The various GPS systems in several countries employ satellites that do not use RADAR. The reason is that it's your GPS receiver that determines where you are on earth based on -Radio- signals sent from each visible GPS satellite.
How it works is this . . . the satellites transmit radio signals to earth. Your GPS receiver detects and 'reads' these radio signals. The radio signals send a lot of information, but the most important is the precise time, based on an internal atomic clock in all 32 satellites (24 of which are 'on' at any given moment) (All adjustable from one of several ground stations).
Your GPS receiver, using its own precise time clock (frequently set to match the satellite's time) uses the length of time that the radio signal takes to make it from the satellite(s) to your location. Since the speed of radio waves is precisely known, the GPS receiver uses a very simple formula to calculate the distances from all the satellites that it has 'locked into'.
The GPS receiver picks the 3 best signals to obtain distances from, and comes up with a good location of the receiver. The receiver can show this information on a map, either handheld or in your car, or present you with map coordinates in the form of latitude and longitude - these being useful to surveyors and others. For various technical reasons, readings from a 4th satellite are required, but 5 'locked in' satellites are often the fewest that it is practical to use.
The best GPS receiver setups can determine the accurate location of the receiver (therefore, your position, also) as close as 1 centimeter (length of a sugar cube), up to within several yards. This accuracy largely depends on how many satellites are 'locked in', and how expensive the receiver is. (How many 'extras' it contains to improve accuracy.
Example - I use a GPS receiver with several extras in it, and can get an earth location within 4 inches of the actual location. The cost was about $6,000 for the receiver itself.
A car-mounted Tom-Tom type receiver, on the other hand, only needs to know where you are within several yards, has fewer 'extras' and costs somewhere around $200.
The Satellite IRON or Inter-Range Operating Number is assigned to a satellite upon launch for the purpose of tracking the object via space radars such as TRADEX and ALTAIR on Kwajelin Atoll
The technology is called satellite imaging. Here environmental activities such as flood are monitored using satellite. The information is transmitted to monitoring centers which transfers these warning to man.
Cobra is a company that offers a variety of automobile equipment ranging from gps devices to radars. Cobra gps systems refers to gps systems provided by the company Cobra.
the look at different radars or satellite views and after years of seeing weather they might see a particular weather pattern and know what it will bring
They are used to navigate weather and ships. Their are two different kinds of radars.
There are 155 Doppler radars across the US and around 122 local offices.
Microwave tubes were primarily used in high and ultrahigh frequency applications such as radars, telecommunications equipment, military communication and control systems
Microwaves have lots of uses, some commercial (such as microwave ovens, satellite TV, and weather radar) and some military (such as missile guidance systems), applications in the field of scientific research, microwaves monitor the environmental health of our planet as well as to learn more about the universe. Research scientists use microwaves in two types of systems: active and passive. In active systems, such as radars, scientists send out microwaves and examine what comes back. In passive systems scientists simply look for naturally occurring microwaves and use them to learn more about the objects that emit the waves.
they used to have little mice that would run out on the fields and that would transmit energy to the radars!!! isn't that incredible!!!!!
yes
Ranger
Actually three special purpose vacuum tubes were specifically designed for microwave usage and are in some cases still the least expensive way to work with high power microwave signals.These vacuum tubes are:cavity magnetron (first designed in WW2 for use in military RADARs, still used in some RADAR systems and as the microwave radiation source in all microwave cookers)klystron (still used in satellite communication, medical microwave equipment, and particle accelerators)traveling wave tube (still used in satellite communication, RADAR systems, and the electromagnetic compatibility (EMC) testing industry for immunity testing of electronic devices)