HPx Series Radar Interface Cards (PCI, PCIexpress, PMC form factors)

HPx Series Radar Interface Cards

The HPx Series of Radar Interface Cards from Cambridge Pixel includes the HPx-400, HPx-250, HPx-200, HPx-200e and HPx-200C cards - see table below. These cards can be provided with a low-level board support library for Windows and Linux, or else may be used with the SPx Development library or fully-featured server software for radar network distribution, processing, target tracking and radar recording.

The HPx-400e is a high-performance PCI express dual stream primary radar acquisition card. The card is capable of capturing and processing analogue and digital primary radar video from up to two independent radars. The HPx-400e card supports a number multi-channel input modes, including dual redundancy and fully independent dual-stream capture. This flexibility allows the number of radar input cards to be reduced while retaining system capability.

The HPx-200 is a flexible, cost-effective PCI-based primary radar acquisition card that captures and processes one or two analogue or digital radar video signals from a single radar. When used with the SPx radar processing library it is possible to build radar distribution servers and integrated display solutions rapidly and cost-effectively. Alternatively, if you have your own processing software, HPx-200 is the ideal capture solution.

Model Form-Factor Status
HPx-400e PCI express
x1 lane, full height
HPx-250 PMC Active
HPx-200 PCI
full height, half-length
HPx-200e PCI express
x1 lane, full height
HPx-200C PCI
full height, half-length
(ECDIS applications only)
HPx-200Ce PCI express
x1 lane, full height
(ECDIS applications only)
HPx-180 PCI/PCIe form-factor (no electrical bus interaction) Active
(synchro/resolver to parallel azimuth conversion card)

The HPx-200e provides identical functionality to the HPx-200 in a PCI express (1 lane) form factor.

HPx-250 provides a similar set of capabilities to the HPx-200 and HPx-200e but on the compact PMC form-factor. The PMC board may be fitted to a compact PCI (cPCI), VME or VPX processor card for a rugged embedded solution.

The SPx radar processing library is an extensible toolkit of radar-specific functions that can be linked together to form a processing chain. Using this library, radar video can be processed to remove clutter, interference and enhance gain prior to network distribution and scan-conversion. Custom functions are easily incorporated into the processing chain.

Radar Capture

The HPx cards interface to analogue or digital radar signals, and provides a flexible mixing capability to allow a combination of the inputs to be captured. HPx hardware has been used to interface to many different types of radar, from small marine radars to large air surveillance and from legacy military radars to modern solid state radars, such as the Kelvin Hughes SharpEye™ radar.

The cards can be configured to handle a wide range of signal types, including differential and single ended with signals up to 60V.

The dual analogue input videos are captured at up to 100 MHz (HPx-400e) or 50 MHz (HPx-200/HPx-200e/HPx-250) sample rate using high-precision analogue to digital converters at 12-bits resolution. The captured video can be optionally down-sampled to reduce the data rate before being transferred across the PCI bus using high-speed DMA. On the host computer, the compatible SPx driver for Windows or Linux (other operating systems supported on request) is coupled into the SPx processing library to provide a full complement of radar processing functions.

An on-board FPGA provides data processing and control and offers capability for expanding the data processing functions for customised applications.

Azimuth Input Options

All HPx radar input cards support input of ACP (bearing) and ARP (heading) control signals. 12-bit parallel azimuth RS-422 input is also supported directly on the cards.

Synchro/resolver signals can be accommodated via the use of an HPx-180 companion card. The HPx-180 card accepts the reference and signal outputs from a synchro or resolver and converts them into a parallel azimuth output that can be accepted by an HPx-400e/HPx-200/HPx-200e card. The HPx-180 occupies a PCI/PCIe form factor but makes no electrical contact with the bus connector, so may be fitted into either type of slot.

Versions of the HPx-180 card are available to support synchros and resolvers with 115V reference/90V signals and those with 26V reference/11.8V signals.

SPx Radar Processing

The optional SPx radar processing library (see here) is an extensible toolkit of radar-specific functions that can be linked together to form a processing chain. Using this library, radar video can be processed to remove clutter, interference and enhance gain prior to network distribution or scan-conversion. Custom functions are easily incorporated into the processing chain.

SPx Distribution and Scan Conversion

The captured video may be compressed, distributed or displayed with the optional SPx library software. A complete server application, optionally incorporating radar recording and scenario generation, is built from just a few function calls into the SPx library. For integrated display solutions, the SPx scan-converter is easily connected to the HPx cards driver to provide real-time radar video updates in Windows or Linux/X11.

Puchase Options

The HPx-250/200 cards can be purchased as OEM cards for integration into your projects. A software driver is available that handles all interaction with the card and presents a programming interface (API) in C/C++. The card is supported under Linux and Windows (XP and Vista) as standard. Other operating systems may be supported on request (consult the factory).

You can expand the processing of the captured radar video using the related SPx software programming library. This provides a set of software modules for many common radar processing functions.

If you need to display radar video under Windows, the optional RadarView application software provides a complete application that shows radar video along with map data and overlays.

Software Support

You can use the HPx cards in your system with the SPx driver providing the API. Additional software modules from the SPx library provide the option to further process the video for network distribution. A radar distribution system with optional record to disk is easily constructed by combining pre-existing SPx objects in the form of C++ classes. The compatible software-based radar scan converter classes provide high-performance PPI, B-Scan and A-Scan display either locally or across a network.

view > HPx-400e
Data Sheet
HPx-400e Datasheet
view > HPx-200
Data Sheet
HPx-200 Datasheet
view > HPx-200e
Data Sheet
HPx-200e Datasheet
view > HPx-250
Data Sheet
HPx-250 Datasheet