What are the five major reconnaissance and positioning technologies of the US military?

First, use various means to conduct land reconnaissance.

Land reconnaissance is one of the traditional reconnaissance means, which is mainly implemented by armed reconnaissance unit, radio technology reconnaissance unit, spy station, special operations unit, amphibious reconnaissance unit, frontier observation post, radar observation station, frontier intelligence station, remote sensing reconnaissance station, helicopter reconnaissance unit, drone reconnaissance unit and other troops.

The second is maritime reconnaissance that can be used for a long time.

Maritime reconnaissance mainly includes surface ship reconnaissance and submarine reconnaissance. Surface ships are mainly responsible for finding out the positions and trends of enemy ships, submarines and planes. The main reconnaissance methods are radar reconnaissance, sonar reconnaissance and electronic reconnaissance. In addition to ordinary surface ships, some countries have also built electronic reconnaissance ships or sea surveillance ships dedicated to maritime reconnaissance missions.

Third, extensive use of aerial reconnaissance.

Aviation reconnaissance is the most widely used reconnaissance means in the world today. Aviation reconnaissance is divided into aircraft (including unmanned aerial vehicle) reconnaissance and balloon reconnaissance according to the flight platform; According to the nature of the task, it is divided into strategic reconnaissance, campaign reconnaissance and tactical reconnaissance; According to reconnaissance means, it can be divided into photographic reconnaissance, visual reconnaissance and electronic reconnaissance.

Fourth, large coverage space reconnaissance.

Space reconnaissance, also known as space reconnaissance and satellite reconnaissance, has become the main source of military intelligence and an important part of operational command system because of its wide coverage, wide range, fast reconnaissance speed and reliable information.

Five, the magic of radio reconnaissance

Radio technology reconnaissance, also known as signal reconnaissance, is called the "fifth dimension reconnaissance space" except land, sea and air. Radio technology reconnaissance usually realizes the interception and direction finding of radio signals through fixed interception stations and direction finding stations distributed all over the world. According to its working nature and mode, it can be divided into three categories: wired interception, radio interception and radio direction finding.