the function of outdoor patrol type and security protection humanoid robot Become increasingly to increase, at the same time, being used in mixed way for multi-sensor data also becomes increasingly various.Now, no longer office of robot It is limited to the use of single sensor, and the environment more prepared can be obtained by the mutual cooperation of multi-sensor data And posture information.The important means being used in conjunction with each other as robot localization of multi-sensor data is, it is necessary to stronger Computing capability, the development of present computer are just the machine vision on basis herein that this condition provides good basis Using gradually burning hot.
The content of the invention
In view of this, the present invention provides a kind of Obstacle Avoidance based on GPS positioning system and ultrasonic radar, should Method carries out coarse localization by GPS to the position of robot itself, then coordinates the data message of ultrasonic radar, meets outdoor Security robot positions and the needs of avoidance, is provided safeguard for robot navigation, avoidance.
The described Obstacle Avoidance based on GPS and ultrasonic radar concretely comprises the following steps:
(1) GPS positioning unit being arranged in robot obtains the current posture information of robot and is sent to control in real time Unit processed, the posture information refer to the course and position of robot;Be arranged on ultrasonic radar real time scan in robot its The environmental information of surrounding is simultaneously sent to control unit;
(2) after described control unit receives the posture information that GPS positioning unit is sent, the ground to be prestored inside it is passed through Figure determines the static-obstacle thing on robot position periphery;
After described control unit receives the environmental information that ultrasonic radar is sent, scanning range inner machine people is obtained The orientation and distance of all barriers of surrounding;The barrier includes static-obstacle thing and dynamic barrier;
(3) described control unit according to robot course, according to institute of robot determined by the map to be prestored inside it In the static-obstacle thing on position periphery and the target location of setting, target location of the planning robot from current location to setting Global route, the global route of this avoided according to the quiet of robot position periphery determined by the map to be prestored inside it State barrier;
(4) the control control unit plans a local route every setting time, and the planing method of local route is:
Described control unit is according to the speed of travel of the robot of setting, the orientation and distance of all barriers of surrounding, rule Draw local route, the local route be robot avoid being detected by ultrasonic radar in setting time its around own In all routes of barrier, the most short route of localized target point distance with setting;If the local route and institute in step (3) The global route of planning overlaps, then global route is not modified, described control unit is according to the global route control machine People is walked, and the planning of local route next time is carried out after walking to localized target point;If misaligned, described control unit foundation Local route control machine people walks, and be back to step (3) after walking to localized target point plans global route again.
Front, rear, the identical level locations in the left and right sides respectively place more than one ultrasonic radar in the robot.
When the gps signal is lost, local route control machine people's row that described control unit direct basis is planned Walk.
Beneficial effect:
GPS positioning unit can accurately obtain the position of robot, control unit is obtained its periphery according to this Static-obstacle thing;And ultrasonic radar can perceive all barriers in robot periphery (including static-obstacle thing and dynamic disorder Thing) azimuth-range, GPS and ultrasonic radar are combined, utilized in the case where GPS positioning unit determines roughly position Ultrasound data carries out avoidance, can effectively avoid all dynamics and static-obstacle thing on its periphery, safe and accurate so as to reach Arrival target location.
In the present invention, using GPS and ultrasonic radar data fusion, the safety of robot running has been ensured, has been dropped The damage risk of Di Liao robots, and task can be completed using ultrasonic radar in the case where GPS fails, it disclosure satisfy that Outdoor security robot positioning and the needs of avoidance, provide safeguard for robot navigation, avoidance.
Ultrasonic radar is easily installed in itself, and can increase or decrease quantity as desired, therefore is had and preferably may be used Transplantability, the scope of application are wider.And ultrasonic radar data can be combined with other detection of obstacles sensor returned datas Use, the positioning precision of robot is further improved, and there is higher expansion.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of this method.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present embodiment provides a kind of Obstacle Avoidance based on GPS and ultrasonic radar, by GPS and ultrasonic radar Data fusion ensure in robot running can effective avoiding obstacles, and can in the case where GPS fails profit Patrol mission is completed with ultrasonic radar, to meet the needs of outdoor security robot positioning and avoidance, for robot navigation, is kept away Barrier provides safeguard.
System used in this method mainly includes:GPS positioning unit, ultrasonic radar and the control being arranged in robot Unit.The mode that lays of wherein ultrasonic radar is the detection model and principle according to ultrasonic radar, determines its detecting distance And scope, then circumferentially placement is multiple along it for identical level locations with robot, it is contemplated that the safety of robot in itself is asked Topic, places at least four ultrasonic radars, both sides are at least each one, rear at least two in front of robot.GPS positioning unit Using the antenna of differential GPS, the antenna installation straight line of differential GPS is parallel with robot X-direction (direct of travel of robot).
GPS positioning unit is used to obtain the current posture information of robot (course and position), and ultrasonic radar is used to obtain Take the current environmental information of robot the distance between (i.e. the orientation of periphery barrier and with periphery barrier), GPS location list After the environmental information real-time delivery that the posture information of member acquisition, ultrasonic radar obtain is to control unit, control unit is to environment Information (establishes model and matchingly figure record data) after being handled to peripheral obstacle and GPS posture information coordinates To more accurate environmental information (more accurately determining the pose of robot in the environment).Control unit is to GPS location list The information that member and ultrasonic radar are obtained can obtain static, dynamic barrier in robot after being handled Information, using the mapping relations between ultrasonic radar and GPS information, provide next control that robot carries out local paths planning System instruction, so that barrier is hidden or got around in robot.
Concretely comprising the following steps for barrier is hidden or got around in robot using this method:
(1) robot is during patrol, the environmental information being arranged on around the ultrasonic radar real time scan with it (the distance between the orientation and robot of barrier opposed robots and barrier), and control unit is sent to, the frequency of scanning Rate is 10hz;GPS positioning unit obtains the posture information of robot and is sent to control unit in real time, and positioning appearance frequency is 5hz.
(2) after control unit receives the posture information that GPS positioning unit is sent, it can determine the specific position of robot Put and course heading, robot position week is then determined by the map, satellite map or the planning map that are prestored inside it The static-obstacle thing on side, the static-obstacle thing refer to the barrier that the building on periphery, plant etc. will not move.
(3) after control unit receives the data that ultrasonic radar is sent, by ultrasonic radar with robot Distribution situation, it may be determined that the orientation of robot peripheral obstacle which direction of robot (be located at) and with barrier it Between distance.
(4) static-obstacle thing and setting of the control unit according to identified robot position periphery in step (2) Robot next target location, go out a robot from current location under using Dijsktra algorithms or A* algorithmic rules The global route of one target location, the global route of this can avoid all static-obstacle things in its surrounding enviroment.
(5) control unit is according to the orientation of identified robot peripheral obstacle in step (3) and between barrier Distance, using remaining barrier as dynamic disorder after the static-obstacle thing determined by excluding step (2) around it Thing;Then control unit calculated in the velocity space of robot be possible in 0.1s by route, press and localized target That puts is distance weighted, cooks up a most short local route of distance, this local route can be avoided being examined by ultrasonic radar Dynamic, the static-obstacle thing measured;If the local route overlaps with the global route planned in step (4), without road The amendment of line;If misaligned, step (4) amendment is back to after being advanced by current local route in global route.
GPS positioning unit can accurately obtain the position of robot in the method, and ultrasonic radar can perceive Robot periphery obstacle distance, by being used cooperatively for GPS positioning unit and ultrasonic radar data, in GPS positioning system Avoidance is carried out so as to reach target location using ultrasound data in the case of rough determination position.Because ultrasonic radar can be with It is distributed in around robot, robot is perceived the obstacle in surrounding environment constantly without colliding, this is in certain journey Compensate on degree GPS positioning system due to positioning precision deficiency caused by other complicated reasons, can not avoiding dynamic barrier Shortcoming.Meanwhile the data of ultrasonic radar acquisition are only limitted to the local message of robot, and GPS positioning unit is then Positional information where robot can be provided in overall situation.Because ultrasonic radar can be evenly distributed in front of robot, Rear etc., and quantity can be expanded as needed, along with the broad applicability of GPS positioning system, the algorithm has certain Portability.
The dynamic barrier in robot can be accurately perceived due to ultrasonic radar, by algorithm In condition limitation, when obstacle distance robot is nearer can the stop motion of Shi Zhi robots, to ensure safety.GPS location System technology matures, and locating effect is preferable, and coarse localization is carried out to the position of robot itself by GPS positioning unit, then By coordinating the data message of ultrasonic radar, so as to reach safe and accurate arrival target location.And ultrasonic radar is in itself Be easily installed, and quantity can be increased or decreased as desired, thus the present invention have it is preferably portable, the scope of application compared with Extensively.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention. Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's Within protection domain.

Claims (3)

1. the Obstacle Avoidance based on GPS and ultrasonic radar, it is characterised in that concretely comprise the following steps:
(1) GPS positioning unit being arranged in robot obtains the current posture information of robot and is sent to control list in real time Member, the posture information refer to the course and position of robot;The ultrasonic radar real time scan in robot is arranged on around it Environmental information and be sent to control unit;
(2) it is true by the map to be prestored inside it after described control unit receives the posture information that GPS positioning unit is sent Determine the static-obstacle thing on robot position periphery;
After described control unit receives the environmental information that ultrasonic radar is sent, obtain around scanning range inner machine people The orientation and distance of all barriers;The barrier includes static-obstacle thing and dynamic barrier;
(3) described control unit is according to the course of robot, in place according to institute of robot determined by the map to be prestored inside it Put the static-obstacle thing on periphery and the target location of setting, target location of the planning robot from current location to setting it is complete Office's route, the global route of this avoid the static state barrier according to robot position periphery determined by the map to be prestored inside it Hinder thing;
(4) the control control unit plans a local route every setting time, and the planing method of local route is:
Described control unit is according to the speed of travel of the robot of setting, the orientation and distance of all barriers of surrounding, regional planning agency Portion's route, the local route be robot avoid being detected by ultrasonic radar in setting time its around all obstacles In all routes of thing, the most short route of localized target point distance with setting;If the local route in step (3) with being planned Global route overlap, then global route is not modified, described control unit is according to global route control machine people's row Walk, the planning of local route next time is carried out after walking to localized target point;If misaligned, described control unit is according to the office Portion route control machine people walks, and be back to step (3) after walking to localized target point plans global route again.
2. the Obstacle Avoidance based on GPS and ultrasonic radar as claimed in claim 1 or 2, it is characterised in that in institute State front in robot, rear, the identical level locations in the left and right sides respectively place more than one ultrasonic radar.
3. the Obstacle Avoidance based on GPS and ultrasonic radar as claimed in claim 1 or 2, it is characterised in that work as institute When stating gps signal loss, the local route control machine people that described control unit direct basis is planned walks.
CN201710702689.6A 2017-08-16 2017-08-16 Obstacle Avoidance based on GPS and ultrasonic radar Pending CN107450546A (en)

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Cited By (9)

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CN107894773A (en) * 2017-12-15 2018-04-10 广东工业大学 A kind of air navigation aid of mobile robot, system and relevant apparatus
CN108115727A (en) * 2017-12-19 2018-06-05 北斗七星(重庆)物联网技术有限公司 A kind of method, apparatus and system of security robot patrol
CN108839021A (en) * 2018-06-28 2018-11-20 盐城工学院 A kind of industrial carrying machine people of automatic obstacle-avoiding
CN109525946A (en) * 2018-10-31 2019-03-26 出门问问信息科技有限公司 A kind of safety prompt function method and device
CN109544872A (en) * 2018-12-29 2019-03-29 上海应用技术大学 A kind of safe avoidance detection of manipulator and alarm system and its operating method
CN109795629A (en) * 2019-01-22 2019-05-24 深兰科技(上海)有限公司 A kind of unmanned cargo ship
CN110398972A (en) * 2019-08-08 2019-11-01 上海大学 A kind of autonomous dispatching take-away robot
CN111443692A (en) * 2018-12-27 2020-07-24 北京奇虎科技有限公司 Robot obstacle avoidance processing method, electronic device and computer-readable storage medium
CN116592871A (en) * 2023-04-28 2023-08-15 连云港杰瑞科创园管理有限公司 Unmanned ship multi-source target information fusion method

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107894773A (en) * 2017-12-15 2018-04-10 广东工业大学 A kind of air navigation aid of mobile robot, system and relevant apparatus
CN108115727A (en) * 2017-12-19 2018-06-05 北斗七星(重庆)物联网技术有限公司 A kind of method, apparatus and system of security robot patrol
CN108839021A (en) * 2018-06-28 2018-11-20 盐城工学院 A kind of industrial carrying machine people of automatic obstacle-avoiding
CN109525946A (en) * 2018-10-31 2019-03-26 出门问问信息科技有限公司 A kind of safety prompt function method and device
CN111443692A (en) * 2018-12-27 2020-07-24 北京奇虎科技有限公司 Robot obstacle avoidance processing method, electronic device and computer-readable storage medium
CN111443692B (en) * 2018-12-27 2024-08-02 北京奇虎科技有限公司 Robot obstacle avoidance processing method, electronic equipment and computer readable storage medium
CN109544872A (en) * 2018-12-29 2019-03-29 上海应用技术大学 A kind of safe avoidance detection of manipulator and alarm system and its operating method
CN109795629A (en) * 2019-01-22 2019-05-24 深兰科技(上海)有限公司 A kind of unmanned cargo ship
CN110398972A (en) * 2019-08-08 2019-11-01 上海大学 A kind of autonomous dispatching take-away robot
CN116592871A (en) * 2023-04-28 2023-08-15 连云港杰瑞科创园管理有限公司 Unmanned ship multi-source target information fusion method
CN116592871B (en) * 2023-04-28 2024-04-23 连云港杰瑞科创园管理有限公司 Unmanned ship multi-source target information fusion method

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Application publication date: 20171208