It is the service of laser pointer in the right place and time

 It is the service of laser pointer in the right place and time.It is for the necessary reference of laser pointer.As a new type of broadband wireless communications technology in recent FSO both flexible features of microwave communication, but also has a large capacity optical fiber communication, hidden, high reliability and advantages of the emerging solutions in the current short-range broadband applications. Near-Earth FSO in terms of capture, alignment and tracking (APT) technology is used to create and to ensure that the key to reliable communication link connected to the near-Earth FSO systems is essential. APT subsystem fine tracking unit, the existing four-quadrant detector (QD)-based positioning methods during the calculation and tracking of the spot center position, the use of a uniform spot model, and the error signal between the spot position The relationship has taken a linear approximation to calculate the error. These are the enterprise operation activities of laser pointer .
External trigger, AD Interrupt Enable; registers: ATD0CTL2; data alignment, sampling sequence length registers: ATD0CTL3; sampling time selection, AD clock selection; registers: ATD0CTL4; sampling channel selection, single / multiple sampling to select bit ; register: ATD0CTL5; PWM module characteristics. It has 8 independent output channels, and can be programmed to control the output waveform cycle. Each output channel has an accurate counter. The PWM output of each channel can be programmed to control. Control System Design (4), based on the intelligent car of the laser detection flip control of the PWM output waveform can be programmed to achieve.
Large channel capacity laser frequency 3-4 orders of magnitude higher than the microwave, as the carrier of the communication means the greater of available frequency bands. Optical communication channel data rates up to 20Gb / s or more, and also using wave division multiplexing the technology used to exponentially increase in communications capacity, as technology advances there will be a substantial increase in the divergence angle of a small low-power laser energy is highly concentrated, high power density on the telescope antenna on the receiver, thus the transmit power of the transmitter can greatly reduce the communication transmitter power is relatively low. this very valuable forum for satellite communications such power resources. light weight transmitter low transmit power and power consumption makes the transmitters and for power system weight can be decreased. The purchase activity of laser pointer matters al lot.