This simulation is called the synthetic aperture. Passive sensors can capture information for which there is no way to generate man-made radiation, such as gravity.
Several factors, however, are commonly used to characterize the basic quality of a single sensing system. Elevation-mapping interferometric SAR systems have since become an important remote sensing technology, with a very specific height-mapping mission.
Such waiting for a signal at a certain time, with radar, would be an example of electronic counter-countermeasures ECCMso that a signal jamming aircraft closer to Sensor 3b would be ignored. Systems that align with the weapon or weapon sight and are pointed at the intended target, and send an identification friend or foe IFF signal at it.
Interferometric synthetic aperture radar This technique, first demonstrated in the s from an army airborne system, has evolved considerably. The antenna is oriented toward the west, monitoring the northern Pacific missile test areas. Recorded over time, it can be excellent for tracking changes.
Moving target indicator[ edit ] Moving target indications MTIat first, might seem just an adjunct to imaging radar, allowing the operator to focus on the moving target. Advances in imaging sensor technologies such as synthetic aperture radar SARsynthetic aperture ladar SALand high range resolution HRR radar, offer enhanced target recognition capabilities at long distances.
One open-literature study combined several pieces of radar information: The tracked vehicle, however, might exhibit a signature of not slowing when going off-pavement.
To restate an important difference, basic PCR works with a single radar receiver and conventional display format, from a single reflection. As noted, it is impossible to fill a database only with measured profiles since among other reasons, aircraft from hostile nations will never participate in measurement campaigns.
This research and development effort could lead to clear understanding of fundamental repeater jammer limitations - particularly of the DRFM variety - and of techniques to counter such threats both in existing radar systems,through upgrades, and in future radars.
It can be used for observing long-range missiles, but is also appropriate for theater-level weapons, which may be addressed in regional arms limitation agreements, such as the Missile Technology Control Regime MCTR. The system also offers the possibility of high-resolution imaging.
In order to have a wide database of radar signatures and evaluate the performance, simulated range profiles are used as the recognition database while the test samples comprise data of actual range profiles collected in a measurement campaign.
New software, required by the mortar threat in the Balkans, allows it to duplicate the Q mortar detection range of 18 kilometers, while still detecting longer-range threats.Radar Automatic Target Recognition (ATR) and Non-Cooperative Target Recognition (NCTR) captures material presented by leading international experts at a NATO lecture series and explores both the fundamentals of classification techniques applied to data from a variety of radar modes and selected advanced techniques at the forefront of agronumericus.com: The complex jamming threat to Navy radars, such as the AN/SPY-1 radar family, consists of barrage and modulated noise jammers on the one hand, and analog and digital deceptive jammers on the other.
Driving research into Non-Cooperative Target Recognition (NCTR) is the fratricide problem, which, according to Army Maj. Bill McKean, is that " our weapons can kill at a greater range than we can identify a target as friend or foe.
Another group evaluated the PCR technology in an environment like that of a naval task group Ships have. Jul 16, · Radar offers the potential of non-cooperative target recognition (NCTR).
These techniques, which could work if IFF systems fail, have been especially secret.
No one has yet proposed, however, NCTR that will be effective if a coalition partner is flying the same aircraft type as the enemy, as in Desert Storm. Non-cooperative target recognition is investigated in the frequency domain using measured in-flight aircraft data.
It is found that the frequency domain ta. Abstract. Toyon Research proposes to develop a non-cooperative target recognition (NCTR) module that classifies airborne targets based on high-range-resolution (HRR) radar measurements collected by any number of sensors over time.Download