Doppler-Bearing Tracking for Analog TV-based Passive Radars

Passive radar systems can exploit various kinds of signals of opportunity, including analogue television signals. Analogue TV signals are not considered favourable though, because they include relatively strong line sync pulses which prevent the unambiguous measurement of range information via correlation techniques. However, the absence of a...

Development of passive radar systems at TNO

Since 2002, the Netherlands Organisation for Applied Scientific Research – TNO, has been involved in the development of passive radar systems for research purposes. The development has been sponsored partly by the Royal Netherlands Air Force – whose main interest is threat evaluation – and partly by own funds. This paper discusses the...

The Desirability of a NATO-central Database for Non-Cooperative Target Recognition of Aircraft

For a decade, NATO nations, both on their own and within NATO groups have performed studies in the field of Twodimensional Inverse Synthetic Aperture Radar (2D-ISAR) and High Resolution Radar (HRR) Range Profiles. During that work high-quality radar imagery data of aircraft has become available through measurement campaigns. It was shown that...

Application of radon transforms and time-frequency representations to ISAR imagery

The use of ISAR imagery for Automatic Target Recognition is seriously hampered by the difficulty of target motion compensation. Phase perturbations that result from target maneuvers during the processing interval need to be corrected for. In a previous paper, we demonstrated the use of the local Radon transform for estimating the radial velocity...

Maritime target and sea clutter measurements with a coherent Doppler polarimetric surveillance radar

Doppler polarimetry in a surveillance radar for the maritime surface picture is considered. This radar must be able to detect low-RCS targets in littoral environments. Measurements on such targets have been conducted with a coherent polarimetric measurement radar in March 2001 and preliminary results from that campaign are presented. The system...

Doppler Polarimetric Surveillance Radar for the Maritime Surface Picture

Doppler polarimetry in a surveillance radar for the maritime surface picture is considered. This radar must be able to detect low-RCS targets in littoral environments. An overview is given of subjects that are relevant for the system's design, Discussed are: physical phenomena that can be exploited by a coherent polarimetric radar, the effecs of...