The measures include the installation of concrete roadside barriers to protect tennis fans outside the venue.
The Met Police says the plans will also see firearms officers in and around the grounds and a mobile unit which can "respond to emerging incidents".
Tournament organisers say there has been a "proportional uplift" in measures introduced in past years.
About 7,000 people were queuing outside the All England Club on the first day of the championships.
Wimbledon said the use of the barriers was part of "enhanced measures" this year and would provide "visible physical security".
They have been placed along the route people take as they make their way to and from the tournament as well as in the public queuing zone.
The Met Police said it "continually develops and refines plans for this type of event and planning has been under way throughout the year".
"We have put together a proportionate policing plan with a significant number of resources to support the club to deliver a really safe, secure competition," said Supt Jo Edwards.
"Our plans are based on a number of factors, including the threat level and recent events in London and the UK."
Vehicles were driven at pedestrians on Westminster Bridge in March, on London Bridge in June and near a Finsbury Park mosque later the same month.
Supt Edwards said officers will be working in uniform and plain clothes during the two-week event.
Police also warned the public against pick-pockets and touts selling unauthorised tickets.
Wimbledon has published security advice on its website, saying there would be extensive searches of people, bags and vehicles and urging spectators to allow plenty of time for entry.
The tennis club has continued its ban on spectators bringing in selfie sticks or any "objects or clothing bearing political statements".
Source: Wimbledon

24 June 2015 Last updated at 14:21 BST
But this is a hoverbike - one of the world's first flying motorcycles, that travels in the air at low levels.
It's makers Malloy Aeronautics say it's based on drone technology and has been developed over many years.
It can be flown by a driver or remotely.
The first version was made in 2011 using a 1200cc BMW motorbike engine.
The latest prototype is powered by four bladed fans.
It's still not clear when the first ones will be ready to buy but there's a lot of interest, including from the US Military.
Watch the hoverbike in action.

The original group of 24 met while studying at Central St Martins college of art and design in London and are now more than halfway through the project, which they hope to continue for 24 years. So that will be 24 sets of 24 images, 576 pictures.
Inevitably some of the photographers have moved on and been replaced by new members, but the central ethos continues.
This year, the work has been curated by photographer Jillian Edelstein and is on show in Soho Square, London, until 17 March.
"It was an honour to be asked to curate the exhibition, which consists of surprisingly varied images that are well realised," said Edelstein.
"It's a striking social commentary, from urban decay to beautifully lit landscapes to portrait to elaborate detail in the environment."
You can see more of their work on their website.
Security at Wimbledon is being stepped up after the recent UK terror attacks involving vehicles hitting pedestrians.
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It's billed as having the simplicity of a motorbike and the freedom of a helicopter.
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This month sees the release of the latest set of 24 images from a group of photographers who document the first 24 hours of each year.