Radarski i laserski sustavi za detekciju brzine

Volite li voziti brzo? Da li vam se čini da krstarite brzinama iznad postavljenog ograničenja? Ako ste jedan od tih ljudi i lokalni zakoni to dopuštaju, razmislite o kupnji radar detektora i laserskog defuzionog sustava. Ovaj članak razmatra dostupna rješenja te značajke i prednosti svakog od njih.

Što je radarsko otkrivanje brzine?

Agencije za provođenje zakona diljem svijeta koriste radare za mjerenje brzine vozila. Radar je kratica za Radio Detection And Ranging. Radarski detektori rade tako da šalju snop radio valova na vozilo ili objekt koji se mjeri. Ovi radio valovi šalju se na određenu frekvenciju. Kada radiovalovi udare u pokretni objekt, reflektiraju se na drugoj frekvenciji. Ova promjena frekvencije naziva se Dopplerov pomak. Koliko se frekvencija pomiče u odnosu na izvorno odaslanu frekvenciju određuje brzina vozila. Detektor u radarskom pištolju hvata refleksije signala od vozila i analizira njihov frekvencijski sadržaj kako bi izvršio izračun brzine. Radarski pištolj zatim prikazuje brzinu objekta na priloženom zaslonu.

U upotrebi su četiri uobičajena radarska frekvencijska pojasa:X, K, Ka i Ku pojas. X-pojas se kreće od 8 do 12 GHz, a 10,5 GHz je najpopularniji u Sjevernoj Americi. K-pojas se kreće od 18 do 26,5 GHz, a popularno je 24,12 do 24,17 GHz. Ka-pojas se proteže od vrha K-pojasa do 40G Hz. Popularne su frekvencije od 33,8 do 25,7 GHz. Konačno, Ku-pojas ispunjava frekvencije između X i K pojasa, ali se primarno koristi u Europi.

Što je lasersko otkrivanje brzine?

Kada je dostupnost radarskih detektora postala prevladavajuća, agencije za provođenje zakona bile su prisiljene pronaći alternativne načine za hvatanje brzih vozača. Razvijene 1989. godine od strane Laser Technology Inc., laserske puške za detekciju brzine odašilju snop pulsirajućeg svjetla do vozila, a zatim izračunavaju koliko je vremena potrebno da se snop reflektira. Na temelju vremena koje je potrebno, jedinica može izmjeriti udaljenost do vozila gotovo trenutno i s izvrsnom točnošću.

Kako se udaljenost mijenja, laserski pištolj izračunava tu stopu promjene udaljenosti kao brzinu vozila. Za razliku od radarskog sustava, laserska zraka je vrlo uska, često se širi na manje od 3 stope na udaljenosti od 1000 stopa. Ovaj raspon čini laser vrlo preciznim. Zapravo, neki od najnovijih laserskih topova mogu raditi na udaljenostima do 4000 stopa. Tehnički naziv za lasersko detektiranje brzine je Lidar, ali većina ga ljudi naziva laserskim uređajem za mjerenje brzine, ili jednostavnije, laserskim pištoljem – George Lucas bi bio ponosan!

Sustavi radarske detekcije

Iako nije dopušteno u svim državama i pokrajinama, sustav detekcije radara dizajniran je s prijamnikom koji je podešen na frekvencije X, K i Ka. Kada detektira radiofrekvencijsku energiju u tim pojasima, proizvodi upozorenje kako bi upozorio vozača na moguću prisutnost radarskog sustava za detekciju brzine. It is up to the driver to slow down to a legal speed before the officer can get a reading.

There are two popular types of radar detectors:portable windshield mount systems and systems that are installed in a vehicle. The portable units are great for people who travel and may want to use them in their rental cars. These are also a good solution for people with more than one vehicle. Because the system is portable, the radar detection sensor is smaller, and it isn’t as sensitive and doesn’t provide as much warning as an installed system.

Custom-installed radar detection systems typically include dedicated front and rear sensors. These sensors can be mounted behind plastic bumper covers to conceal them without hindering their operation. Many systems are almost invisible in the interior of the vehicle, although clients may opt for a small control panel to speed up changes in settings.

The inclusion of a GPS receiver in some systems allows owners to mark locations where false alarms are prevalent. Radar-controlled door openers and traffic flow detection systems can be a source of interference. Many new cars feature blind-spot monitoring systems and lane departure warning systems that can also cause false alarms.

Combating Laser Speed Detection

Many different systems are available to combat an officer’s attempt to use laser ranging to capture your speed. These systems work by using multiple sensors placed on the front, and often rear, of the vehicle. These sensors detect the pulsed signal from the laser gun, then broadcast a modified and “confused” signal back to the unit. The result is that the laser gun is unable to calculate your vehicle’s speed.

Most retailers and manufacturers will suggest that once your detection system alerts you to the presence of a laser gun, you slow down to a legal speed and let the officer get a speed reading, if for no other reason than to appease their efforts to try to catch you.

When shopping for a laser defuser system, make sure you purchase one that can be upgraded easily. New and improved laser speed detection guns are also being introduced with different technologies to give law enforcement agencies an advantage over speeding drivers. As the companies that manufacture the defusers come up with solutions for each of these new products, Internet-based downloads are made available to update your system.

Installations

A custom-installed radar detection and laser defuser system take some time to complete. Basic systems require several modules to be mounted securely, then all of the wiring must be run neatly and securely through the vehicle back to the main control unit. Complex systems that include GPS, front and rear radar detection, and as many as five laser defusers can take much longer to install. The laser defusers have to be mounted so their transceivers are clearly visible, and they must be horizontal to the ground during operation. Many specialists will create custom brackets to mount these sensors properly while maintaining a clean and tidy overall appearance for the vehicle.

If you are in the market for a radar detector or laser defuser system, contact your local specialist mobile electronics retailer. They would be happy to provide you with all the information you need to make the right purchasing decision, including how much it will cost. As always, we want you to drive your vehicle in a safe and legal manner.