Digital Radio Frequency Memory : The Studies
An article about how digital radio frequency memory and applications of DrFM create harmonics has been conducted. It has been found that while the power level of harmonics created in DRFM can be calculated using Fourier series analysis, quantization process will generate more harmonics than what is measured. This study is significant as it sheds light on how the differences in harmonic levels between frequency channels can create audible artifacts.
A study about digital radio frequency memory (DRFM) technology is being done in order to increase the countermeasure options that our military has. DRFM Technology allows for the acquisition and storage of received threat information. This will help us to be more effective in combating against threats, while also freeing up time to focus on other projects.
A paper about digital radio frequency memory (DRFM) and how it can be used in order to calculate the power level of harmonics generated from sampling and quantization. DrFM is an effective technology for digital audio/video transmission that helps keep songs in sync without them ever getting messed up. By looking at how DRFM can be used to generate levels for harmonics, we can better understand how this technology works and begin to effectively prevent harmonic distortion from happening in our audio transmissions.
A study about DRFM with phase quantization has been conducted and it has been revealed that the relation between the instantaneous bandwidth and sampling is important. This means that if the instantaneous bandwidth is large, then the Sample rate can be reduced because some noise will be present at each frame. It was also found that increasing the bit rate didn't improve the results one bit at a time as it increased the number of bits required to encode a frame.
An inquiry about the design, implementation, and testing of a novel software defined Radio Frequency (RF) system designed for small airborne drone applications has been conducted. This system was created using an inexpensive Field Programmable Gate. The study found that the system surpasses the performance enjoyed by similar systems on the market in terms of forgability and scalability.
An analysis about an all-digital image synthesizer for countering high-resolution imagingradars has been reported. The DIS can synthesize the characteristic echo signature of a pre-selected target so as to effectiveness cancel out its ringing signal.
A review about the development of a novel SAR geometric model for large scene deceptive jamming against different SAR systems has been performed. First, a template deceitful image is transformed into the time domain. Next, a recognition algorithm is used to find the most probable target object in the deceived image. Then, detailed Jamming electronics are used to precisely amplify and fade out encrypted secret messages while avoiding other target objects. This effective deception method has been successfully demonstrated by incorporating SAR system with state-of-the-art cryptography and software acceleration.
A study about an algorithm for large scene deceptive jamming against SAR systems has been undertaken. This study uses the synthetic aperture radar (SAR) geometric model to propose a novel algorithm that is fast and can deceive SAR receivers. The study found that this algorithm can create a template deceptive image which is used to deceive SAR receivers.
A study about a digital image synthesizer that is especially useful in countering high-resolution imaging Radars has been undertaken. This synthesizer has a digital radio and can be used to generate echoes of a pre-selected target. While this method is not easy to use at first, with time it can become quite helpful in mapping out the signature of potential targets.
A journal about a novel linear-FM random radar waveform has been conducted to improve the remaining accuracy and range of a random radars. This study found that the proposed linear-FM random waveform possessed a thumbtack ambiguity function and low cross-correlation, making it more accurate throughout its range.
A paper about the digital radio frequency memory (DRFM) kernel was conducted in order to verify its feasibility for wideband DRFM platforms. DRFM is a data rate communications technology that uses channels in the range of 2.4 to 20 GHz.For wideband DRFM, it is important that the radar equipment remains Operational fully and accurately, while also accommodating future user upgrades or enhancements.Tothis end, simulation studies were performed to validate the implementation of a digitalradiofrequencymemory (DRFM) kernel within an existing radar system. These studies focused on two specific scenarios: 1) a battery operated radar system; and 2) an upgraded high performance central choke (HPC) system. The purpose of this paper is to provide reader with some of the findings from this study as well as some insights into how other Radar Equipment Companies approached and are currently working with DRFM in their systems.
A paper about an anti-jamming device has revealed that it can copy signals multiple times and thus form deceptive multiple false targets. This is done through doing a time delay, frequency shift, and/or spatial spread duplexing. By doing so, it can create a more cumbersome victim's experience and make them more difficult to jam.
An analysis about a digital image synthesizer (DIS) for countering high-resolution imaging radars was done. The DIS has a digital radio which can be used to synthesize the echo signature of a pre-selected target. This synthesis allows the enemy to identify and illuminate the target with greater ease.