scholarly journals Research on Model Establishment of Environment Evaluation of Arctic Route Navigation

2017 ◽  
Keyword(s):  
Route Navigation

Augmentation Systems

2011 ◽  
pp. 283-293
Author(s):  
Mohammad S. Sharawi
Keyword(s):  
Performance Metrics ◽  
Satellite System ◽  
Space Vehicles ◽  
Gps Receivers ◽  
Commercial Use ◽  
Global Positioning ◽  
Almost All ◽  
Gps System ◽  
Year 2000 ◽  
Route Navigation

The global positioning satellite system (GPS) has been utilized for commercial use after the year 2000. Since then, GPS receivers have been integrated for accurate positing of ground as well as space vehicles. Almost all aircrafts nowadays rely on GPS based system for their take off, landing, and en-route navigation. Relying on GPS alone does note provide the meter level accuracy needed to guarantee safe operation of aircrafts. Thus several augmentation systems have been deployed worldwide to enhance the accuracy of the GPS system. Several augmentation systems that serve local as well as wide coverage areas are discussed in this chapter, specifically the LAAS system, the WAAS system as well as the EGNOS system. The architecture as well the performance metrics for each of these augmentation systems are presented and discussed.

A route navigation system for reducing risk of traffic accidents

2016 ◽  
Author(s):  
Ryo Takeno ◽  
Yosuke Seki ◽  
Masahiko Sano ◽  
Kenji Matsuura ◽  
Kenji Ohira ◽  
...  
Keyword(s):  
Navigation System ◽  
Traffic Accidents ◽  
Route Navigation

Ecologic validity in neuropsychological assessment: Prediction of wayfinding

2001 ◽  
Vol 7 (6) ◽  
pp. 675-682 ◽  
Author(s):  
MARNIE J. NADOLNE ◽  
ANTHONY Y. STRINGER
Keyword(s):  
Sex Education ◽  
Neuropsychological Assessment ◽  
Real World ◽  
Visual Memory ◽  
Specific Criterion ◽  
Directional Orientation ◽  
Good Internal Consistency ◽  
The Right ◽  
Simulation Task ◽  
Route Navigation

This study compared the ability of clinical and ecologic simulation measures to predict performance on environment-specific criterion measures of wayfinding. Thirty-one unilateral stroke participants comprised the right and left hemisphere groups (16 patients with left sided and 15 patients with right sided strokes). Participants completed a battery of clinical tasks (e.g., traditional paper-and-pencil measures of visualization, mental rotation, visual memory and spatial orientation), ecologic simulations (e.g., slide route recall and visualization of a model town from differing perspectives) and environment specific criterion tasks (e.g., route recall and directional orientation). The groups were equivalent in age, sex, education, handedness, and weeks since stroke. Both ecologic simulation tasks were found to have fairly good internal consistency and 1 simulation task was significantly related to real world wayfinding. Of the clinical tasks, 1 visual memory test was correlated with a directional orientation criterion task, but none correlated with route navigation ability. Results are consistent with literature purporting the benefits of ecologic simulation tasks as predictors of real world functioning. (JINS, 2001, 7, 675–682.)

Controlled (h/d) Let-down using Barometric Height and Radar Distance

1949 ◽  
Vol 2 (1) ◽  
pp. 43-48 ◽  
Author(s):  
J. G. Downes
Keyword(s):  
Measuring Equipment ◽  
Air Traffic ◽  
Fundamental Concept ◽  
Basic Method ◽  
Flight Tests ◽  
Smooth Path ◽  
Single Instrument ◽  
Further Development ◽  
Route Navigation ◽  
Distance Measuring

The method described provides glide-paths for climbing and descending aircraft by combining in a single instrument information from the barometric altimeter and radar distance measuring equipment. Preliminary flight tests have shown that the method provides a smooth path along which an aircraft can be flown within close limits, and is one that appears sufficiently promising to justify further development.Height separation has for years been a fundamental concept in the control of air traffic. It is the basic method of preventing collision during en-route navigation and in some holding procedures. The main reason for this is that a suitable instrument already exists in the form of the barometric altimeter, aninstrument which is intrinsically more accurate and reliable than any of the usual navigational aids.

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