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In this paper, we develop a new technique for dual-function radar-communications in a transmit multi-sensor array where information embedding is achieved using phase-rotational invariance. A sequence of Q bits is first mapped into a dictionary of 2Q phase rotations. Then, one pair of transmit orthogonal waveforms is used in tandem with 2Q pairs of transmit beamforming weight vectors for embedding...
In this paper, a novel simplified architecture of inter-channel code division multiplexing (IC-CDM) for radar receiver is presented. This architecture uses multi-phase code to distinguish different channels from the aggregate signal, so that all array elements can share one set of signal processor instead of such a device on each element in the previous technology. In this paper, a computer simulation...
This paper describes a multi-channel S-band radar receive system designed as a laboratory testbed system for studying wideband radar array signal processing. The receive array was designed using a combination of low-cost commercial-of-the-shelf components and a custom-designed surface-mount printed circuit board assembly. It has been tested using LFM-CW waveforms with a center frequency of 2.4 GHz...
Secondary surveillance radar (SSR) was originated in the 40's as an Identification Friend or Foe (IFF) system and, starting from the psila50 and psila60, provided the air traffic control (ATC) with identity and altitude data for the aircraft under coverage, implementing a rough form of cooperative independent surveillance, complementing the non-cooperative surveillance of the primary radar and very...
To check the capabilities of a dasiashared aperturepsila, at FGAN the PALES experimental system is built up. Especially array signal processing with a multibeam system is investigated. In this paper the basics of signal detection by square law detectors are discussed. The proposed signal detection method is based on a time frequency representation. Besides signal detection also the PRF of the received...
A demonstration of multiple-input multiple-output over-the-horizon radar is presented. Transmitter signal beam- forming on a multi-element array has been created, not conventionally before transmission at the transmitter facility, but, after radar signal transmission, skywave propagation, target scattering, return signal propagation, and reception using an over-the-horizon radar receiver. Transmitter...
This paper addresses the issue of space-time adaptive processing (STAP) when the target signal is present in the training data. Target cancellation will occur in the STAP processing when the target signal leaks into the neighbouring range-gates for estimating clutter covariance matrix. In this paper, some linear constraints are added both on target signal and clutter to prevent target signal from...
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