RISC OS Radar: Denbridge Digital's job placementBy Chris Williams. Published: 10th Oct 13:21:17 | Permalink | Printable
Firstly, you may or may not have noticed Denbridge Digital's usenet request for a RISC OS programmer. They are still interviewing, so if you think you've got what it takes- get in contact.
Denbridge are fairly well known, since appearing in AcornUser amongst over things, as marine radar experts. More importantly, Denbridge use RISC OS in their radar systems and hence their programmer request.
Drobe was quite interested, so I caught up with Colin from Denbridge. He explained how modern marine radars tend to push computers to their limits: 'Typical marine radars pull down on the order of 50MB of data per second, but this data is usually wanted somewhere other than the particular site. The radar itself might be on an island, but the control centre on the mainland.'
This data has to be compressed and often prepared to be transfered through mediums like the telephone system. Something a little more effective than !Spark is needed here- transfer rates from 9600 bits/sec to 56kb/sec can be achieved while still maintaining near full fidelity. Once transfered the data is decompressed and displayed in the form of the familiar phosphor-fade, sweep radar display.
'This features measurement tools, tracking, markers, intercept calculation, ETA, T/CPA, and remote control of the radar' Colin tells us.
Initially, as a programmer, it is expected that you will reorganise the structure of the code tree, bring various projects up to date and document system elements. BASIC and assembler coding is required here and the programming involved varies from real time to user interfaces. Colin admits, 'Initially it won't all be interesting, but some should be right from the start. We do difficult and interesting things in very non-standard ways.'
That is something I can believe, in something as critical and so heavily relied upon, marine radar is quite a feat to accomplish. Good luck to all those who apply and all the best to Denbridge.
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