A memorial fund has been set up in memory of Pc David Phillips, who was mown down and killed by a driver in a stolen car.
Merseyside Police Federation chairman Peter Singleton said the "entire police family" was in mourning following the hit-and-run tragedy in Wallasey, Merseyside, on Monday morning.
Mr Singleton said Pc Phillips was "simply doing his job".
The father-of-two had been trying to use a stinger device to stop the runaway Mitsubishi Challenger L200 as it travelled alongside the docks in Wallasey.
The 34-year-old was hit by the pick-up vehicle which had earlier been stolen from Oxton Estates in Birkenhead and was being pursued by police.
The car mounted a central reservation and headed directly for the officer and his colleague.
Mr Singleton said: "We are all devastated by the loss of one of our members, Constable 6554 David Phillips.
"The entire police family is in mourning at his death, and this memorial fund enables people to donate in Dave's memory. He was simply doing his job.
"Dave was unlawfully killed whilst on duty on Monday 5 October 2015. We set up a memorial fund in his honour.
"We send our deepest condolences to Dave's wife Jen, and daughters Abigail and Sophie, as well as other family, colleagues and friends."
You can donate by visiting http://campaign.justgiving.com/charity/mpfct/dave or by texting DAVE01 £10 (or your amount) to 70070 to the Dave Phillips Memorial Fund.
A Home Office post-mortem examination found the officer died from internal injuries suffered in the impact with the vehicle.