Question: Define "Dowding system"?
About the article "Battle of Britain", section "The Dowding System".

Candidate passages:
 Hugh Caswall Tremenheere Dowding, 1st Baron Dowding (1882–1970) Derek Hugh Tremenheere Dowding, 2nd Baron Dowding (1919–1992) Piers Hugh Tremenheere Dowding, 3rd Baron Dowding (b.
1948) Barons Dowding (1943).
The heir presumptive is the present holder's only brother the Honourable Mark Dennis James Dowding (b.
1949)The heir presumptive's heir apparent is his only son Alexander Dowding (b.
1983) 
A statue of Dowding stands outside St Clement Danes church on the Strand, London.
The inscription reads: "Air Chief Marshal Lord Dowding was commander-in-chief of Fighter Command, Royal Air Force, from its formation in 1936 until November 1940.
He was thus responsible for the preparation for and the conduct of the Battle of Britain.
With remarkable foresight, he ensured the equipment of his command with monoplane fighters, the Hurricane and the Spitfire.
He was among the first to appreciate the vital importance of R.D.F.
(radar) and an effective command and control system for his squadrons.
They were ready when war came.
In the preliminary stages of that war, he thoroughly trained his minimal forces and conserved them against strong political pressure to disperse and misuse them.
His wise and prudent judgement and leadership helped to ensure victory against overwhelming odds and thus prevented the loss of the Battle of Britain and probably the whole war.
To him, the people of Britain and of the Free World owe largely the way of life and the liberties they enjoy today."
Other monuments to Dowding can be found in Station Park in Moffat, the town of his birth, and in Calverley Gardens in Tunbridge Wells where he died.
There is a bust of him in the War Memorial Cloister at Winchester College.
The Dowding Centre at the School of Aerospace Battle Management, formally the School of Fighter Control at RAF Boulmer is named after Dowding.
A green ceramic commemorative plaque was unveiled at his former residence (1951–1967) in Darnley Drive, Southborough on 6 May 2012.
Dowding Close, a residential road near the former RAF Hornchurch, is named after Dowding.
Dowding Road, a former residential road for personnel based at RAF Uxbridge is named after Dowding.
Dowding Way, a long stretch of road on the outskirts of Tunbridge Wells, is also named after Lord Dowding.
Dowding House is one of a group of seven blocks of flats constructed by the GLC in Highgate, north London, and known collectively as Hillcrest.
The 1946-built Southern Railway Battle of Britain pacific (4-6-2) locomotive 21C152 was named Lord Dowding in honour of the wartime Air Chief Marshal. 
Like the other groups into which fighter command were divided, no.
13 Group operated the Dowding System of fighter control.
The 13 Group HQ was at Kenton, near Newcastle upon Tyne with the Filter Room at nearby Blakelaw Quarry (not Blakelow, as erroneously mentioned previously).
The sector airfields were: RAF Acklington RAF Dyce RAF Turnhouse RAF Usworth RAF Wick  
The "Cambridge Advanced Learner's Dictionary" and "Webster's Dictionary" both define 'son of a gun' in American English as an euphemism for son of a bitch.
Historian Brian Dowding states that the phrase 'son of a gun' originates from feudal knights' disdain for newly developed firearms.
"Encarta Dictionary" defines the term in a different way as someone "affectionately or kindly regarded.
"The term can also be used as an interjection expressing surprise, mild annoyance or disappointment. 
Dowding then joined the recently created Royal Air Force and gained experience in departments of training, supply, development, and research.
On 19 August 1924, Air Commodore Dowding was made Chief Staff Officer for RAF Iraq Command.
In 1929, he was promoted to Air Vice Marshal and the following year joined the Air Council.
Tragedy struck in the inter-war period when Clarice, his wife of two years, died after a short illness.
Left alone to bring up his son, Derek, Hugh Dowding withdrew from socialising and threw himself into his work.
In 1933 Dowding was promoted to Air Marshal and was knighted.
In the years prior to the Second World War, Dowding was the commanding officer of RAF Fighter Command, and was perhaps the one important person in Britain, and perhaps the world, who did not agree with British Prime Minister Stanley Baldwin's 1932 declaration that "The bomber will always get through".
He conceived and oversaw the development of the ""Dowding System"".
This comprised an integrated air defence system which included (i) radar (whose potential Dowding was among the first to appreciate), (ii) human observers (including the Royal Observer Corps), who filled crucial gaps in what radar was capable of detecting at the time (the early radar systems, for example, did not provide good information on the altitude of incoming German aircraft), (iii) raid plotting, and (iv) radio control of aircraft.
The whole network was tied together, in many cases, by dedicated phone links buried sufficiently deep to provide protection against bombing.
The network had its apex (and Dowding his own headquarters) at RAF Bentley Priory, a converted country house on the outskirts of London.
The system as a whole later became known as Ground-controlled interception (GCI).
Dowding also introduced modern aircraft into service during the pre-war period, including the eight-gun Spitfire and Hurricane.
He is also credited with having fought the Air Ministry so that fighter planes were equipped with bullet proof wind shields.
He was promoted to Air Chief Marshal in 1937.