In this paper a novel radio-interferometric object trajectory estimation method is proposed, which can be used to track moving objects. The system utilizes a low number of fixed infrastructure nodes equipped with radio transceivers, and the tracked object also carries a simple transceiver. Selected transmitter infrastructure nodes produce interference signals at the fixed infrastructure receive...

Radio Frequency Identification (RFID) is a technology that uses radio signals for object identification. Since the invention of RFID in the mid 1930’s, the technology has been used to identify aircraft, collect bridge-toll payments, deter theft, and track livestock, among many other applications. Interest in RFID has spiked in recent years with the formation of the Auto-ID Center and visions of...

We search for radio counterparts to two recentlydetected strong X-ray sources associated with highly embedded young stellar objects (SVS4/EC 95 and SVS16). We detect a radio source (S68-2) consistent with the position of EC95. We fail to detect a counterpart for SVS16, and place upper limits on its quiescent radio brightness. For S68-2, we show that the radio source has a falling spectrum, sugg...

Infrared-Faint Radio Sources (IFRS) are objects which are strong at radio wavelengths but undetected in sensitive Spitzer observations at infrared wavelengths. Their nature is uncertain and most have not yet been associated with any known astrophysical object. One possibility is that they are radio pulsars. To test this hypothesis we undertook observations of 16 of these sources with the Parkes...

Recent measurements of the galaxy clustering environments around intermediate-redshift radio sources have suggested a systematic environmental difference between radio galaxies and radio-loud quasars, in contradiction to the predictions of simple unified models for the two classes of object. I show that the apparent difference arises mainly as a result of the properties of low-excitation radio ...

Polarization measurements are presented for 52 radio-loud QSOs and BL Lac objects. For 9 highly polarized (p> 3%) AGN, these are the first published polarization measurements. Of these 9, 7 are highly-polarized QSOs (HPQs), one is a BL Lac object and another is a likely BL Lac object. Polarization variability is confirmed for some of these new and previously known highly-polarized AGN. While 6 ...