What is the difference between reconnaissance and surveillance?

The major difference between passive surveillance and active surveillance is that passive surveillance relies on pre-existing data or data that is usually reported by public health officers or health care providers to health departments while active surveillance involves proactively collecting data from patients or participants from the general population.

Yes. It has a Hughes Integrated Surveillance & Reconnaissance (HISAR)" sensor system.

The acronym stands for Enhanced Medium Altitude Reconnaissance and Surveillance System. It is a new plane being procured by the Army to provide standoff electro-optic, infrared, and communications intelligence (COMINT) surveillance of the battlefield.

Robert A Vecchiotti has written: 'Training in utilizaton of surveillance and reconnaissance resources by combat arms officers' -- subject(s): Aerial observation (Military science), Military reconnaissance, Military intelligence

In short, observation is noticing or perceiving of an act, instance or detail. This is a passive action. While Surveillance is keeping watch over someone or something and is an active measure.

includes infrared, ultraviolet, and visible light reconnaissance systems excluding radar systems such as bomber-defense equipment, weapon fire control equipment, infrared fuses, infrared detection

In the area of surveillance: Covert surveillance is any hidden equipment or personnel used to watch, observe, or otherwise record people, objects, data, events, or facts. This is in an effort to compile the raw material used to produce intelligence. Overt surveillance is when the subject has been informed of the nature and scope of the surveillance being conducted and/or the surveillance devices are clearly labeled and displayed.

It is an intelligence, surveillance and reconnaissance asset. Usually referenced when dealing with Unmanned Aerial vehicles(UAVS) Since this is in Business accounting and bookkeeping this is probably wrong

You survey land, people, things etc. out in the open. Surveillance would be done under cover or just observing something for a long period of time in the open. Also, a survey is like a poll, a bunch of questions.

covert is in secret, so overt would be out in the open... For example in Surveillance: Covert surveillance is any hidden equipment or personnel used to watch, observe, or otherwise record people, objects, data, events, or facts. This is in an effort to compile the raw material used to produce intelligence. Overt surveillance is when the subject has been informed of the nature and scope of the surveillance being conducted and/or the surveillance devices are…

David W. Irvin has written: 'History of Strategic Drone Operations' 'Reconnaissance is black' -- subject(s): American Aerial reconnaissance, History, Military surveillance, United States, United States. Air Force. Strategic Air Command 'A Boy at War'

Research is usually very purpose-driven and is set to answer a question by doing something hands-on, such as an experiment or a study. I consider surveillance to only be watching. You may still be answering a question, but you yourself would not do any kind of experimenting as a means to answer that question.

Reconnaissance is a noun.

A survey is usually a completely open evaluation of something or a surveying of land to make maps. Surveillance, on the other hand is a secretive watch on a suspected person or people.

Hovering is being around and going around. (The helicopter hovered over the desert) Monitoring is hovering with a hint of surveillance. (The teacher monitored the kids while they were finishing the testing)