r&s®ddf0xa digital hf/vhf/uhf search direction finder | 概览 -九游官网下载

• wide frequency range from 0.3 (0.09) mhz to 3000 mhz
• high probability of intercept due to high search df speed
• 10 mhz (-6 db) fft realtime bandwidth
• excellent large-signal characteristics
• high adjacent-channel suppression
• algorithms for correlative interferometer and watson-watt as standard
• automatic squelch setting (switchable)
• direction finding of gsm signals (option)
• optimum system compatibility due to
  • efficient data compression
  • fast ethernet and corba (common object request broker architecture)
• raw data recording (option)
• preclassifier (option)
• wide range of antennas from 0.3 mhz to 3000 mhz for stationary and mobile use

the r&s^®ddf0xa family with its extremely high scan speed is the latest generation of rohde & schwarz scanning direction finders. it consists of pure hf (r&s^®ddf 01a) and vhf/uhf (r&s^®ddf 05a) direction finders as well as the tried-and-tested combined hf/vhf/ uhf direction finders (r&s^®ddf 06a).

the combination of the r&s^®ddf 05a vhf/uhf direction finder and the r&s^®ddf a-wb hf wideband option for direct receiving mode results in an extremely compact hf/vhf/uhf full-range direction finder.

all antennas of the r&s^®addx line plus the antenna interface r&s^®gx060 can be used.

the acronym ddf in the type designation r&s^®ddf0xa stands for digital direction finder, indicating that bearings are determined digitally, i.e. the complex antenna voltages are measured by a high-quality three-channel df receiver that acts like a vector analyzer and are subsequently digitized. the bearings of all individual signals are evaluated in parallel and independently using mathematical algorithms. both classic direction finding methods such as watson- watt and the modern correlative interferometer can be used.

the watson-watt method is preferably used in the hf range in cases where only limited space is available for setting up a df antenna (e.g. on ships). moreover, it enables maximum scanning speed.

• automatic df and location systems with high probability of intercept
• interception and direction finding of frequency hopping and burst signals with automatic evaluation methods
• internal data reduction, which limits the results to the truly interesting targets (direction-selective search) and ensures optimal use in automatic interception systems
• segmentation of bearings using the emitter preclassifier r&s® ddf®-cl (option) and delegation of tasks to hand-off receivers
• in the case of correlation-based evaluation in the hf range also determination of elevation; implementation of single station location (ssl) function
• versatile stationary and mobile applications (vehicle, ship, aircraft) by using the most appropriate df algorithms and different antenna configurations, especially those with wide-aperture characteristics