Using GPS for Determining Level of Service for major and minor collectors in Lattakia City Center

Lattakia City has faced many negative impacts of the extending crisis that Syria lives, such as defensive arrangements of most governmental facilities, and refuging millions of other Syrian cities citizens. This new situation was reflected on the traffic conditions on most streets and roads of city, especially on center streets. In addition it caused many traffic congestions, which led to investigate and analyze the current situation and finding traffic solutions for reducing these congestions on center streets. In this paper, the “moving observer” concept was used to measure travel time and average speed on major and minor collectors in Lattakia center. The vehicle was equipped with a GPS to collect necessary information, a number of trips was executed during daily peak period and free flow speed; then the data was processed and analyzed to generate max, min, and average speeds, constructing LOS for these streets. Study disclosed low values of LOS for some major collectors in the city, and expressed the need to take urgent arrangements to increase LOS on streets. The efficiency of “moving vehicle” concept was proved in implementing traffic studies.

Study of the possibility of getting elevation deviations by GPS and a specimen of the global earth gravity / EGM2008/

The use of GPS readings has led to a real revolution in Geodesic sciences and their applications. Now, the possibility of replacing the conventional methods used in measuring elevations by using GPS technology which is a good method to get the 3D points providing that the GPS measures the helical elevations. In order to measure the Physically important elevations such as the ortho-metric elevation, there must be an accurate specimen that gives the Geoids of the helix ( Geoids separation ) .In some parts of the world ( as in the case of our study ), there are only universal Ganoids .Those ganoids are calculated as series to reach a certain defined degree. The difference in the elevation ref. surfaces and the surface of the global geoids affects the optimized elevation of the GPS, but if we deal in this paper with the deviations in elevations, there will be no problem . The importance of this paper starts here , as we can get the possibility of taking the deviations in elevations by using The GPS tech that does not exceed /500m/ distance along with improving the results by using EGM2008 model. The results of the deviations in elevation taken by GPS, the Universal Geoids specimen /EGM 2008 / the direct engineering and triangular settlements, will be compared so that we reach some recommendations that increase accuracy in work and save time and efforts.

Algorithms Development for Emitter-location Determination Using Un-directional Antennas

This work discusses the feasibility of applying a small and inexpensive GPS, a Field Strength Meter (FSM) and a personal computer, that can activity and rapidly determine the Geo-locations of RF cooperated emitter, which have a wide range of both military and civilian applications. The emitter’s Geo-coordinates can be estimated by a single moving observation system, which receives signals from the emitter, and measures his Geo-locations and Field Strengths of the transmitted signal at four Positions Analytic Formulas are derived to calculate the location of Emitter, which detected from four Positions by using of Linear Algebra or pseudo range’s solution, The MATLAB was used to solve the four Equations and to simulate the Geo-Positions on Geo-Map.

Integrated Navigation Using IMU/GPS/Vision

This research aims to study and design an integrated navigation system. The designed system depends on fusing data from IMU, GPS and Vision systems. The work pocedure depends on calculating the navigation solution from each system alone; i.e from the inertial sensors and from the cameras, then integrate them to maintain continuity in correcting the navigation solution and the inertial sensors errors.

Traffic Congestion Assessment Based on Speed Index Performance on Arterial Streets in the Commercial Center of Latakia

The high traffic density causes traffic congestion on the road, causing delays before it reaches its destination, in addition to the stress and high psychological impact on the driver, it also results in staff and staff being late for work and students being late for school, With frequent accidents on these busy roads. Congestion has a lot of reasons, one of them is poor infrastructure that leads to a state of congestion, a significant increase in the number of vehicles, a lack of prior information for road users about the traffic situation, Division of traffic management into several departments (Public works, municipality, security, transport…). They become ineffective in some areas, aggressive driving style Which may be an effective factor in creating congestion, in addition to the use of individual transport rather than mass transport. Latakia suffers from a very poor transport system, and the indiscriminate movement of vehicles on its streets. This has been accompanied by increased traffic, which has led to many problems. The most important is the problem of congestion, in terms of increasing the values of delay times in different road sectors. This has contributed to major traffic crises and congestion. It affected service levels on arterial streets in the city's downtown, in the absence of rush-hour studies. Two main streets have been selected in the commercial and downtown center of Latakia City, which is an important arterial street for the distribution of movement. These arterial streets connect the commercial and administrative center of the city with the other parties of the city. The moving controller analyses a large number of actual speeds of the vehicle, measured in each sector, with a view to estimating congestion, calculating its indicators, and determining peak hours. Congestion levels were inferred based on the values of the speed performance index, and the average speeds of daytime and evening peak hours have been mapped to considered street sectors.