Post War Planning

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Post war planning - continued

The "Cherry report" was ambitious and forward looking however post war financial considerations meant that it could not be implemented immediately, indeed the report almost represented an ideal specification for a future air defence system, if only the funding was available to implement it. Obviously an interim system was required that would make use of what was currently available until the "Cherry report" could be fully implemented.

Interim Master GCI stations. The interim system proposed in the "Cherry report" was to establish Master GCI stations. The principle GCI station in the Target Production Area would be nominated as the Master GCI, assuming the responsibilities of the Sector Operations Room. The Master GCI would be connected to all the radars in its area, CH, CHL, CHEL and GCI. The GCI stations would be used in both the reporting role and the Control role and all radars would report directly to the Master GCI station (instead of the Filter rooms, as before). Approximately 17 Master GCI stations would be required.

Organisation of a Master GCI station. There were to be two plotting tables at each Master GCI station, one for plotting over the sea, the other for plotting over the land. Plots were to be filtered by Tracking Officers and identified by Identification Officers. Tracks were then to be passed from the plotting table to the Main Display.

The data on the Main Display was then to be broadcast to Group, neighbouring GCI stations, Anti-aircraft Operations Rooms and so on. The data from CH stations was to be included with some reluctance because their relatively inaccurate data made filtering difficult. However their long range and immunity to Window (Chaff) jamming would make up for these deficiencies.

The fourth display at the Master GCI station was to be the Fighter Display, showing fighters and their allocated targets. Two Totalisator Displays (known as Tote Boards) showing data in tabular form would also be provided. One Tote would be associated with the Main Display, the other with the Fighter display.

The proposed final system. In order to introduce the final system envisaged in the "Cherry report" new radar equipment able to operate within specially designed C & R centres would be required. The new radars were to provide at least the existing cover with fewer of them, provide accurate data with respect to the ground (for easier correlation) and were to be free from interference and permanent echoes (Clutter). The data processing and transmission systems were to be capable of automatically displaying each radar's data at distances of up to 100 miles away and assembling, modifying and transmitting a composite picture from all sources up to 1000 miles away. New I.F.F. equipment was also asked for, though not specified. The report also suggested that there should be increased use of interception of radio signals from enemy aircraft for position finding and intelligence purposes.

Most of the information on this page is drawn from "Watching The Skies" - see References for further details on this publication


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ęCopyright 2000 - 2002 Dick Barrett

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