Radar Sub-Systems


Genesis Software designs and manufactures all aspects of our radar systems and as well as supplying complete radar systems, we supply radar items at the sub-systems and components levels.  The main radar sub-systems items that we supply are:

Additionally, we can offer customised solutions to meet special requirements or to address new and emerging applications.

Pulse transmitter systems

PTS TransmitterWe supply pulse transmitter systems operating at fixed frequencies in the MF, HF and VHF frequency bands.  Our principal product is the PTS series modular pulse transmitter system.

The pulse transmitter system is a modular transmitter compromised of one or more pulse transmitter modules (PTMs).  The output power of a PTM is typically specified at a maximum of 7.5 kW, although this may vary depending on other specifications of the transmitter.  Each PTM has a single output port which may be used to directly drive an antenna or antenna group.  Alternatively, optional multi-port power combiners may be used to combine the outputs of multiple PTMs to provide a reduced number of higher power ports.

The pulse transmitter system shown to the left is comprised of four PTM's for a total transmitter power of 30 kW at 5% maximum duty cycle, or 20 kW at 10% maximum duty cycle.

Please refer to the Pulse Transmitter System PTS Series Product Description for further information.

Pulse transceivers

We now have available a highly sophisticated transceiver module that provides a powerful and flexible building block for radars that require programmable beam forming and beam steering capability.  The transceiver is implemented as two independent 2 kW channels in a single module. Each channel has independent phasing on both transmission and reception and the phasing is implemented using direct digital synthesis (DDS) techniques.  A transmit/receive switch and a directional coupler are included in each channel.  The directional coupler allows complex load impedance to be measured under full power on a pulse-to-pulse basis for optimum protection against load faults and for calibrating transmit path phase delays.  A test signal may be injected into the output ports to allow swept VNA measurement of the load to be performed in test mode.  The test signal may also be injected into the receive signal path to calibrate receive path phase delays for accurate beam forming on reception.  The transceiver module includes low noise amplifiers and down-conversion to intermediate frequency (IF).  The entire transceiver module is controlled by an on-board microcontroller which includes very comprehensive monitoring and diagnostics functionality.

Receiving systems

We offer a wide range of receiver systems ranging from single-receiver systems to multi-receiver systems of 16 or more complex channels.  A receiver system generally includes a multi-channel Antenna Interface Unit (AIU) and a multi-channel signal processor system with programmable gain control and filter selection.  The receiver system includes sophisticated test and calibration facilities including the ability to measure the complex impedance of the receive antennas using vector network analyser (VNA) techniques.

Data acquisition systems

Our data acquisition systems are multi-channel expandable systems based on a modular design.  The data acquisition system includes both control and data acquisition.  Comprehensive control is available over such radar characteristics as (multiple) sampling regimes, pulse repetition frequency (PRF), averaging intervals, and comple control sequences.  The data acquisition system also provides accurate GPS-derived time stamps to ensure precise time-stamping of radar data records.

We offer high speed data acquisition with 16-bit digitisation resolution and height sampling intervals to 50 metres.  High-throughput applications include hardware signal averaging to coherently average and reduce digitised data before transfer to the host computer for processing and analysis.

Antenna arrays

We provide antennas and antenna arrays to address MF, HF and VHF applications.  MF antennas are generally half-wave dipoles; HF and VHF antennas may be half-wave dipoles or multi-element yagis depending on the application.  Antenna arrays may range in size from modest arrays comprised of a handful of antennas to large aperture VHF MST-class arrays comprised of hundreds of antennas.

 

Koto Tabang Ionospheric Antenna Array

VHF Ionospheric Radar

Antenna Arrays

MARA Antenna Array

Boundary Layer Troposphere Radar

 

Riometer Antenna Array

Antenna Tuning

Radar upgrades

Our radar systems are designed to be readily upgradable and radar upgrades may include such things as increased transmitter power and the addition of further antennas and receiver channels.

Many aging existing radars may also be economically upgraded to improve reliability and maintainability or to add new capabilities.  For example, we can offer cost-effective replacement of vacumm tube (valve) transmitters with modern solid-state transmitter systems, and provide new data acquisition systems for enhanced performance.