Positioning Methods

The main application of these systems – integrated provision of vehicles, provision of search for stolen vehicles. Methods for locating radio frequency. The location of the vehicle is determined by measuring the difference between the distances of the transport means of three or more relative positions. This group of methods can be divided into two groups: methods that implement the computation of coordinates on the results of the special reception of radio signals on board rolling stock object (the methods of direct or inverted radio navigation), and methods that are generally called for in this Article means Radiodirection an absolute or relative position of a moving object is determined by reception of radio signals emitted by a network of stationary or mobile receiving stations. Radio direction-finding methods using distributed through a network of finders, or using mobile direction-finding tools possible to track the location of objects, equipped with radio transmitters, beacons. Navigation methods are implemented on the basis of pulse-phase ground-based navigation systems (such as 'Loran-C "-' The Seagull") and medium-satellite navigation systems (SRNS) gps navstar – glonass. The best accuracy and performance now have satellite navigation systems, in which accuracy is achieved Positioning in the standard mode is not worse than 50-100 m, and the use of special methods for processing data signals in phase-detection mode or differential navigation – up to several meters. The advantage of data methods are a global positioning, it can be used on virtually any territories and lines of any length, good accuracy, the ability to determine an object's position on the map areas, the ability to determine not only the coordinates but also the height, speed and direction of motion of an object, a high degree of compatibility with automated information processing systems.

British Cabs

The world famous black cab, black cab – the official taxi in England. That is the London taxi, which from the beginning of the century was the same attribute of London as Big Ben or red double-decker buses. The story begins in … 1639, when Kouchmenov Corporation was established license carting. First, crews were by four – they were called Hackney (hackney – itinerant horse). And in the years 1840-1850 have entered into use more agile two-wheeled open carriage – convertible or in short cab. One hundred years ago, the decline of the era of horse-drawn carriages – on the streets of London left 70 elektrokebov Bersey, travel at a speed of 15 km / h.

However, all elektrokebmeny in the same year went bankrupt, and the last horse in London kebmen surrendered his license until 1947. V1907 was begun Taxi boom, many have begun to develop cars specifically for use as taxicabs. Incidentally, the English today are reluctant to recall that one of most popular London taxi at a quarter-century (until 1932) was a cab Unic, produced … French firm Georges Richard. Now in good old England, there were three firms that built taxi cabs – London Taxi International, Hooper and Asquith, known their replicas. The design of these vehicles remains as conservative as they are not changing for decades appearance. In kebah driver certainly sits behind a partition, bags are placed next to the driver. Still more recently, the taxi had to be necessarily black, which symbolizes the honor and dignity. Today the streets of the capital of the kingdom and beyond are increasingly found a taxi most unbelievable colors, carrying mostly on their bodies, billboards. Taxi