Modern technologies such as MIMO require the need for wide bandwidth, phase coherent, multi-channel analysis. Antenna elements in a MIMO radar system operate independently to cover a wide, often 180-degree, field of view without the need for directivity adjustments. This significantly improves scan times. The MIMO radar employs time, frequency, or coding techniques in each transmit signal to …
Radar applications today, whether found in defense or in aerospace, increasingly require analysis across multiple channels. For AESA antenna, transmitter and receiver module calibration both synchronization and wide bandwidth capture is important and being able to synchronize multiple channels for efficient calibration can be challenging.
Radar DSP and system integrator engineers working in FPGA …
Engineers and researchers whose work involves MIMO, phased array, and beam forming need a signal analysis tool that offers wide bandwidth and multi-channel capability. Oscilloscopes would seem to be a good choice – except many are either not designed to analyze RF signals or are limited to analyzing a single RF channel at a time.
But RF spectral and modulation analysis of multiple channels …
Modern radar signals make use of intra-pulse modulation or modulation on pulse (MOP), such as a linear frequency modulation (LFM), or some form of phase modulation (such as a bi-phase Barker code) to improve range resolution. They also include modulation on pulse to occupy more bandwidth and thus decrease the probability of intercept (POI). Additionally, intra-pulse modulation can include some …
If you are involved in military, aerospace or defense and have been around radar and communication systems, with high-power RF transmitters and high-gain antennas, you are probably aware of the many risks associated with Radio Frequency Radiation (RFR) Hazards. RF emissions from these systems have the potential to cause catastrophic damage to operations and maintenance personnel, ordnance and …
The wireless spectrum is a finite commodity that is tightly regulated, managed and shared by all nations, manufacturers and citizens, who risk being fined if they are caught operating outside of what's regulated or licensed. The presence of interference or other signals of interest creeping into one's band of wireless spectrum is a daily occurrence to some and is of great concern to many who may …
Evaluating and characterizing wideband communications, radar and electronic warfare systems in real time is challenging. Lacking a commercial off-the-shelf (COTS) alternative, some radar test teams stream test data to an inherently non-deterministic computing device such as a PC or laptop, inevitably leading to lost or missing data with no ability to verify that data is being recorded as expected …
In a few short years, the number of drones, or unmanned aerial vehicles (UAVs), purchased has soared. In the US alone, the FAA projects the small model hobbyist UAV fleet will more than double from an estimated 1.1 million vehicles in 2017 to 2.4 million units by 2022. Worldwide, Teal Group’s World Civil UAS Market Profile and Forecast projected in 2018 that non-military UAS production (Commercial …
The RF pulse characteristics of a radar reveal a great deal about a its capability. Electronic Warfare (EW) and Electronic lntelligence (ELINT) experts specialize in the study of these pulsed signals. Pulse characteristics provide valuable information about the type of radar producing a signal and what its source might be; sailboat, battleship, passenger plane, bomber, missile, etc. But how do you …
Radar signals’ qualities make them inherently difficult to recreate with a signal generator. Their combination of carrier frequency, modulation bandwidth, and in most cases, their pulsed nature creates a series of requirements difficult to match with existing instrumentation. The increasing complexity of radar systems, the growing use of complex modulation techniques such as Barker codes, poly …
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