The air-to-surface pulse Doppler radar can see through cloud cover and detect and track the movement of everything from a military convoy to a busload of tourists to a single rental car.
22.
Compared with similar data from radiosondes, the satellite data has the advantage of global coverage, however at a lower accuracy and resolution . pulse Doppler weather radar is used then wind speed and direction can be determined.
23.
The system includes a S-band Pulse Doppler radar ( 20 km ), Ku-band TWT tracking radar ( 30 km ), Thermal camera ( 19 km ), Daylight CCD camera ( 15 km ), and an IR localiser.
24.
Areas outside the blue zones are blind ranges and blind velocities, which are filled in using multiple PRF and frequency agility . Pulse Doppler radar may have 50 or more pulses between the radar and the reflector.
25.
The major advantages of pulsed Doppler over continuous wave is that distance information is obtained ( the time between the transmitted and received pulses can be converted into a distance with knowledge of the speed of sound ) and gain correction is applied.
26.
Pulse compression ( 7.5 �s pulse ) and pulse Doppler processing ( first blind speed 1000 m / s ) techniques are used and it can acquire ASHM at 18 km and fighter at 30 km with tracking range between 350 m and 30 km.
27.
The J-8C was considered a'radical'upgrade of the original J-8II with a new radar based on the Israeli Elta EL / M 2035 multi-mode pulse Doppler radar, digital fire-control system, a new glass cockpit, in-flight refuelling probe and equipped with a new WP-14 " Kunlun " engine.
28.
The Sea Harrier FA2 featured the Blue Vixen radar, which was described as one of the most advanced pulse doppler radar systems in the world; the Blue Fox radar was seen by some critics as having comparatively low performance for what was available at the time of procurement.
29.
In addition to the main radar, the " Hobart " s will be fitted with a Northrop Grumman AN / SPQ-9B X-band pulse Doppler horizon search radar, a Raytheon Mark 99 fire-control system with two continuous wave illuminating radars for missile direction, and two L-3 Communications SAM Electronics X-band navigation radars.
30.
Mounted on the top of the vehicle was a Thomson-CSF pulse Doppler radar with fixed-echo suppression which rotated at 60 rpm and had a maximum detection range of 18.5 km against low-level targets with speeds of between 35 and 440 m / s and altitude limits between zero and 4, 500 m.
