Beacon Scheduling Algorithm for Localization of a Mobile Robot
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Beacon
Work space
Electric beacon
Position (finance)
The first navigation devices have become the beacons (NDB Non-directional beacon). This radio station, which transmits in all directions your identification signal at a certain frequency. The receiver on the aircraft simply indicates the direction of such a beacon. To determine the position of the aircraft need not less than 2 beacons. However, the accuracy NDB eventually became insufficient. Then the engineers was established VOR all directional radio beacon.The work covers issues relating to the basic principles of operation of the beacon system VOR. Examines the principles, parameters and structure of the standard VOR.
Beacon
Electric beacon
Radio navigation
SIGNAL (programming language)
Radio signal
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Marine Beacon is an important component of deep sea exploration equipment and an effective means to prevent the detection equipment from being deviated from the point of delivery due to ocean currents and other effects. In order to realize the fast and effective positioning of marine beacons, this paper proposes a new radio location method, which is simplified according to the characteristics of embedded devices. The positioning system involved in the method is divided into two parts: a beacon device transmitting radio signals and a locator device measuring radio signals. The locator device has several antennas, and it will measure the radio signals from the beacon. By measuring the time difference of the signals, the position of beacon can be calculated. The effectiveness of this method has been proved by the principle analysis, simulation results and related experiments.
Beacon
Electric beacon
Radio navigation
Position (finance)
Baseline (sea)
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The article describes radio beacon systems and presents a mathematical solution to determine the location of an unmanned aerial vehicle (UAV) equipped with a direction-finding device. This system ensures continuous flight and allows for determining the exact coordinates of targets, regardless of satellite signals. It facilitates the successful completion of combat missions in adverse weather conditions and when using radio electronic warfare (REW) systems based on signals received from radio beacons.
Beacon
Electric beacon
Homing (biology)
Radio navigation
Radio signal
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This paper describes the construction, functions and operation of the beacon-compatible navigation system, which is sold in Japan under the product name Multi-AV System. This system uses the location information broadcast by the roadside beacons to support a vehicle navigation function. When a vehicle receives the signal transmitted by a beacon, the on-board display unit presents road and traffic information broadcast by the beacon is used to automatically correct the vehicle location found by an independent dead-reckoning system.
Beacon
Electric beacon
Navigation System
Dead reckoning
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Stanford’s Integrity Beacon Landing System uses
ground-based pseudo-satellite transmitters known as
Integrity Beacons to resolve carrier phase ambiguities on
final approach, giving IBLS both high integrity and
centimeter-level accuracy. This paper discusses two
improved Integrity Beacon designs and the results of
flight tests with these new beacons.
The original Integrity Beacons were not synchronized to
GPS time. The IBLS reference station was required to
measure the beacon carrier phase reference information
using a direct cable connection to each Integrity Beacon,
which proved inconvenient in practice. We therefore
constructed a pair of Autonomaus Integrity Beacons,
pseudolites whose transmitted signals are synchronized
to GPS satellite signals using the Omni-Marker principle
invented at Stanford. Flight tests using these beacons
showed that IBLS performance was maintained with the
reference station in a convenient location some six
kilometers from the beacons.
The original Integrity Beacons produced a short-range
“bubble” of usable signals. While this was sufficient to
demonstrate the IBLS concept, a longer-range beacon
would have additional applications. To this end, we
constructed an Autonomous Integrity Beacon with a
range of greater than four kilometers, using a pulsing
scheme similar to that recommended by RTCM-104 to
alleviate the near/far problem. Flight tests showed that
this long-range beacon provided useful information to
IBLS everywhere within its expanded bubble, without
blocking satellite reception by IBLS or conventional
GPS receivers.
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Electric beacon
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In this paper, We mathematically model the In-Range localization scheme in the presence of a Mobile Beacon. In the In-Range localization scheme, a sensor with unknown location is localized to a disc centered at the position of the beacon, if the sensor under consideration can successfully decode a transmission from the beacon. In our approach a Mobile Beacon guided by a mobility model is used to generate the virtual beacons, there by eliminating the need to deploy static beacons that are required in the classical In-Range localization scheme. For analysis, we consider a Mobile Beacon guided by the Random Way Point (RWP) mobility model with In-Range localization scheme. The main contribution of this paper consists of mathematical models for the In-Range localization parameters in the presence of a Mobile Beacon guided by the RWP mobility model.
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Electric beacon
Mobility model
Position (finance)
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Beacon nodes are playing an important role in wireless sensor networks(WSNs) localization,which are used as the reference nodes to calculate the target position.But,the unnoticed changes of locations of some beacons may occur because of various reasons in the actual environment of WSNs applications.So,the moved beacons may become unreliable nodes and at this time if we depend on the moved beacon nodes to locate the unknown node may affect the localization precision,and even lost the use value.A scheme of beacon movement detection based on the available beacon(BAB—BMD) is proposed,aiming at the problem of beacon node movement.This algorithm detects all the beacon nodes and calculates reliability for each beacon which is received by the unknown nodes before the localization.Then select the high reliability of beacon nodes as the reference nodes in the first place for localization which is beacon optimal selection based on the available beacon(BAB—BOS).Experimental results show that BAB— BMD has good detection for beacon movement.At the same time,BAB—BOS also has a better positioning accuracy compared with no detection of beacon movement and discard the moved beacon.
Beacon
Electric beacon
Molecular beacon
Location awareness
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This study proposes a robust range-only beacon mapping method for registering the locations of range-only beacons automatically. The proposed method deals with the multipath propagation of signals from range-only beacons using the range-only measurement association (RoMA) and an unscented Kalman filter (UKF). The RoMA initially predicts the candidate positions of a range-only beacon. The location of the range-only beacon is then updated using the UKF. With the proposed method, the locations of range-only beacons are accurately estimated in a multipath environment. The proposed method also provides the location uncertainty of each range-only beacon. Simulation results using the model for multipath propagation and experimental results in a real indoor environment verify the performance of the proposed method.
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Electric beacon
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This paper proposes a scheme for position estimation of randomly deployed sensor nodes in a wireless sensor network. Without GPS capability on any of the sensors, the position estimation is facilitated by beacons that move within the network. The beacons are equipped with GPS and can broadcast messages that contain the beacon identifiers and their current positions. With erroneous boundary beacon positions captured at the sensor, the sensor calculates its own position iteratively and updates the estimates upon newly acquired beacon positions. Practical implementation issues are discussed and simulation results show that the proposed iterative approach converges quickly even with beacon positions that have large errors.
Beacon
Electric beacon
Position (finance)
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Locating fixed sensing devices with a mobile anchor is attractive for covering larger deployment areas. However, the performance sensitivity to the geometric arrangement of anchor beacon positions remains unexplored. Therefore, localization using new RSSI-based localization algorithm, which uses a volumetric probability distribution function is proposed to find the most likely position of a node by information fusion from several mobile beacon radio packets to reduce error over deterministic approaches. This paper presents the guidelines of beacon selection that leads to design the most suitable trajectory, as a trade-off between the energy costs of travelling and transmitting the beacons versus the localization accuracy.
Beacon
Electric beacon
Position (finance)
Sensor Fusion
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