inverse problem theory and methods for model parameter estimation - a tarantola

... shall need to examine the different types of parameters that appear in physics and to be able to understand what a total absence of a priori information on a given parameter may mean. Although the ... parameter space. It follows that the results of the measurements of the observable parameters (data), the a priori information on model parameters, and the information on the p...

Ngày tải lên: 31/03/2014, 15:24

... have access to email and the web, it is fairly common for company databases to be inaccurate or incomplete in fields like email address. If email address information is lacking or not up-to-date, ... between alternative research designs and survey methods. In CSM design, there is no standard “one-size fits all” approach. However, we can choose a method well suited to a particul...

Ngày tải lên: 18/10/2013, 12:15

... present and discuss the state-of-the-art in each one of the above categories. We compare and analyze different methods based on technical publications and on commercial product and patent information. ... positioning accuracy, increased accuracy in dead-reckoning allows for less frequent absolute position updates. As a result, fewer landmarks are needed for a given travel di...

Ngày tải lên: 12/12/2013, 21:16

... positioning accuracy depends on the distance and angle between the robot and the landmark. Landmark navigation is rather inaccurate when the robot is further away from the landmark. A higher degree of accuracy ... outputs are provided for re- turned signal amplitude, ambient light, and temperature to facilitate dynamic calibration for optimal accuracy in demanding applica- tions....

Ngày tải lên: 16/12/2013, 14:15

... low-accuracy mechanical rate gyro designed for use in radio-controlled model helicopters and model airplanes. The Futaba FP-G154 costs less than $150 and is avail- able at hobby stores, for example [TOWER]. The ... can randomly change polariza tion states as it propagates through stan- dard single-mode fiber. The use of special polarization-maintaining fiber, such as PRSM Corning,...

Ngày tải lên: 22/12/2013, 20:16

... fixing may not always be possible. Unlike the usually point- shaped beacons, artificial landmarks may be defined as a set of features, e.g., a shape or an area. Additional information, for example ... more landmarks must be “in view” to allow position estimation. Landmark positioning has the advantage that the position errors are bounded, but detection of external 11 landmarks and re...

Ngày tải lên: 22/12/2013, 20:16

Ngày tải lên: 22/12/2013, 21:17

Ngày tải lên: 22/12/2013, 21:17

... at a o fixed elevation angle. A 68HC11 microprocessor automatically compensates for variations in ambient lighting and sensor temperature, and reports range, bearing, and elevation data via an ... landmarks are needed for a given travel distance. 3. Many mapping and landmark matching algorithms (for example: [Gonzalez et al., 1992; Chenavier and Crowley, 1992]) assume tha...

Ngày tải lên: 19/01/2014, 19:20

... data are equivalent to that obtained from a standard black -and- white television camera, except that interference due to ambient light and shadowing effects are eliminated. The reflectance value ... are 500 mA at 12 VDC and 100 mA at 5 VDC. Typical operating parameters are listed in Table 4.12. 11 landmarks and real-time position fixing may not always be possible. Unlike the usually...

Ngày tải lên: 13/02/2014, 09:20